1776 lines
87 KiB
Python
1776 lines
87 KiB
Python
"""Modified from https://github.com/huggingface/diffusers/blob/main/examples/text_to_image/train_text_to_image.py
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"""
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#!/usr/bin/env python
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# coding=utf-8
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# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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import argparse
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import gc
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import logging
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import math
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import os
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import pickle
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import shutil
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import sys
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import accelerate
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import diffusers
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import numpy as np
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import torch
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import torch.nn.functional as F
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import torch.utils.checkpoint
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import transformers
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from accelerate import Accelerator
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from accelerate.logging import get_logger
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from accelerate.state import AcceleratorState
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from accelerate.utils import ProjectConfiguration, set_seed
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from diffusers import AutoencoderKL, DDPMScheduler
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from diffusers.optimization import get_scheduler
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from diffusers.training_utils import EMAModel
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from diffusers.utils import check_min_version, deprecate, is_wandb_available
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from diffusers.utils.import_utils import is_xformers_available
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from diffusers.utils.torch_utils import is_compiled_module
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from einops import rearrange
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from huggingface_hub import create_repo, upload_folder
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from omegaconf import OmegaConf
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from packaging import version
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from PIL import Image
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from torch.utils.data import RandomSampler
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from torch.utils.tensorboard import SummaryWriter
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from torchvision import transforms
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from tqdm.auto import tqdm
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from transformers import (BertModel, BertTokenizer, CLIPImageProcessor,
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CLIPVisionModelWithProjection, MT5Tokenizer,
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T5EncoderModel, T5Tokenizer)
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from transformers.utils import ContextManagers
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import datasets
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current_file_path = os.path.abspath(__file__)
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project_roots = [os.path.dirname(current_file_path), os.path.dirname(os.path.dirname(current_file_path))]
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for project_root in project_roots:
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sys.path.insert(0, project_root) if project_root not in sys.path else None
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from easyanimate.data.bucket_sampler import (ASPECT_RATIO_512,
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ASPECT_RATIO_RANDOM_CROP_512,
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ASPECT_RATIO_RANDOM_CROP_PROB,
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AspectRatioBatchImageSampler,
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AspectRatioBatchImageVideoSampler,
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RandomSampler, get_closest_ratio)
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from easyanimate.data.dataset_image import CC15M
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from easyanimate.data.dataset_image_video import (ImageVideoDataset,
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ImageVideoSampler,
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get_random_mask)
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from easyanimate.models.autoencoder_magvit import AutoencoderKLMagvit
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from easyanimate.models.transformer2d import Transformer2DModel
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from easyanimate.models.transformer3d import (HunyuanTransformer3DModel,
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Transformer3DModel)
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from easyanimate.pipeline.pipeline_easyanimate import EasyAnimatePipeline
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from easyanimate.pipeline.pipeline_easyanimate_inpaint import \
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EasyAnimateInpaintPipeline
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from easyanimate.pipeline.pipeline_easyanimate_multi_text_encoder import (
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get_2d_rotary_pos_embed, get_resize_crop_region_for_grid)
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from easyanimate.pipeline.pipeline_pixart_magvit import \
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PixArtAlphaMagvitPipeline
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from easyanimate.utils import gaussian_diffusion as gd
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from easyanimate.utils.respace import SpacedDiffusion, space_timesteps
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from easyanimate.utils.utils import save_videos_grid
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if is_wandb_available():
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import wandb
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# Will error if the minimal version of diffusers is not installed. Remove at your own risks.
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check_min_version("0.18.0.dev0")
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logger = get_logger(__name__, log_level="INFO")
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def log_validation(vae, text_encoder, tokenizer, transformer3d, config, args, accelerator, weight_dtype, global_step):
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try:
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logger.info("Running validation... ")
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transformer3d_val = Transformer3DModel.from_pretrained_2d(
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args.pretrained_model_name_or_path, subfolder="transformer",
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transformer_additional_kwargs=OmegaConf.to_container(config['transformer_additional_kwargs'])
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).to(weight_dtype)
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transformer3d_val.load_state_dict(accelerator.unwrap_model(transformer3d).state_dict())
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if args.train_mode != "normal":
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clip_image_encoder = CLIPVisionModelWithProjection.from_pretrained(
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args.pretrained_model_name_or_path, subfolder="image_encoder"
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)
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clip_image_processor = CLIPImageProcessor.from_pretrained(
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args.pretrained_model_name_or_path, subfolder="image_encoder"
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)
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pipeline = EasyAnimateInpaintPipeline.from_pretrained(
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args.pretrained_model_name_or_path,
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vae=accelerator.unwrap_model(vae).to(weight_dtype),
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text_encoder=accelerator.unwrap_model(text_encoder),
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tokenizer=tokenizer,
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transformer=transformer3d_val,
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torch_dtype=weight_dtype,
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clip_image_encoder=clip_image_encoder,
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clip_image_processor=clip_image_processor,
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)
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else:
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pipeline = EasyAnimatePipeline.from_pretrained(
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args.pretrained_model_name_or_path,
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vae=accelerator.unwrap_model(vae).to(weight_dtype),
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text_encoder=accelerator.unwrap_model(text_encoder),
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tokenizer=tokenizer,
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transformer=transformer3d_val,
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torch_dtype=weight_dtype
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)
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pipeline = pipeline.to(accelerator.device)
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if args.enable_xformers_memory_efficient_attention:
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pipeline.enable_xformers_memory_efficient_attention()
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if args.seed is None:
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generator = None
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else:
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generator = torch.Generator(device=accelerator.device).manual_seed(args.seed)
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images = []
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for i in range(len(args.validation_prompts)):
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with torch.no_grad():
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if args.train_mode != "normal":
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with torch.autocast("cuda", dtype=weight_dtype):
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video_length = int(args.video_sample_n_frames // vae.mini_batch_encoder * vae.mini_batch_encoder) if args.video_sample_n_frames != 1 else 1
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input_video, input_video_mask, clip_image = get_image_to_video_latent(None, None, video_length=video_length, sample_size=[args.video_sample_size, args.video_sample_size])
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sample = pipeline(
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args.validation_prompts[i],
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video_length = args.video_sample_n_frames,
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negative_prompt = "bad detailed",
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height = args.video_sample_size,
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width = args.video_sample_size,
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guidance_scale = 7,
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generator = generator,
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video = input_video,
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mask_video = input_video_mask,
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clip_image = clip_image,
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).videos
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os.makedirs(os.path.join(args.output_dir, "sample"), exist_ok=True)
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save_videos_grid(sample, os.path.join(args.output_dir, f"sample/sample-{global_step}-{i}.gif"))
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video_length = 1
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input_video, input_video_mask, clip_image = get_image_to_video_latent(None, None, video_length=video_length, sample_size=[args.video_sample_size, args.video_sample_size])
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sample = pipeline(
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args.validation_prompts[i],
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video_length = 1,
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negative_prompt = "bad detailed",
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height = args.video_sample_size,
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width = args.video_sample_size,
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generator = generator,
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video = input_video,
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mask_video = input_video_mask,
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clip_image = clip_image,
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).videos
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os.makedirs(os.path.join(args.output_dir, "sample"), exist_ok=True)
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save_videos_grid(sample, os.path.join(args.output_dir, f"sample/sample-{global_step}-image-{i}.gif"))
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else:
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with torch.autocast("cuda", dtype=weight_dtype):
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sample = pipeline(
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args.validation_prompts[i],
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video_length = args.video_sample_n_frames,
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negative_prompt = "bad detailed",
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height = args.video_sample_size,
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width = args.video_sample_size,
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generator = generator
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).videos
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os.makedirs(os.path.join(args.output_dir, "sample"), exist_ok=True)
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save_videos_grid(sample, os.path.join(args.output_dir, f"sample/sample-{global_step}-{i}.gif"))
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sample = pipeline(
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args.validation_prompts[i],
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video_length = 1,
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negative_prompt = "bad detailed",
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height = args.video_sample_size,
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width = args.video_sample_size,
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generator = generator
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).videos
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os.makedirs(os.path.join(args.output_dir, "sample"), exist_ok=True)
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save_videos_grid(sample, os.path.join(args.output_dir, f"sample/sample-{global_step}-image-{i}.gif"))
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del pipeline
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del transformer3d_val
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if args.train_mode != "normal":
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del clip_image_encoder
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del clip_image_processor
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gc.collect()
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torch.cuda.empty_cache()
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torch.cuda.ipc_collect()
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return images
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except Exception as e:
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gc.collect()
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torch.cuda.empty_cache()
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torch.cuda.ipc_collect()
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print(f"Eval error with info {e}")
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return None
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def linear_decay(initial_value, final_value, total_steps, current_step):
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if current_step >= total_steps:
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return final_value
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current_step = max(0, current_step)
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step_size = (final_value - initial_value) / total_steps
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current_value = initial_value + step_size * current_step
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return current_value
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def generate_timestep_with_lognorm(low, high, shape, device="cpu", generator=None):
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u = torch.normal(mean=0.0, std=1.0, size=shape, device=device, generator=generator)
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t = 1 / (1 + torch.exp(-u)) * (high - low) + low
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return torch.clip(t.to(torch.int32), low, high - 1)
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def parse_args():
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parser = argparse.ArgumentParser(description="Simple example of a training script.")
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parser.add_argument(
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"--input_perturbation", type=float, default=0, help="The scale of input perturbation. Recommended 0.1."
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)
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parser.add_argument(
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"--pretrained_model_name_or_path",
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type=str,
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default=None,
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required=True,
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help="Path to pretrained model or model identifier from huggingface.co/models.",
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)
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parser.add_argument(
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"--revision",
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type=str,
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default=None,
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required=False,
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help="Revision of pretrained model identifier from huggingface.co/models.",
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)
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parser.add_argument(
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"--variant",
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type=str,
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default=None,
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help="Variant of the model files of the pretrained model identifier from huggingface.co/models, 'e.g.' fp16",
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)
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parser.add_argument(
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"--train_data_dir",
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type=str,
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default=None,
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help=(
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"A folder containing the training data. "
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),
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)
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parser.add_argument(
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"--train_data_meta",
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type=str,
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default=None,
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help=(
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"A csv containing the training data. "
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),
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)
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parser.add_argument(
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"--max_train_samples",
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type=int,
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default=None,
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help=(
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"For debugging purposes or quicker training, truncate the number of training examples to this "
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"value if set."
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),
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)
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parser.add_argument(
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"--validation_prompts",
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type=str,
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default=None,
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nargs="+",
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help=("A set of prompts evaluated every `--validation_epochs` and logged to `--report_to`."),
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)
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parser.add_argument(
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"--output_dir",
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type=str,
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default="sd-model-finetuned",
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help="The output directory where the model predictions and checkpoints will be written.",
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)
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parser.add_argument(
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"--cache_dir",
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type=str,
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default=None,
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help="The directory where the downloaded models and datasets will be stored.",
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)
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parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.")
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parser.add_argument(
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"--random_flip",
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action="store_true",
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help="whether to randomly flip images horizontally",
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)
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parser.add_argument(
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"--use_came",
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action="store_true",
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help="whether to use came",
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)
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parser.add_argument(
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"--train_batch_size", type=int, default=16, help="Batch size (per device) for the training dataloader."
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)
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parser.add_argument(
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"--vae_mini_batch", type=int, default=32, help="mini batch size for vae."
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)
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parser.add_argument("--num_train_epochs", type=int, default=100)
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parser.add_argument(
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"--max_train_steps",
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type=int,
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default=None,
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help="Total number of training steps to perform. If provided, overrides num_train_epochs.",
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)
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parser.add_argument(
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"--gradient_accumulation_steps",
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type=int,
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default=1,
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help="Number of updates steps to accumulate before performing a backward/update pass.",
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)
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parser.add_argument(
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"--gradient_checkpointing",
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action="store_true",
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help="Whether or not to use gradient checkpointing to save memory at the expense of slower backward pass.",
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)
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parser.add_argument(
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"--learning_rate",
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type=float,
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default=1e-4,
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help="Initial learning rate (after the potential warmup period) to use.",
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)
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parser.add_argument(
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"--scale_lr",
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action="store_true",
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default=False,
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help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.",
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)
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parser.add_argument(
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"--lr_scheduler",
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type=str,
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default="constant",
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help=(
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'The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",'
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' "constant", "constant_with_warmup"]'
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),
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)
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parser.add_argument(
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"--lr_warmup_steps", type=int, default=500, help="Number of steps for the warmup in the lr scheduler."
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)
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parser.add_argument(
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"--use_8bit_adam", action="store_true", help="Whether or not to use 8-bit Adam from bitsandbytes."
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)
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parser.add_argument(
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"--allow_tf32",
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action="store_true",
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help=(
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"Whether or not to allow TF32 on Ampere GPUs. Can be used to speed up training. For more information, see"
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" https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices"
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),
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)
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parser.add_argument("--use_ema", action="store_true", help="Whether to use EMA model.")
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parser.add_argument(
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"--non_ema_revision",
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type=str,
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default=None,
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required=False,
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help=(
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"Revision of pretrained non-ema model identifier. Must be a branch, tag or git identifier of the local or"
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" remote repository specified with --pretrained_model_name_or_path."
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),
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)
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parser.add_argument(
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"--dataloader_num_workers",
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type=int,
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default=0,
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help=(
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"Number of subprocesses to use for data loading. 0 means that the data will be loaded in the main process."
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),
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)
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parser.add_argument("--adam_beta1", type=float, default=0.9, help="The beta1 parameter for the Adam optimizer.")
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parser.add_argument("--adam_beta2", type=float, default=0.999, help="The beta2 parameter for the Adam optimizer.")
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parser.add_argument("--adam_weight_decay", type=float, default=1e-2, help="Weight decay to use.")
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parser.add_argument("--adam_epsilon", type=float, default=1e-08, help="Epsilon value for the Adam optimizer")
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|
parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
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|
parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.")
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|
parser.add_argument("--hub_token", type=str, default=None, help="The token to use to push to the Model Hub.")
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|
parser.add_argument(
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|
"--prediction_type",
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|
type=str,
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|
default=None,
|
|
help="The prediction_type that shall be used for training. Choose between 'epsilon' or 'v_prediction' or leave `None`. If left to `None` the default prediction type of the scheduler: `noise_scheduler.config.prediciton_type` is chosen.",
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)
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|
parser.add_argument(
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|
"--hub_model_id",
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|
type=str,
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|
default=None,
|
|
help="The name of the repository to keep in sync with the local `output_dir`.",
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|
)
|
|
parser.add_argument(
|
|
"--logging_dir",
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|
type=str,
|
|
default="logs",
|
|
help=(
|
|
"[TensorBoard](https://www.tensorflow.org/tensorboard) log directory. Will default to"
|
|
" *output_dir/runs/**CURRENT_DATETIME_HOSTNAME***."
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|
),
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|
)
|
|
parser.add_argument(
|
|
"--report_model_info", action="store_true", help="Whether or not to report more info about model (such as norm, grad)."
|
|
)
|
|
parser.add_argument(
|
|
"--mixed_precision",
|
|
type=str,
|
|
default=None,
|
|
choices=["no", "fp16", "bf16"],
|
|
help=(
|
|
"Whether to use mixed precision. Choose between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >="
|
|
" 1.10.and an Nvidia Ampere GPU. Default to the value of accelerate config of the current system or the"
|
|
" flag passed with the `accelerate.launch` command. Use this argument to override the accelerate config."
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|
),
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|
)
|
|
parser.add_argument(
|
|
"--report_to",
|
|
type=str,
|
|
default="tensorboard",
|
|
help=(
|
|
'The integration to report the results and logs to. Supported platforms are `"tensorboard"`'
|
|
' (default), `"wandb"` and `"comet_ml"`. Use `"all"` to report to all integrations.'
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|
),
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|
)
|
|
parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
|
|
parser.add_argument(
|
|
"--checkpointing_steps",
|
|
type=int,
|
|
default=500,
|
|
help=(
|
|
"Save a checkpoint of the training state every X updates. These checkpoints are only suitable for resuming"
|
|
" training using `--resume_from_checkpoint`."
|
|
),
|
|
)
|
|
parser.add_argument(
|
|
"--checkpoints_total_limit",
|
|
type=int,
|
|
default=None,
|
|
help=("Max number of checkpoints to store."),
|
|
)
|
|
parser.add_argument(
|
|
"--resume_from_checkpoint",
|
|
type=str,
|
|
default=None,
|
|
help=(
|
|
"Whether training should be resumed from a previous checkpoint. Use a path saved by"
|
|
' `--checkpointing_steps`, or `"latest"` to automatically select the last available checkpoint.'
|
|
),
|
|
)
|
|
parser.add_argument(
|
|
"--enable_xformers_memory_efficient_attention", action="store_true", help="Whether or not to use xformers."
|
|
)
|
|
parser.add_argument("--noise_offset", type=float, default=0, help="The scale of noise offset.")
|
|
parser.add_argument(
|
|
"--validation_epochs",
|
|
type=int,
|
|
default=5,
|
|
help="Run validation every X epochs.",
|
|
)
|
|
parser.add_argument(
|
|
"--validation_steps",
|
|
type=int,
|
|
default=2000,
|
|
help="Run validation every X steps.",
|
|
)
|
|
parser.add_argument(
|
|
"--tracker_project_name",
|
|
type=str,
|
|
default="text2image-fine-tune",
|
|
help=(
|
|
"The `project_name` argument passed to Accelerator.init_trackers for"
|
|
" more information see https://huggingface.co/docs/accelerate/v0.17.0/en/package_reference/accelerator#accelerate.Accelerator"
|
|
),
|
|
)
|
|
|
|
parser.add_argument(
|
|
"--snr_loss", action="store_true", help="Whether or not to use snr_loss."
|
|
)
|
|
parser.add_argument(
|
|
"--not_sigma_loss", action="store_true", help="Whether or not to not use sigma_loss."
|
|
)
|
|
parser.add_argument(
|
|
"--enable_bucket", action="store_true", help="Whether enable bucket sample in datasets."
|
|
)
|
|
parser.add_argument(
|
|
"--random_ratio_crop", action="store_true", help="Whether enable random ratio crop sample in datasets."
|
|
)
|
|
parser.add_argument(
|
|
"--random_frame_crop", action="store_true", help="Whether enable random frame crop sample in datasets."
|
|
)
|
|
parser.add_argument(
|
|
"--train_sampling_steps",
|
|
type=int,
|
|
default=1000,
|
|
help="Run train_sampling_steps.",
|
|
)
|
|
parser.add_argument(
|
|
"--video_sample_size",
|
|
type=int,
|
|
default=512,
|
|
help="Sample size of the video.",
|
|
)
|
|
parser.add_argument(
|
|
"--image_sample_size",
|
|
type=int,
|
|
default=512,
|
|
help="Sample size of the video.",
|
|
)
|
|
parser.add_argument(
|
|
"--video_sample_stride",
|
|
type=int,
|
|
default=4,
|
|
help="Sample stride of the video.",
|
|
)
|
|
parser.add_argument(
|
|
"--video_sample_n_frames",
|
|
type=int,
|
|
default=17,
|
|
help="Num frame of video.",
|
|
)
|
|
parser.add_argument(
|
|
"--video_repeat",
|
|
type=int,
|
|
default=0,
|
|
help="Num of repeat video.",
|
|
)
|
|
parser.add_argument(
|
|
"--config_path",
|
|
type=str,
|
|
default=None,
|
|
help=(
|
|
"The config of the model in training."
|
|
),
|
|
)
|
|
parser.add_argument(
|
|
"--transformer_path",
|
|
type=str,
|
|
default=None,
|
|
help=("If you want to load the weight from other transformers, input its path."),
|
|
)
|
|
parser.add_argument(
|
|
"--vae_path",
|
|
type=str,
|
|
default=None,
|
|
help=("If you want to load the weight from other vaes, input its path."),
|
|
)
|
|
|
|
parser.add_argument(
|
|
'--trainable_modules',
|
|
nargs='+',
|
|
help='Enter a list of trainable modules'
|
|
)
|
|
parser.add_argument(
|
|
'--trainable_modules_low_learning_rate',
|
|
nargs='+',
|
|
default=[],
|
|
help='Enter a list of trainable modules with lower learning rate'
|
|
)
|
|
parser.add_argument(
|
|
'--tokenizer_max_length',
|
|
type=int,
|
|
default=120,
|
|
help='Max length of tokenizer'
|
|
)
|
|
parser.add_argument(
|
|
"--use_deepspeed", action="store_true", help="Whether or not to use deepspeed."
|
|
)
|
|
parser.add_argument(
|
|
"--low_vram", action="store_true", help="Whether enable low_vram mode."
|
|
)
|
|
parser.add_argument(
|
|
"--train_mode",
|
|
type=str,
|
|
default="normal",
|
|
help=(
|
|
'The format of training data. Support `"normal"`'
|
|
' (default), `"inpaint"`.'
|
|
),
|
|
)
|
|
parser.add_argument(
|
|
"--abnormal_norm_clip_start",
|
|
type=int,
|
|
default=1000,
|
|
help=(
|
|
'When do we start doing additional processing on abnormal gradients. '
|
|
),
|
|
)
|
|
parser.add_argument(
|
|
"--initial_grad_norm_ratio",
|
|
type=int,
|
|
default=5,
|
|
help=(
|
|
'The initial gradient is relative to the multiple of the max_grad_norm. '
|
|
),
|
|
)
|
|
|
|
args = parser.parse_args()
|
|
env_local_rank = int(os.environ.get("LOCAL_RANK", -1))
|
|
if env_local_rank != -1 and env_local_rank != args.local_rank:
|
|
args.local_rank = env_local_rank
|
|
|
|
# default to using the same revision for the non-ema model if not specified
|
|
if args.non_ema_revision is None:
|
|
args.non_ema_revision = args.revision
|
|
|
|
return args
|
|
|
|
|
|
def main():
|
|
args = parse_args()
|
|
|
|
if args.report_to == "wandb" and args.hub_token is not None:
|
|
raise ValueError(
|
|
"You cannot use both --report_to=wandb and --hub_token due to a security risk of exposing your token."
|
|
" Please use `huggingface-cli login` to authenticate with the Hub."
|
|
)
|
|
|
|
if args.non_ema_revision is not None:
|
|
deprecate(
|
|
"non_ema_revision!=None",
|
|
"0.15.0",
|
|
message=(
|
|
"Downloading 'non_ema' weights from revision branches of the Hub is deprecated. Please make sure to"
|
|
" use `--variant=non_ema` instead."
|
|
),
|
|
)
|
|
logging_dir = os.path.join(args.output_dir, args.logging_dir)
|
|
|
|
config = OmegaConf.load(args.config_path)
|
|
accelerator_project_config = ProjectConfiguration(project_dir=args.output_dir, logging_dir=logging_dir)
|
|
|
|
accelerator = Accelerator(
|
|
gradient_accumulation_steps=args.gradient_accumulation_steps,
|
|
mixed_precision=args.mixed_precision,
|
|
log_with=args.report_to,
|
|
project_config=accelerator_project_config,
|
|
)
|
|
if accelerator.is_main_process:
|
|
writer = SummaryWriter(log_dir=logging_dir)
|
|
|
|
# Make one log on every process with the configuration for debugging.
|
|
logging.basicConfig(
|
|
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
|
|
datefmt="%m/%d/%Y %H:%M:%S",
|
|
level=logging.INFO,
|
|
)
|
|
logger.info(accelerator.state, main_process_only=False)
|
|
if accelerator.is_local_main_process:
|
|
datasets.utils.logging.set_verbosity_warning()
|
|
transformers.utils.logging.set_verbosity_warning()
|
|
diffusers.utils.logging.set_verbosity_info()
|
|
else:
|
|
datasets.utils.logging.set_verbosity_error()
|
|
transformers.utils.logging.set_verbosity_error()
|
|
diffusers.utils.logging.set_verbosity_error()
|
|
|
|
# If passed along, set the training seed now.
|
|
if args.seed is not None:
|
|
set_seed(args.seed)
|
|
rng = np.random.default_rng(np.random.PCG64(args.seed + 400 + accelerator.process_index))
|
|
torch_rng = torch.Generator(accelerator.device).manual_seed(args.seed + 400 + accelerator.process_index)
|
|
else:
|
|
rng = None
|
|
torch_rng = None
|
|
print(f"Init rng with seed {args.seed + accelerator.process_index}. Process_index is {accelerator.process_index}")
|
|
|
|
# Handle the repository creation
|
|
if accelerator.is_main_process:
|
|
if args.output_dir is not None:
|
|
os.makedirs(args.output_dir, exist_ok=True)
|
|
|
|
# For mixed precision training we cast all non-trainable weigths (vae, non-lora text_encoder and non-lora transformer3d) to half-precision
|
|
# as these weights are only used for inference, keeping weights in full precision is not required.
|
|
weight_dtype = torch.float32
|
|
if accelerator.mixed_precision == "fp16":
|
|
weight_dtype = torch.float16
|
|
args.mixed_precision = accelerator.mixed_precision
|
|
elif accelerator.mixed_precision == "bf16":
|
|
weight_dtype = torch.bfloat16
|
|
args.mixed_precision = accelerator.mixed_precision
|
|
|
|
# Load scheduler, tokenizer and models.
|
|
if args.not_sigma_loss:
|
|
noise_scheduler = DDPMScheduler.from_pretrained(args.pretrained_model_name_or_path, subfolder="scheduler")
|
|
else:
|
|
train_diffusion = SpacedDiffusion(
|
|
use_timesteps=space_timesteps(1000, str(args.train_sampling_steps)), betas=gd.get_named_beta_schedule("linear", 1000),
|
|
model_mean_type=(gd.ModelMeanType.EPSILON), model_var_type=((gd.ModelVarType.LEARNED_RANGE)),
|
|
loss_type=gd.LossType.MSE, snr=args.snr_loss, return_startx=False,
|
|
)
|
|
|
|
if config.get('enable_multi_text_encoder', False):
|
|
tokenizer = BertTokenizer.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="tokenizer", revision=args.revision
|
|
)
|
|
tokenizer_2 = MT5Tokenizer.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="tokenizer_2", revision=args.revision
|
|
)
|
|
else:
|
|
tokenizer = T5Tokenizer.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="tokenizer", revision=args.revision
|
|
)
|
|
|
|
def deepspeed_zero_init_disabled_context_manager():
|
|
"""
|
|
returns either a context list that includes one that will disable zero.Init or an empty context list
|
|
"""
|
|
deepspeed_plugin = AcceleratorState().deepspeed_plugin if accelerate.state.is_initialized() else None
|
|
if deepspeed_plugin is None:
|
|
return []
|
|
|
|
return [deepspeed_plugin.zero3_init_context_manager(enable=False)]
|
|
|
|
|
|
if OmegaConf.to_container(config['vae_kwargs'])['enable_magvit']:
|
|
Choosen_AutoencoderKL = AutoencoderKLMagvit
|
|
else:
|
|
Choosen_AutoencoderKL = AutoencoderKL
|
|
|
|
# Currently Accelerate doesn't know how to handle multiple models under Deepspeed ZeRO stage 3.
|
|
# For this to work properly all models must be run through `accelerate.prepare`. But accelerate
|
|
# will try to assign the same optimizer with the same weights to all models during
|
|
# `deepspeed.initialize`, which of course doesn't work.
|
|
#
|
|
# For now the following workaround will partially support Deepspeed ZeRO-3, by excluding the 2
|
|
# frozen models from being partitioned during `zero.Init` which gets called during
|
|
# `from_pretrained` So CLIPTextModel and AutoencoderKL will not enjoy the parameter sharding
|
|
# across multiple gpus and only UNet2DConditionModel will get ZeRO sharded.
|
|
with ContextManagers(deepspeed_zero_init_disabled_context_manager()):
|
|
if config.get('enable_multi_text_encoder', False):
|
|
text_encoder = BertModel.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="text_encoder", revision=args.revision, variant=args.variant,
|
|
torch_dtype=weight_dtype
|
|
)
|
|
text_encoder_2 = T5EncoderModel.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="text_encoder_2", revision=args.revision, variant=args.variant,
|
|
torch_dtype=weight_dtype
|
|
)
|
|
else:
|
|
text_encoder = T5EncoderModel.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="text_encoder", revision=args.revision, variant=args.variant,
|
|
torch_dtype=weight_dtype
|
|
)
|
|
|
|
vae = Choosen_AutoencoderKL.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="vae", revision=args.revision, variant=args.variant,
|
|
vae_additional_kwargs=OmegaConf.to_container(config['vae_kwargs'])
|
|
)
|
|
|
|
if config.get('enable_multi_text_encoder', False):
|
|
Choosen_Transformer3DModel = HunyuanTransformer3DModel
|
|
else:
|
|
Choosen_Transformer3DModel = Transformer3DModel
|
|
|
|
transformer3d = Choosen_Transformer3DModel.from_pretrained_2d(
|
|
args.pretrained_model_name_or_path, subfolder="transformer",
|
|
transformer_additional_kwargs=OmegaConf.to_container(config['transformer_additional_kwargs'])
|
|
)
|
|
|
|
if args.train_mode != "normal":
|
|
image_encoder = CLIPVisionModelWithProjection.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="image_encoder"
|
|
)
|
|
image_processor = CLIPImageProcessor.from_pretrained(
|
|
args.pretrained_model_name_or_path, subfolder="image_encoder"
|
|
)
|
|
|
|
# Freeze vae and text_encoder and set transformer3d to trainable
|
|
vae.requires_grad_(False)
|
|
text_encoder.requires_grad_(False)
|
|
if config.get('enable_multi_text_encoder', False):
|
|
text_encoder_2.requires_grad_(False)
|
|
transformer3d.requires_grad_(False)
|
|
if args.train_mode != "normal":
|
|
image_encoder.requires_grad_(False)
|
|
|
|
if args.transformer_path is not None:
|
|
print(f"From checkpoint: {args.transformer_path}")
|
|
if args.transformer_path.endswith("safetensors"):
|
|
from safetensors.torch import load_file, safe_open
|
|
state_dict = load_file(args.transformer_path)
|
|
else:
|
|
state_dict = torch.load(args.transformer_path, map_location="cpu")
|
|
state_dict = state_dict["state_dict"] if "state_dict" in state_dict else state_dict
|
|
|
|
m, u = transformer3d.load_state_dict(state_dict, strict=False)
|
|
print(f"missing keys: {len(m)}, unexpected keys: {len(u)}")
|
|
assert len(u) == 0
|
|
|
|
if args.vae_path is not None:
|
|
print(f"From checkpoint: {args.vae_path}")
|
|
if args.vae_path.endswith("safetensors"):
|
|
from safetensors.torch import load_file, safe_open
|
|
state_dict = load_file(args.vae_path)
|
|
else:
|
|
state_dict = torch.load(args.vae_path, map_location="cpu")
|
|
state_dict = state_dict["state_dict"] if "state_dict" in state_dict else state_dict
|
|
|
|
m, u = vae.load_state_dict(state_dict, strict=False)
|
|
print(f"missing keys: {len(m)}, unexpected keys: {len(u)}")
|
|
assert len(u) == 0
|
|
|
|
# A good trainable modules is showed below now.
|
|
# For 3D Patch: trainable_modules = ['ff.net', 'pos_embed', 'attn2', 'proj_out', 'timepositionalencoding', 'h_position', 'w_position']
|
|
# For 2D Patch: trainable_modules = ['ff.net', 'attn2', 'timepositionalencoding', 'h_position', 'w_position']
|
|
transformer3d.train()
|
|
if accelerator.is_main_process:
|
|
accelerator.print(
|
|
f"Trainable modules '{args.trainable_modules}'."
|
|
)
|
|
for name, param in transformer3d.named_parameters():
|
|
for trainable_module_name in args.trainable_modules + args.trainable_modules_low_learning_rate:
|
|
if trainable_module_name in name:
|
|
param.requires_grad = True
|
|
break
|
|
|
|
# Create EMA for the transformer3d.
|
|
if args.use_ema:
|
|
ema_transformer3d = Choosen_Transformer3DModel.from_pretrained_2d(
|
|
args.pretrained_model_name_or_path, subfolder="transformer",
|
|
transformer_additional_kwargs=OmegaConf.to_container(config['transformer_additional_kwargs'])
|
|
)
|
|
ema_transformer3d = EMAModel(ema_transformer3d.parameters(), model_cls=Choosen_Transformer3DModel, model_config=ema_transformer3d.config)
|
|
|
|
if args.enable_xformers_memory_efficient_attention and not config.get('enable_multi_text_encoder', False):
|
|
if is_xformers_available():
|
|
import xformers
|
|
|
|
xformers_version = version.parse(xformers.__version__)
|
|
if xformers_version == version.parse("0.0.16"):
|
|
logger.warn(
|
|
"xFormers 0.0.16 cannot be used for training in some GPUs. If you observe problems during training, please update xFormers to at least 0.0.17. See https://huggingface.co/docs/diffusers/main/en/optimization/xformers for more details."
|
|
)
|
|
transformer3d.enable_xformers_memory_efficient_attention()
|
|
else:
|
|
raise ValueError("xformers is not available. Make sure it is installed correctly")
|
|
|
|
# `accelerate` 0.16.0 will have better support for customized saving
|
|
if version.parse(accelerate.__version__) >= version.parse("0.16.0"):
|
|
# create custom saving & loading hooks so that `accelerator.save_state(...)` serializes in a nice format
|
|
def save_model_hook(models, weights, output_dir):
|
|
if accelerator.is_main_process:
|
|
if args.use_ema:
|
|
ema_transformer3d.save_pretrained(os.path.join(output_dir, "transformer_ema"))
|
|
|
|
models[0].save_pretrained(os.path.join(output_dir, "transformer"))
|
|
if not args.use_deepspeed:
|
|
weights.pop()
|
|
|
|
with open(os.path.join(output_dir, "sampler_pos_start.pkl"), 'wb') as file:
|
|
pickle.dump([batch_sampler.sampler._pos_start, first_epoch], file)
|
|
|
|
def load_model_hook(models, input_dir):
|
|
if args.use_ema:
|
|
ema_path = os.path.join(input_dir, "transformer_ema")
|
|
_, ema_kwargs = Choosen_Transformer3DModel.load_config(ema_path, return_unused_kwargs=True)
|
|
load_model = Choosen_Transformer3DModel.from_pretrained_2d(
|
|
input_dir, subfolder="transformer_ema",
|
|
transformer_additional_kwargs=OmegaConf.to_container(config['transformer_additional_kwargs'])
|
|
)
|
|
load_model = EMAModel(load_model.parameters(), model_cls=Choosen_Transformer3DModel, model_config=load_model.config)
|
|
load_model.load_state_dict(ema_kwargs)
|
|
|
|
ema_transformer3d.load_state_dict(load_model.state_dict())
|
|
ema_transformer3d.to(accelerator.device)
|
|
del load_model
|
|
|
|
for i in range(len(models)):
|
|
# pop models so that they are not loaded again
|
|
model = models.pop()
|
|
|
|
# load diffusers style into model
|
|
load_model = Choosen_Transformer3DModel.from_pretrained_2d(
|
|
input_dir, subfolder="transformer",
|
|
transformer_additional_kwargs=OmegaConf.to_container(config['transformer_additional_kwargs'])
|
|
)
|
|
model.register_to_config(**load_model.config)
|
|
|
|
model.load_state_dict(load_model.state_dict())
|
|
del load_model
|
|
|
|
pkl_path = os.path.join(input_dir, "sampler_pos_start.pkl")
|
|
if os.path.exists(pkl_path):
|
|
with open(pkl_path, 'rb') as file:
|
|
loaded_number, _ = pickle.load(file)
|
|
batch_sampler.sampler._pos_start = max(loaded_number - args.dataloader_num_workers * accelerator.num_processes * 2, 0)
|
|
print(f"Load pkl from {pkl_path}. Get loaded_number = {loaded_number}.")
|
|
|
|
accelerator.register_save_state_pre_hook(save_model_hook)
|
|
accelerator.register_load_state_pre_hook(load_model_hook)
|
|
|
|
if args.gradient_checkpointing:
|
|
transformer3d.enable_gradient_checkpointing()
|
|
|
|
# Enable TF32 for faster training on Ampere GPUs,
|
|
# cf https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices
|
|
if args.allow_tf32:
|
|
torch.backends.cuda.matmul.allow_tf32 = True
|
|
|
|
if args.scale_lr:
|
|
args.learning_rate = (
|
|
args.learning_rate * args.gradient_accumulation_steps * args.train_batch_size * accelerator.num_processes
|
|
)
|
|
|
|
# Initialize the optimizer
|
|
if args.use_8bit_adam:
|
|
try:
|
|
import bitsandbytes as bnb
|
|
except ImportError:
|
|
raise ImportError(
|
|
"Please install bitsandbytes to use 8-bit Adam. You can do so by running `pip install bitsandbytes`"
|
|
)
|
|
|
|
optimizer_cls = bnb.optim.AdamW8bit
|
|
elif args.use_came:
|
|
try:
|
|
from came_pytorch import CAME
|
|
except:
|
|
raise ImportError(
|
|
"Please install came_pytorch to use CAME. You can do so by running `pip install came_pytorch`"
|
|
)
|
|
|
|
optimizer_cls = CAME
|
|
else:
|
|
optimizer_cls = torch.optim.AdamW
|
|
|
|
trainable_params = list(filter(lambda p: p.requires_grad, transformer3d.parameters()))
|
|
trainable_params_optim = [
|
|
{'params': [], 'lr': args.learning_rate},
|
|
{'params': [], 'lr': args.learning_rate / 2},
|
|
]
|
|
for name, param in transformer3d.named_parameters():
|
|
high_lr_flag = False
|
|
for trainable_module_name in args.trainable_modules:
|
|
if trainable_module_name in name:
|
|
high_lr_flag = True
|
|
trainable_params_optim[0]['params'].append(param)
|
|
if accelerator.is_main_process:
|
|
print(f"Set {name} to lr : {args.learning_rate}")
|
|
if high_lr_flag:
|
|
continue
|
|
for trainable_module_name in args.trainable_modules_low_learning_rate:
|
|
if trainable_module_name in name:
|
|
trainable_params_optim[1]['params'].append(param)
|
|
if accelerator.is_main_process:
|
|
print(f"Set {name} to lr : {args.learning_rate / 2}")
|
|
|
|
if args.use_came:
|
|
optimizer = optimizer_cls(
|
|
trainable_params_optim,
|
|
lr=args.learning_rate,
|
|
# weight_decay=args.adam_weight_decay,
|
|
betas=(0.9, 0.999, 0.9999),
|
|
eps=(1e-30, 1e-16)
|
|
)
|
|
else:
|
|
optimizer = optimizer_cls(
|
|
trainable_params_optim,
|
|
lr=args.learning_rate,
|
|
betas=(args.adam_beta1, args.adam_beta2),
|
|
weight_decay=args.adam_weight_decay,
|
|
eps=args.adam_epsilon,
|
|
)
|
|
|
|
# Get the training dataset
|
|
sample_n_frames_bucket_interval = vae.mini_batch_encoder if vae.quant_conv.weight.ndim==5 else 4
|
|
|
|
train_dataset = ImageVideoDataset(
|
|
args.train_data_meta, args.train_data_dir,
|
|
video_sample_size=args.video_sample_size, video_sample_stride=args.video_sample_stride, video_sample_n_frames=args.video_sample_n_frames,
|
|
video_repeat=args.video_repeat,
|
|
image_sample_size=args.image_sample_size,
|
|
enable_bucket=args.enable_bucket, enable_inpaint=True if args.train_mode != "normal" else False,
|
|
)
|
|
|
|
if args.enable_bucket:
|
|
aspect_ratio_sample_size = {key : [x / 512 * args.video_sample_size for x in ASPECT_RATIO_512[key]] for key in ASPECT_RATIO_512.keys()}
|
|
aspect_ratio_random_crop_sample_size = {key : [x / 512 * args.video_sample_size for x in ASPECT_RATIO_RANDOM_CROP_512[key]] for key in ASPECT_RATIO_RANDOM_CROP_512.keys()}
|
|
|
|
batch_sampler_generator = torch.Generator().manual_seed(args.seed)
|
|
batch_sampler = AspectRatioBatchImageVideoSampler(
|
|
sampler=RandomSampler(train_dataset, generator=batch_sampler_generator), dataset=train_dataset.dataset,
|
|
batch_size=args.train_batch_size, train_folder = args.train_data_dir, drop_last=True,
|
|
aspect_ratios=aspect_ratio_sample_size,
|
|
)
|
|
def collate_fn(examples):
|
|
# Create new output
|
|
new_examples = {}
|
|
new_examples["pixel_values"] = []
|
|
new_examples["text"] = []
|
|
if args.train_mode != "normal":
|
|
new_examples["mask_pixel_values"] = []
|
|
new_examples["mask"] = []
|
|
new_examples["ref_pixel_values"] = []
|
|
new_examples["clip_pixel_values"] = []
|
|
|
|
# Get ratio
|
|
pixel_value = examples[0]["pixel_values"]
|
|
f, h, w, c = np.shape(pixel_value)
|
|
closest_size, closest_ratio = get_closest_ratio(h, w, ratios=aspect_ratio_sample_size)
|
|
closest_size = [int(x / 16) * 16 for x in closest_size]
|
|
if args.random_ratio_crop:
|
|
if rng is None:
|
|
random_sample_size = aspect_ratio_random_crop_sample_size[
|
|
np.random.choice(list(aspect_ratio_random_crop_sample_size.keys()), p = ASPECT_RATIO_RANDOM_CROP_PROB)
|
|
]
|
|
else:
|
|
random_sample_size = aspect_ratio_random_crop_sample_size[
|
|
rng.choice(list(aspect_ratio_random_crop_sample_size.keys()), p = ASPECT_RATIO_RANDOM_CROP_PROB)
|
|
]
|
|
random_sample_size = [int(x / 16) * 16 for x in random_sample_size]
|
|
|
|
# For!
|
|
batch_video_length = args.video_sample_n_frames + sample_n_frames_bucket_interval
|
|
for example in examples:
|
|
if args.random_ratio_crop:
|
|
# To 0~1
|
|
pixel_values = torch.from_numpy(example["pixel_values"]).permute(0, 3, 1, 2).contiguous()
|
|
pixel_values = pixel_values / 255.
|
|
|
|
# Get adapt hw for resize
|
|
b, c, h, w = pixel_values.size()
|
|
th, tw = random_sample_size
|
|
if th / tw > h / w:
|
|
nh = int(th)
|
|
nw = int(w / h * nh)
|
|
else:
|
|
nw = int(tw)
|
|
nh = int(h / w * nw)
|
|
|
|
transform = transforms.Compose([
|
|
transforms.Resize([nh, nw]),
|
|
transforms.CenterCrop([int(x) for x in random_sample_size]),
|
|
transforms.Normalize(mean=[0.5, 0.5, 0.5], std=[0.5, 0.5, 0.5], inplace=True),
|
|
])
|
|
else:
|
|
closest_size = list(map(lambda x: int(x), closest_size))
|
|
if closest_size[0] / h > closest_size[1] / w:
|
|
resize_size = closest_size[0], int(w * closest_size[0] / h)
|
|
else:
|
|
resize_size = int(h * closest_size[1] / w), closest_size[1]
|
|
|
|
pixel_values = torch.from_numpy(example["pixel_values"]).permute(0, 3, 1, 2).contiguous()
|
|
pixel_values = pixel_values / 255.
|
|
transform = transforms.Compose([
|
|
transforms.Resize(resize_size, interpolation=transforms.InterpolationMode.BILINEAR), # Image.BICUBIC
|
|
transforms.CenterCrop(closest_size),
|
|
transforms.Normalize(mean=[0.5, 0.5, 0.5], std=[0.5, 0.5, 0.5], inplace=True),
|
|
])
|
|
new_examples["pixel_values"].append(transform(pixel_values))
|
|
new_examples["text"].append(example["text"])
|
|
batch_video_length = min(
|
|
batch_video_length,
|
|
len(pixel_values) // sample_n_frames_bucket_interval * sample_n_frames_bucket_interval,
|
|
)
|
|
if batch_video_length == 0:
|
|
batch_video_length = 1
|
|
|
|
if args.train_mode != "normal":
|
|
mask = get_random_mask(new_examples["pixel_values"][-1].size())
|
|
mask_pixel_values = new_examples["pixel_values"][-1] * (1 - mask) + torch.ones_like(new_examples["pixel_values"][-1]) * -1 * mask
|
|
new_examples["mask_pixel_values"].append(mask_pixel_values)
|
|
new_examples["mask"].append(mask)
|
|
|
|
clip_index = np.random.randint(0, len(new_examples["pixel_values"][-1]))
|
|
clip_pixel_values = new_examples["pixel_values"][-1][clip_index].permute(1, 2, 0).contiguous()
|
|
clip_pixel_values = (clip_pixel_values * 0.5 + 0.5) * 255
|
|
new_examples["clip_pixel_values"].append(clip_pixel_values)
|
|
|
|
ref_pixel_values = new_examples["pixel_values"][-1][clip_index].unsqueeze(0)
|
|
if np.random.rand() < 0.50:
|
|
ref_pixel_values = torch.ones_like(ref_pixel_values) * -1
|
|
new_examples["ref_pixel_values"].append(ref_pixel_values)
|
|
|
|
new_examples["pixel_values"] = torch.stack([example[:batch_video_length] for example in new_examples["pixel_values"]])
|
|
if args.train_mode != "normal":
|
|
new_examples["mask_pixel_values"] = torch.stack([example[:batch_video_length] for example in new_examples["mask_pixel_values"]])
|
|
new_examples["mask"] = torch.stack([example[:batch_video_length] for example in new_examples["mask"]])
|
|
new_examples["clip_pixel_values"] = torch.stack([example for example in new_examples["clip_pixel_values"]])
|
|
new_examples["ref_pixel_values"] = torch.stack([example[:batch_video_length] for example in new_examples["ref_pixel_values"]])
|
|
return new_examples
|
|
|
|
# DataLoaders creation:
|
|
train_dataloader = torch.utils.data.DataLoader(
|
|
train_dataset,
|
|
batch_sampler=batch_sampler,
|
|
collate_fn=collate_fn,
|
|
persistent_workers=True if args.dataloader_num_workers != 0 else False,
|
|
num_workers=args.dataloader_num_workers,
|
|
)
|
|
else:
|
|
# DataLoaders creation:
|
|
batch_sampler_generator = torch.Generator().manual_seed(args.seed)
|
|
batch_sampler = ImageVideoSampler(RandomSampler(train_dataset, generator=batch_sampler_generator), train_dataset, args.train_batch_size)
|
|
train_dataloader = torch.utils.data.DataLoader(
|
|
train_dataset,
|
|
batch_sampler=batch_sampler,
|
|
persistent_workers=True if args.dataloader_num_workers != 0 else False,
|
|
num_workers=args.dataloader_num_workers,
|
|
)
|
|
|
|
# Scheduler and math around the number of training steps.
|
|
overrode_max_train_steps = False
|
|
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
|
|
if args.max_train_steps is None:
|
|
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
|
|
overrode_max_train_steps = True
|
|
|
|
lr_scheduler = get_scheduler(
|
|
args.lr_scheduler,
|
|
optimizer=optimizer,
|
|
num_warmup_steps=args.lr_warmup_steps * accelerator.num_processes,
|
|
num_training_steps=args.max_train_steps * accelerator.num_processes,
|
|
)
|
|
|
|
# Prepare everything with our `accelerator`.
|
|
transformer3d, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
|
|
transformer3d, optimizer, train_dataloader, lr_scheduler
|
|
)
|
|
|
|
if args.use_ema:
|
|
ema_transformer3d.to(accelerator.device)
|
|
|
|
# Move text_encode and vae to gpu and cast to weight_dtype
|
|
text_encoder.to(accelerator.device)
|
|
if config.get('enable_multi_text_encoder', False):
|
|
text_encoder_2.to(accelerator.device)
|
|
vae.to(accelerator.device, dtype=weight_dtype)
|
|
if args.train_mode != "normal":
|
|
image_encoder.to(accelerator.device, dtype=weight_dtype)
|
|
|
|
# We need to recalculate our total training steps as the size of the training dataloader may have changed.
|
|
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
|
|
if overrode_max_train_steps:
|
|
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
|
|
# Afterwards we recalculate our number of training epochs
|
|
args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
|
|
|
|
# We need to initialize the trackers we use, and also store our configuration.
|
|
# The trackers initializes automatically on the main process.
|
|
if accelerator.is_main_process:
|
|
tracker_config = dict(vars(args))
|
|
tracker_config.pop("validation_prompts")
|
|
tracker_config.pop("trainable_modules")
|
|
tracker_config.pop("trainable_modules_low_learning_rate")
|
|
accelerator.init_trackers(args.tracker_project_name, tracker_config)
|
|
|
|
# Function for unwrapping if model was compiled with `torch.compile`.
|
|
def unwrap_model(model):
|
|
model = accelerator.unwrap_model(model)
|
|
model = model._orig_mod if is_compiled_module(model) else model
|
|
return model
|
|
|
|
# Train!
|
|
total_batch_size = args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
|
|
|
|
logger.info("***** Running training *****")
|
|
logger.info(f" Num examples = {len(train_dataset)}")
|
|
logger.info(f" Num Epochs = {args.num_train_epochs}")
|
|
logger.info(f" Instantaneous batch size per device = {args.train_batch_size}")
|
|
logger.info(f" Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}")
|
|
logger.info(f" Gradient Accumulation steps = {args.gradient_accumulation_steps}")
|
|
logger.info(f" Total optimization steps = {args.max_train_steps}")
|
|
global_step = 0
|
|
first_epoch = 0
|
|
|
|
# Potentially load in the weights and states from a previous save
|
|
if args.resume_from_checkpoint:
|
|
if args.resume_from_checkpoint != "latest":
|
|
path = os.path.basename(args.resume_from_checkpoint)
|
|
else:
|
|
# Get the most recent checkpoint
|
|
dirs = os.listdir(args.output_dir)
|
|
dirs = [d for d in dirs if d.startswith("checkpoint")]
|
|
dirs = sorted(dirs, key=lambda x: int(x.split("-")[1]))
|
|
path = dirs[-1] if len(dirs) > 0 else None
|
|
|
|
if path is None:
|
|
accelerator.print(
|
|
f"Checkpoint '{args.resume_from_checkpoint}' does not exist. Starting a new training run."
|
|
)
|
|
args.resume_from_checkpoint = None
|
|
initial_global_step = 0
|
|
else:
|
|
global_step = int(path.split("-")[1])
|
|
|
|
initial_global_step = global_step
|
|
|
|
pkl_path = os.path.join(os.path.join(args.output_dir, path), "sampler_pos_start.pkl")
|
|
if os.path.exists(pkl_path):
|
|
with open(pkl_path, 'rb') as file:
|
|
_, first_epoch = pickle.load(file)
|
|
else:
|
|
first_epoch = global_step // num_update_steps_per_epoch
|
|
print(f"Load pkl from {pkl_path}. Get first_epoch = {first_epoch}.")
|
|
|
|
accelerator.print(f"Resuming from checkpoint {path}")
|
|
accelerator.load_state(os.path.join(args.output_dir, path))
|
|
else:
|
|
initial_global_step = 0
|
|
|
|
progress_bar = tqdm(
|
|
range(0, args.max_train_steps),
|
|
initial=initial_global_step,
|
|
desc="Steps",
|
|
# Only show the progress bar once on each machine.
|
|
disable=not accelerator.is_local_main_process,
|
|
)
|
|
|
|
for epoch in range(first_epoch, args.num_train_epochs):
|
|
train_loss = 0.0
|
|
batch_sampler.sampler.generator = torch.Generator().manual_seed(args.seed + epoch)
|
|
for step, batch in enumerate(train_dataloader):
|
|
# Data batch sanity check
|
|
if epoch == first_epoch and step == 0:
|
|
pixel_values, texts = batch['pixel_values'].cpu(), batch['text']
|
|
pixel_values = rearrange(pixel_values, "b f c h w -> b c f h w")
|
|
if pixel_values.ndim==4:
|
|
pixel_values = pixel_values.unsqueeze(2)
|
|
os.makedirs(os.path.join(args.output_dir, "sanity_check"), exist_ok=True)
|
|
for idx, (pixel_value, text) in enumerate(zip(pixel_values, texts)):
|
|
pixel_value = pixel_value[None, ...]
|
|
gif_name = '-'.join(text.replace('/', '').split()[:10]) if not text == '' else f'{global_step}-{idx}'
|
|
save_videos_grid(pixel_value, f"{args.output_dir}/sanity_check/{gif_name[:10]}.gif", rescale=True)
|
|
if args.train_mode != "normal":
|
|
clip_pixel_values, mask_pixel_values, ref_pixel_values, texts = batch['clip_pixel_values'].cpu(), batch['mask_pixel_values'].cpu(), batch['ref_pixel_values'].cpu(), batch['text']
|
|
mask_pixel_values = rearrange(mask_pixel_values, "b f c h w -> b c f h w")
|
|
ref_pixel_values = rearrange(ref_pixel_values, "b f c h w -> b c f h w")
|
|
for idx, (clip_pixel_value, pixel_value, ref_pixel_value, text) in enumerate(zip(clip_pixel_values, mask_pixel_values, ref_pixel_values, texts)):
|
|
pixel_value = pixel_value[None, ...]
|
|
ref_pixel_value = ref_pixel_value[None, ...]
|
|
Image.fromarray(np.uint8(clip_pixel_value)).save(f"{args.output_dir}/sanity_check/clip_{'-'.join(text.replace('/', '').split()[:10]) if not text == '' else f'{global_step}-{idx}'}.png")
|
|
save_videos_grid(pixel_value, f"{args.output_dir}/sanity_check/mask_{'-'.join(text.replace('/', '').split()[:10]) if not text == '' else f'{global_step}-{idx}'}.gif", rescale=True)
|
|
save_videos_grid(ref_pixel_value, f"{args.output_dir}/sanity_check/ref_{'-'.join(text.replace('/', '').split()[:10]) if not text == '' else f'{global_step}-{idx}'}.gif", rescale=True)
|
|
|
|
with accelerator.accumulate(transformer3d):
|
|
# Convert images to latent space
|
|
pixel_values = batch["pixel_values"].to(weight_dtype)
|
|
if args.train_mode != "normal":
|
|
clip_pixel_values = batch["clip_pixel_values"]
|
|
ref_pixel_values = batch["ref_pixel_values"].to(weight_dtype)
|
|
mask_pixel_values = batch["mask_pixel_values"].to(weight_dtype)
|
|
mask = batch["mask"].to(weight_dtype)
|
|
|
|
def create_special_list(length):
|
|
if length == 1:
|
|
return [1.0]
|
|
if length >= 2:
|
|
last_element = 0.90
|
|
remaining_sum = 1.0 - last_element
|
|
other_elements_value = remaining_sum / (length - 1)
|
|
special_list = [other_elements_value] * (length - 1) + [last_element]
|
|
return special_list
|
|
|
|
if args.random_frame_crop:
|
|
select_frames = [_tmp for _tmp in list(range(sample_n_frames_bucket_interval, args.video_sample_n_frames + sample_n_frames_bucket_interval, sample_n_frames_bucket_interval))]
|
|
select_frames_prob = np.array(create_special_list(len(select_frames)))
|
|
|
|
if rng is None:
|
|
temp_n_frames = np.random.choice(select_frames, p = select_frames_prob)
|
|
else:
|
|
temp_n_frames = rng.choice(select_frames, p = select_frames_prob)
|
|
pixel_values = pixel_values[:, :temp_n_frames, :, :]
|
|
|
|
if args.train_mode != "normal":
|
|
mask_pixel_values = mask_pixel_values[:, :temp_n_frames, :, :]
|
|
mask = mask[:, :temp_n_frames, :, :]
|
|
|
|
video_length = pixel_values.shape[1]
|
|
|
|
if args.low_vram:
|
|
torch.cuda.empty_cache()
|
|
vae.to(accelerator.device)
|
|
with torch.no_grad():
|
|
if vae.quant_conv.weight.ndim==5:
|
|
# This way is quicker when batch grows up
|
|
if vae.slice_compression_vae:
|
|
pixel_values = rearrange(pixel_values, "b f c h w -> b c f h w")
|
|
bs = args.vae_mini_batch
|
|
new_pixel_values = []
|
|
for i in range(0, pixel_values.shape[0], bs):
|
|
pixel_values_bs = pixel_values[i : i + bs]
|
|
pixel_values_bs = vae.encode(pixel_values_bs)[0]
|
|
pixel_values_bs = pixel_values_bs.sample()
|
|
new_pixel_values.append(pixel_values_bs)
|
|
latents = torch.cat(new_pixel_values, dim = 0)
|
|
else:
|
|
pixel_values = rearrange(pixel_values, "b f c h w -> b c f h w")
|
|
bs = args.vae_mini_batch
|
|
new_pixel_values = []
|
|
for i in range(0, pixel_values.shape[0], bs):
|
|
new_pixel_values_mini_batch = []
|
|
for j in range(0, pixel_values.shape[2], sample_n_frames_bucket_interval):
|
|
pixel_values_bs = pixel_values[i : i + bs, :, j: j + sample_n_frames_bucket_interval, :, :]
|
|
pixel_values_bs = vae.encode(pixel_values_bs)[0]
|
|
pixel_values_bs = pixel_values_bs.sample()
|
|
new_pixel_values_mini_batch.append(pixel_values_bs)
|
|
new_pixel_values_mini_batch = torch.cat(new_pixel_values_mini_batch, dim = 2)
|
|
new_pixel_values.append(new_pixel_values_mini_batch)
|
|
latents = torch.cat(new_pixel_values, dim = 0)
|
|
else:
|
|
# This way is quicker when batch grows up
|
|
pixel_values = rearrange(pixel_values, "b f c h w -> (b f) c h w")
|
|
bs = args.vae_mini_batch
|
|
new_pixel_values = []
|
|
for i in range(0, pixel_values.shape[0], bs):
|
|
pixel_values_bs = pixel_values[i : i + bs]
|
|
pixel_values_bs = vae.encode(pixel_values_bs.to(dtype=weight_dtype)).latent_dist
|
|
pixel_values_bs = pixel_values_bs.sample()
|
|
new_pixel_values.append(pixel_values_bs)
|
|
latents = torch.cat(new_pixel_values, dim = 0)
|
|
latents = rearrange(latents, "(b f) c h w -> b c f h w", f=video_length)
|
|
|
|
latents = latents * vae.config.scaling_factor
|
|
|
|
if args.train_mode != "normal":
|
|
if vae.quant_conv.weight.ndim==5:
|
|
# This way is quicker when batch grows up
|
|
if vae.slice_compression_vae:
|
|
if config.get('enable_multi_text_encoder', False):
|
|
ref_pixel_values = rearrange(ref_pixel_values, "b f c h w -> b c f h w")
|
|
bs = args.vae_mini_batch
|
|
new_ref_pixel_values = []
|
|
for i in range(0, ref_pixel_values.shape[0], bs):
|
|
ref_pixel_values_bs = ref_pixel_values[i : i + bs]
|
|
ref_pixel_values_bs = vae.encode(ref_pixel_values_bs)[0]
|
|
ref_pixel_values_bs = ref_pixel_values_bs.sample()
|
|
new_ref_pixel_values.append(ref_pixel_values_bs)
|
|
ref_latents = torch.cat(new_ref_pixel_values, dim = 0)
|
|
else:
|
|
ref_latents = None
|
|
|
|
mask_pixel_values = rearrange(mask_pixel_values, "b f c h w -> b c f h w")
|
|
bs = args.vae_mini_batch
|
|
new_mask_pixel_values = []
|
|
for i in range(0, mask_pixel_values.shape[0], bs):
|
|
mask_pixel_values_bs = mask_pixel_values[i : i + bs]
|
|
mask_pixel_values_bs = vae.encode(mask_pixel_values_bs)[0]
|
|
mask_pixel_values_bs = mask_pixel_values_bs.sample()
|
|
new_mask_pixel_values.append(mask_pixel_values_bs)
|
|
mask_latents = torch.cat(new_mask_pixel_values, dim = 0)
|
|
|
|
mask = rearrange(mask, "b f c h w -> b c f h w")
|
|
mask = torch.tile(mask, [1, 3, 1, 1, 1])
|
|
bs = args.vae_mini_batch
|
|
new_mask = []
|
|
for i in range(0, mask.shape[0], bs):
|
|
mask_bs = mask[i : i + bs]
|
|
mask_bs = vae.encode(mask_bs)[0]
|
|
mask_bs = mask_bs.sample()
|
|
new_mask.append(mask_bs)
|
|
mask = torch.cat(new_mask, dim = 0)
|
|
if ref_latents is not None:
|
|
ref_latents = ref_latents.expand_as(mask_latents)
|
|
inpaint_latents = torch.concat([mask, mask_latents, ref_latents], dim=1)
|
|
else:
|
|
inpaint_latents = torch.concat([mask, mask_latents], dim=1)
|
|
else:
|
|
if config.get('enable_multi_text_encoder', False):
|
|
# This way is quicker when batch grows up
|
|
ref_pixel_values = rearrange(ref_pixel_values, "b f c h w -> b c f h w")
|
|
bs = args.vae_mini_batch
|
|
new_ref_pixel_values = []
|
|
for i in range(0, ref_pixel_values.shape[0], bs):
|
|
new_ref_pixel_values_mini_batch = []
|
|
for j in range(0, ref_pixel_values.shape[2], sample_n_frames_bucket_interval):
|
|
ref_pixel_values_bs = ref_pixel_values[i : i + bs, :, j: j + sample_n_frames_bucket_interval, :, :]
|
|
ref_pixel_values_bs = vae.encode(ref_pixel_values_bs)[0]
|
|
ref_pixel_values_bs = ref_pixel_values_bs.sample()
|
|
new_ref_pixel_values_mini_batch.append(ref_pixel_values_bs)
|
|
new_ref_pixel_values_mini_batch = torch.cat(new_ref_pixel_values_mini_batch, dim = 2)
|
|
new_ref_pixel_values.append(new_ref_pixel_values_mini_batch)
|
|
ref_latents = torch.cat(new_ref_pixel_values, dim = 0)
|
|
else:
|
|
ref_latents = None
|
|
|
|
# This way is quicker when batch grows up
|
|
mask_pixel_values = rearrange(mask_pixel_values, "b f c h w -> b c f h w")
|
|
bs = args.vae_mini_batch
|
|
new_mask_pixel_values = []
|
|
for i in range(0, mask_pixel_values.shape[0], bs):
|
|
new_mask_pixel_values_mini_batch = []
|
|
for j in range(0, mask_pixel_values.shape[2], sample_n_frames_bucket_interval):
|
|
mask_pixel_values_bs = mask_pixel_values[i : i + bs, :, j: j + sample_n_frames_bucket_interval, :, :]
|
|
mask_pixel_values_bs = vae.encode(mask_pixel_values_bs)[0]
|
|
mask_pixel_values_bs = mask_pixel_values_bs.sample()
|
|
new_mask_pixel_values_mini_batch.append(mask_pixel_values_bs)
|
|
new_mask_pixel_values_mini_batch = torch.cat(new_mask_pixel_values_mini_batch, dim = 2)
|
|
new_mask_pixel_values.append(new_mask_pixel_values_mini_batch)
|
|
mask_latents = torch.cat(new_mask_pixel_values, dim = 0)
|
|
|
|
# This way is quicker when batch grows up
|
|
mask = rearrange(mask, "b f c h w -> b c f h w")
|
|
mask = torch.tile(mask, [1, 3, 1, 1, 1])
|
|
bs = args.vae_mini_batch
|
|
new_mask = []
|
|
for i in range(0, mask.shape[0], bs):
|
|
new_mask_mini_batch = []
|
|
for j in range(0, mask.shape[2], sample_n_frames_bucket_interval):
|
|
mask_bs = mask[i : i + bs, :, j: j + sample_n_frames_bucket_interval, :, :]
|
|
mask_bs = vae.encode(mask_bs)[0]
|
|
mask_bs = mask_bs.sample()
|
|
new_mask_mini_batch.append(mask_bs)
|
|
new_mask_mini_batch = torch.cat(new_mask_mini_batch, dim = 2)
|
|
new_mask.append(new_mask_mini_batch)
|
|
mask = torch.cat(new_mask, dim = 0)
|
|
if ref_latents is not None:
|
|
ref_latents = ref_latents.expand_as(mask_latents)
|
|
inpaint_latents = torch.concat([mask, mask_latents, ref_latents], dim=1)
|
|
else:
|
|
inpaint_latents = torch.concat([mask, mask_latents], dim=1)
|
|
else:
|
|
if config.get('enable_multi_text_encoder', False):
|
|
ref_pixel_values = rearrange(ref_pixel_values, "b f c h w -> (b f) c h w")
|
|
bs = args.vae_mini_batch
|
|
new_ref_pixel_values = []
|
|
for i in range(0, ref_pixel_values.shape[0], bs):
|
|
ref_pixel_values_bs = ref_pixel_values[i : i + bs]
|
|
ref_pixel_values_bs = vae.encode(ref_pixel_values_bs.to(dtype=weight_dtype)).latent_dist
|
|
ref_pixel_values_bs = ref_pixel_values_bs.sample()
|
|
new_ref_pixel_values.append(ref_pixel_values_bs)
|
|
ref_latents = torch.cat(new_ref_pixel_values, dim = 0)
|
|
ref_latents = rearrange(ref_latents, "(b f) c h w -> b c f h w", f=video_length)
|
|
else:
|
|
ref_latents = None
|
|
|
|
mask_pixel_values = rearrange(mask_pixel_values, "b f c h w -> (b f) c h w")
|
|
bs = args.vae_mini_batch
|
|
new_mask_pixel_values = []
|
|
for i in range(0, mask_pixel_values.shape[0], bs):
|
|
mask_pixel_values_bs = mask_pixel_values[i : i + bs]
|
|
mask_pixel_values_bs = vae.encode(mask_pixel_values_bs.to(dtype=weight_dtype)).latent_dist
|
|
mask_pixel_values_bs = mask_pixel_values_bs.sample()
|
|
new_mask_pixel_values.append(mask_pixel_values_bs)
|
|
mask_latents = torch.cat(new_mask_pixel_values, dim = 0)
|
|
mask_latents = rearrange(mask_latents, "(b f) c h w -> b c f h w", f=video_length)
|
|
|
|
mask = rearrange(batch['mask'], "b f c h w -> (b f) c h w")
|
|
mask = torch.nn.functional.interpolate(
|
|
mask, size=(mask_latents.size()[-2], mask_latents.size()[-1])
|
|
)
|
|
mask = rearrange(mask, "(b f) c h w -> b c f h w", f=video_length)
|
|
if ref_latents is not None:
|
|
ref_latents = ref_latents.expand_as(mask_latents)
|
|
inpaint_latents = torch.concat([mask, mask_latents, ref_latents], dim=1)
|
|
else:
|
|
inpaint_latents = torch.concat([mask, mask_latents], dim=1)
|
|
|
|
with torch.no_grad():
|
|
clip_encoder_hidden_states = []
|
|
for clip_pixel_value in clip_pixel_values:
|
|
image = Image.fromarray(np.uint8(clip_pixel_value.cpu().numpy()))
|
|
inputs = image_processor(images=image, return_tensors="pt")
|
|
inputs["pixel_values"] = inputs["pixel_values"].to(accelerator.device, dtype=weight_dtype)
|
|
if config.get('enable_multi_text_encoder', False):
|
|
outputs = image_encoder(**inputs).last_hidden_state[0, 1:]
|
|
else:
|
|
outputs = image_encoder(**inputs).image_embeds[0]
|
|
clip_encoder_hidden_states.append(outputs)
|
|
clip_encoder_hidden_states = torch.stack(clip_encoder_hidden_states)
|
|
bsc = clip_encoder_hidden_states.shape[0]
|
|
|
|
if config.get('enable_multi_text_encoder', False):
|
|
clip_attention_mask = torch.ones([bsc, unwrap_model(transformer3d).n_query]) if np.random.rand() < 0.50 else torch.zeros([bsc, unwrap_model(transformer3d).n_query])
|
|
else:
|
|
clip_attention_mask = torch.ones([bsc, 8]) if np.random.rand() < 0.50 else torch.zeros([bsc, 8])
|
|
clip_attention_mask = clip_attention_mask.to(accelerator.device, dtype=weight_dtype)
|
|
|
|
inpaint_latents = inpaint_latents * vae.config.scaling_factor
|
|
|
|
if args.low_vram:
|
|
vae.to('cpu')
|
|
torch.cuda.empty_cache()
|
|
text_encoder.to(accelerator.device)
|
|
if config.get('enable_multi_text_encoder', False):
|
|
def encode_prompt(
|
|
tokenizer,
|
|
text_encoder,
|
|
prompt: str,
|
|
device: torch.device,
|
|
dtype: torch.dtype,
|
|
max_sequence_length = None,
|
|
text_encoder_index = 0,
|
|
):
|
|
if max_sequence_length is None:
|
|
if text_encoder_index == 0:
|
|
max_length = 77
|
|
if text_encoder_index == 1:
|
|
max_length = 256
|
|
else:
|
|
max_length = max_sequence_length
|
|
|
|
text_inputs = tokenizer(
|
|
prompt,
|
|
padding="max_length",
|
|
max_length=max_length,
|
|
truncation=True,
|
|
return_attention_mask=True,
|
|
return_tensors="pt",
|
|
)
|
|
text_input_ids = text_inputs.input_ids.to(device)
|
|
prompt_attention_mask = text_inputs.attention_mask.to(device)
|
|
|
|
prompt_embeds = text_encoder(
|
|
text_input_ids,
|
|
attention_mask=prompt_attention_mask,
|
|
)[0]
|
|
prompt_embeds = prompt_embeds.to(dtype=dtype, device=device)
|
|
return prompt_embeds, prompt_attention_mask
|
|
|
|
with torch.no_grad():
|
|
prompt_embeds, prompt_attention_mask = \
|
|
encode_prompt(tokenizer, text_encoder, batch['text'], latents.device, dtype=weight_dtype, text_encoder_index=0)
|
|
prompt_embeds_2, prompt_attention_mask_2 = \
|
|
encode_prompt(tokenizer_2, text_encoder_2, batch['text'], latents.device, dtype=weight_dtype, text_encoder_index=1)
|
|
|
|
else:
|
|
with torch.no_grad():
|
|
prompt_ids = tokenizer(
|
|
batch['text'],
|
|
max_length=args.tokenizer_max_length,
|
|
padding="max_length",
|
|
add_special_tokens=True,
|
|
truncation=True,
|
|
return_tensors="pt"
|
|
)
|
|
encoder_hidden_states = text_encoder(
|
|
prompt_ids.input_ids.to(latents.device),
|
|
attention_mask=prompt_ids.attention_mask.to(latents.device),
|
|
return_dict=False
|
|
)[0]
|
|
|
|
if args.low_vram:
|
|
text_encoder.to('cpu')
|
|
torch.cuda.empty_cache()
|
|
|
|
bsz = latents.shape[0]
|
|
noise = torch.randn(latents.size(), device=latents.device, generator=torch_rng)
|
|
# Sample a random timestep for each image
|
|
timesteps = generate_timestep_with_lognorm(0, args.train_sampling_steps, (bsz,), device=latents.device, generator=torch_rng)
|
|
timesteps = timesteps.long()
|
|
|
|
if config.get('enable_multi_text_encoder', False):
|
|
height, width = batch["pixel_values"].size()[-2], batch["pixel_values"].size()[-1]
|
|
|
|
grid_height = height // 8 // accelerator.unwrap_model(transformer3d).config.patch_size
|
|
grid_width = width // 8 // accelerator.unwrap_model(transformer3d).config.patch_size
|
|
base_size = 512 // 8 // accelerator.unwrap_model(transformer3d).config.patch_size
|
|
grid_crops_coords = get_resize_crop_region_for_grid((grid_height, grid_width), base_size)
|
|
image_rotary_emb = get_2d_rotary_pos_embed(
|
|
accelerator.unwrap_model(transformer3d).inner_dim // accelerator.unwrap_model(transformer3d).num_heads, grid_crops_coords, (grid_height, grid_width)
|
|
)
|
|
|
|
style = torch.tensor([0], device=latents.device)
|
|
|
|
target_size = (height, width)
|
|
add_time_ids = list((1024, 1024) + target_size + (0, 0))
|
|
add_time_ids = torch.tensor([add_time_ids], dtype=prompt_embeds.dtype)
|
|
|
|
prompt_embeds = prompt_embeds.to(device=latents.device)
|
|
prompt_attention_mask = prompt_attention_mask.to(device=latents.device)
|
|
prompt_embeds_2 = prompt_embeds_2.to(device=latents.device)
|
|
prompt_attention_mask_2 = prompt_attention_mask_2.to(device=latents.device)
|
|
add_time_ids = add_time_ids.to(dtype=prompt_embeds.dtype, device=latents.device).repeat(
|
|
bsz, 1
|
|
)
|
|
style = style.to(device=latents.device).repeat(bsz)
|
|
|
|
noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps)
|
|
if noise_scheduler.config.prediction_type == "epsilon":
|
|
target = noise
|
|
elif noise_scheduler.config.prediction_type == "v_prediction":
|
|
target = noise_scheduler.get_velocity(latents, noise, timesteps)
|
|
else:
|
|
raise ValueError(f"Unknown prediction type {noise_scheduler.config.prediction_type}")
|
|
|
|
# predict the noise residual
|
|
noise_pred = transformer3d(
|
|
noisy_latents,
|
|
timesteps.to(noisy_latents.dtype),
|
|
encoder_hidden_states=prompt_embeds,
|
|
text_embedding_mask=prompt_attention_mask,
|
|
encoder_hidden_states_t5=prompt_embeds_2,
|
|
text_embedding_mask_t5=prompt_attention_mask_2,
|
|
image_meta_size=add_time_ids,
|
|
style=style,
|
|
image_rotary_emb=image_rotary_emb,
|
|
inpaint_latents=inpaint_latents if args.train_mode != "normal" else None,
|
|
clip_encoder_hidden_states=clip_encoder_hidden_states if args.train_mode != "normal" else None,
|
|
clip_attention_mask=clip_attention_mask if args.train_mode != "normal" else None,
|
|
return_dict=False
|
|
)[0]
|
|
noise_pred, _ = noise_pred.chunk(2, dim=1)
|
|
loss = F.mse_loss(noise_pred.float(), target.float(), reduction="mean")
|
|
else:
|
|
added_cond_kwargs = {"resolution": None, "aspect_ratio": None}
|
|
if unwrap_model(transformer3d).config.sample_size == 128:
|
|
bs, height, width = bsz, batch["pixel_values"].size()[-2], batch["pixel_values"].size()[-1]
|
|
resolution = torch.tensor([height, width]).repeat(bs, 1)
|
|
aspect_ratio = torch.tensor([float(height / width)]).repeat(bs, 1)
|
|
resolution = resolution.to(dtype=encoder_hidden_states.dtype, device=latents.device)
|
|
aspect_ratio = aspect_ratio.to(dtype=encoder_hidden_states.dtype, device=latents.device)
|
|
added_cond_kwargs = {"resolution": resolution, "aspect_ratio": aspect_ratio}
|
|
|
|
loss_term = train_diffusion.training_losses(
|
|
transformer3d,
|
|
latents,
|
|
timesteps,
|
|
noise=noise,
|
|
model_kwargs=dict(
|
|
encoder_hidden_states=encoder_hidden_states,
|
|
encoder_attention_mask=prompt_ids.attention_mask.to(latents.device),
|
|
added_cond_kwargs=added_cond_kwargs,
|
|
inpaint_latents=inpaint_latents if args.train_mode != "normal" else None,
|
|
clip_encoder_hidden_states=clip_encoder_hidden_states if args.train_mode != "normal" else None,
|
|
clip_attention_mask=clip_attention_mask if args.train_mode != "normal" else None,
|
|
return_dict=False
|
|
)
|
|
)
|
|
loss = loss_term['loss'].mean()
|
|
|
|
# Gather the losses across all processes for logging (if we use distributed training).
|
|
avg_loss = accelerator.gather(loss.repeat(args.train_batch_size)).mean()
|
|
train_loss += avg_loss.item() / args.gradient_accumulation_steps
|
|
|
|
# Backpropagate
|
|
accelerator.backward(loss)
|
|
if accelerator.sync_gradients:
|
|
trainable_params_grads = [p.grad for p in trainable_params if p.grad is not None]
|
|
trainable_params_total_norm = torch.norm(torch.stack([torch.norm(g.detach(), 2) for g in trainable_params_grads]), 2)
|
|
max_grad_norm = linear_decay(args.max_grad_norm * args.initial_grad_norm_ratio, args.max_grad_norm, args.abnormal_norm_clip_start, global_step)
|
|
if trainable_params_total_norm / max_grad_norm > 5 and global_step > args.abnormal_norm_clip_start:
|
|
actual_max_grad_norm = max_grad_norm / min((trainable_params_total_norm / max_grad_norm), 10)
|
|
else:
|
|
actual_max_grad_norm = max_grad_norm
|
|
|
|
if args.report_model_info and accelerator.is_main_process:
|
|
if trainable_params_total_norm > 1 and global_step > args.abnormal_norm_clip_start:
|
|
for name, param in transformer3d.named_parameters():
|
|
if param.requires_grad:
|
|
writer.add_scalar(f'gradients/before_clip_norm/{name}', param.grad.norm(), global_step=global_step)
|
|
|
|
norm_sum = accelerator.clip_grad_norm_(trainable_params, actual_max_grad_norm)
|
|
if args.report_model_info and accelerator.is_main_process:
|
|
writer.add_scalar(f'gradients/norm_sum', norm_sum, global_step=global_step)
|
|
writer.add_scalar(f'gradients/actual_max_grad_norm', actual_max_grad_norm, global_step=global_step)
|
|
optimizer.step()
|
|
lr_scheduler.step()
|
|
optimizer.zero_grad()
|
|
|
|
# Checks if the accelerator has performed an optimization step behind the scenes
|
|
if accelerator.sync_gradients:
|
|
|
|
if args.use_ema:
|
|
ema_transformer3d.step(transformer3d.parameters())
|
|
progress_bar.update(1)
|
|
global_step += 1
|
|
accelerator.log({"train_loss": train_loss}, step=global_step)
|
|
train_loss = 0.0
|
|
|
|
if global_step % args.checkpointing_steps == 0:
|
|
if args.use_deepspeed or accelerator.is_main_process:
|
|
# _before_ saving state, check if this save would set us over the `checkpoints_total_limit`
|
|
if args.checkpoints_total_limit is not None:
|
|
checkpoints = os.listdir(args.output_dir)
|
|
checkpoints = [d for d in checkpoints if d.startswith("checkpoint")]
|
|
checkpoints = sorted(checkpoints, key=lambda x: int(x.split("-")[1]))
|
|
|
|
# before we save the new checkpoint, we need to have at _most_ `checkpoints_total_limit - 1` checkpoints
|
|
if len(checkpoints) >= args.checkpoints_total_limit:
|
|
num_to_remove = len(checkpoints) - args.checkpoints_total_limit + 1
|
|
removing_checkpoints = checkpoints[0:num_to_remove]
|
|
|
|
logger.info(
|
|
f"{len(checkpoints)} checkpoints already exist, removing {len(removing_checkpoints)} checkpoints"
|
|
)
|
|
logger.info(f"removing checkpoints: {', '.join(removing_checkpoints)}")
|
|
|
|
for removing_checkpoint in removing_checkpoints:
|
|
removing_checkpoint = os.path.join(args.output_dir, removing_checkpoint)
|
|
shutil.rmtree(removing_checkpoint)
|
|
|
|
save_path = os.path.join(args.output_dir, f"checkpoint-{global_step}")
|
|
accelerator.save_state(save_path)
|
|
logger.info(f"Saved state to {save_path}")
|
|
|
|
if accelerator.is_main_process:
|
|
if args.validation_prompts is not None and global_step % args.validation_steps == 0:
|
|
if args.use_ema:
|
|
# Store the UNet parameters temporarily and load the EMA parameters to perform inference.
|
|
ema_transformer3d.store(transformer3d.parameters())
|
|
ema_transformer3d.copy_to(transformer3d.parameters())
|
|
log_validation(
|
|
vae,
|
|
text_encoder,
|
|
tokenizer,
|
|
transformer3d,
|
|
config,
|
|
args,
|
|
accelerator,
|
|
weight_dtype,
|
|
global_step,
|
|
)
|
|
if args.use_ema:
|
|
# Switch back to the original transformer3d parameters.
|
|
ema_transformer3d.restore(transformer3d.parameters())
|
|
|
|
logs = {"step_loss": loss.detach().item(), "lr": lr_scheduler.get_last_lr()[0]}
|
|
progress_bar.set_postfix(**logs)
|
|
|
|
if global_step >= args.max_train_steps:
|
|
break
|
|
|
|
if accelerator.is_main_process:
|
|
if args.validation_prompts is not None and epoch % args.validation_epochs == 0:
|
|
if args.use_ema:
|
|
# Store the UNet parameters temporarily and load the EMA parameters to perform inference.
|
|
ema_transformer3d.store(transformer3d.parameters())
|
|
ema_transformer3d.copy_to(transformer3d.parameters())
|
|
log_validation(
|
|
vae,
|
|
text_encoder,
|
|
tokenizer,
|
|
transformer3d,
|
|
config,
|
|
args,
|
|
accelerator,
|
|
weight_dtype,
|
|
global_step,
|
|
)
|
|
if args.use_ema:
|
|
# Switch back to the original transformer3d parameters.
|
|
ema_transformer3d.restore(transformer3d.parameters())
|
|
|
|
# Create the pipeline using the trained modules and save it.
|
|
accelerator.wait_for_everyone()
|
|
if accelerator.is_main_process:
|
|
transformer3d = unwrap_model(transformer3d)
|
|
if args.use_ema:
|
|
ema_transformer3d.copy_to(transformer3d.parameters())
|
|
|
|
pipeline = EasyAnimatePipeline.from_pretrained(
|
|
args.pretrained_model_name_or_path,
|
|
transformer=transformer3d,
|
|
torch_dtype=weight_dtype
|
|
)
|
|
pipeline.save_pretrained(args.output_dir)
|
|
|
|
accelerator.end_training()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|