Files
numz-ComfyUI-SeedVR2_VideoU…/src/optimization/memory_manager.py
T
Adrien Toupet 477f57fd5a Refactor: Three-phase batch processing pipeline for improved performance
Major architectural change to minimize model swapping overhead by processing
all batches in three distinct phases instead of sequential per-batch processing:
- Phase 1: Encode all batches with VAE
- Phase 2: Upscale all latents with DiT
- Phase 3: Decode all latents with VAE

Core changes:
- Split monolithic generation_loop into modular functions:
  - prepare_generation_context(): Shared state management
  - setup_device_environment(): Device configuration
  - prepare_runner(): Model loading with cache support
  - encode_all_batches(): Batch VAE encoding
  - upscale_all_batches(): Batch DiT upscaling
  - decode_all_batches(): Batch VAE decoding
- Removed generation_step function (logic integrated into upscale phase)
- Added lazy precision initialization to avoid redundant setup

Performance improvements:
- Pre-allocated lists for memory efficiency
- Better cleanup of intermediate storage between phases
- Added unique timer names to clear_memory() to avoid naming conflicts
- Improved model state management with change detection and caching

UI/UX enhancements:
- Switched to ComfyUI's native ProgressBar with weighted phase progress
- Changed from per-batch FPS to overall average FPS (always visible)
- Improved log clarity with clear phase separators
- Added ASCII art logo to clearly identify SeedVR2 process start
- Better progress tracking with weighted percentages across three phases

Code cleanup:
- Removed deprecated timer_context from Debug class
- Removed unused time imports across multiple files
- Fixed LOCAL_RANK environment variable to handle string conversion properly
- Improved error handling with try/except/finally blocks in all phases
2025-09-16 14:38:57 -04:00

791 lines
30 KiB
Python

"""
Memory management module for SeedVR2
Handles VRAM usage, cache management, and memory optimization
Extracted from: seedvr2.py (lines 373-405, 607-626, 1016-1044)
"""
import torch
import gc
import sys
import time
import psutil
from typing import Tuple, Dict, Any, Optional, List, Union
from src.common.cache import Cache
from src.common.distributed import get_device
def get_device_list():
devs = ["none"]
try:
if hasattr(torch, "cuda") and hasattr(torch.cuda, "is_available") and torch.cuda.is_available():
devs += [f"cuda:{i}" for i in range(torch.cuda.device_count())]
except Exception:
pass
try:
if hasattr(torch, "mps") and hasattr(torch.mps, "is_available") and torch.mps.is_available():
devs += [f"mps:{i}" for i in range(torch.mps.device_count())]
except Exception:
pass
if len(devs) > 1:
return devs[1:]
return devs
def get_basic_vram_info() -> Dict[str, Any]:
"""
Get basic VRAM availability info (free and total memory).
Used for capacity planning and initial checks.
Returns:
dict: {"free_gb": float, "total_gb": float} or {"error": str}
"""
try:
if torch.cuda.is_available():
device = get_device()
free_memory, total_memory = torch.cuda.mem_get_info(device)
elif torch.mps.is_available():
mem = psutil.virtual_memory()
free_memory = mem.total - mem.used
total_memory = mem.total
else:
return {"error": "No GPU backend available (CUDA/MPS)"}
return {
"free_gb": free_memory / (1024**3),
"total_gb": total_memory / (1024**3)
}
except Exception as e:
return {"error": f"Failed to get memory info: {str(e)}"}
# Initial VRAM check at module load
vram_info = get_basic_vram_info()
if "error" not in vram_info:
backend = "MPS" if torch.mps.is_available() else "CUDA"
print(f"📊 Initial {backend} memory: {vram_info['free_gb']:.2f}GB free / {vram_info['total_gb']:.2f}GB total")
else:
print(f"⚠️ Memory check failed: {vram_info['error']} - No available backend!")
def get_vram_usage(debug: Optional[Any] = None) -> Tuple[float, float, float]:
"""
Get current VRAM usage metrics for monitoring.
Used for tracking memory consumption during processing.
Args:
debug: Optional debug instance for logging
Returns:
tuple: (allocated_gb, reserved_gb, max_allocated_gb)
Returns (0, 0, 0) if no GPU available
"""
try:
if torch.cuda.is_available():
device = get_device()
allocated = torch.cuda.memory_allocated(device) / (1024**3)
reserved = torch.cuda.memory_reserved(device) / (1024**3)
max_allocated = torch.cuda.max_memory_allocated(device) / (1024**3)
return allocated, reserved, max_allocated
elif torch.mps.is_available():
allocated = torch.mps.current_allocated_memory() / (1024**3)
reserved = torch.mps.driver_allocated_memory() / (1024**3)
max_allocated = allocated # MPS doesn't track peak separately
return allocated, reserved, max_allocated
except Exception as e:
if debug:
debug.log(f"Failed to get VRAM usage: {e}", level="WARNING", category="memory", force=True)
return 0.0, 0.0, 0.0
def get_ram_usage(debug: Optional[Any] = None) -> Tuple[float, float, float, float]:
"""
Get current RAM usage metrics for the current process.
Provides accurate tracking of process-specific memory consumption.
Args:
debug: Optional debug instance for logging
Returns:
tuple: (process_gb, available_gb, total_gb, used_by_others_gb)
Returns (0, 0, 0, 0) if psutil not available or on error
"""
try:
if not psutil:
return 0.0, 0.0, 0.0, 0.0
# Get current process memory
process = psutil.Process()
process_memory = process.memory_info()
process_gb = process_memory.rss / (1024**3)
# Get system memory
sys_memory = psutil.virtual_memory()
total_gb = sys_memory.total / (1024**3)
available_gb = sys_memory.available / (1024**3)
# Calculate memory used by other processes
# This is the CORRECT calculation:
total_used_gb = total_gb - available_gb # Total memory used by ALL processes
used_by_others_gb = max(0, total_used_gb - process_gb) # Subtract current process
return process_gb, available_gb, total_gb, used_by_others_gb
except Exception as e:
if debug:
debug.log(f"Failed to get RAM usage: {e}", level="WARNING", category="memory", force=True)
return 0.0, 0.0, 0.0, 0.0
# Global cache for OS libraries (initialized once)
_os_memory_lib = None
def clear_memory(debug: Optional[Any] = None, deep: bool = False, force: bool = True,
timer_name: Optional[str] = None) -> None:
"""
Clear memory caches with two-tier approach for optimal performance.
Args:
debug: Debug instance for logging (optional)
force: If True, always clear. If False, only clear when <15% free
deep: If True, perform deep cleanup including GC and OS operations.
If False (default), only perform minimal GPU cache clearing.
timer_name: Optional suffix for timer names to make them unique per invocation
Two-tier approach:
- Minimal mode (deep=False): GPU cache operations (~1-5ms)
Used for frequent calls during batch processing
- Deep mode (deep=True): Complete cleanup with GC and OS operations (~10-50ms)
Used at key points like model switches or final cleanup
"""
global _os_memory_lib
# Create unique timer names if suffix provided
if timer_name:
main_timer = f"memory_clear_{timer_name}"
gpu_timer = f"gpu_cache_clear_{timer_name}"
gc_timer = f"garbage_collection_{timer_name}"
os_timer = f"os_memory_release_{timer_name}"
completion_msg = f"clear_memory() completion ({timer_name})"
else:
main_timer = "memory_clear"
gpu_timer = "gpu_cache_clear"
gc_timer = "garbage_collection"
os_timer = "os_memory_release"
completion_msg = "clear_memory() completion"
# Start timer for entire operation
if debug:
debug.start_timer(main_timer)
# Check if we should clear based on memory pressure
if not force:
should_clear = False
# Use existing function for memory info
mem_info = get_basic_vram_info()
if "error" not in mem_info:
# Check VRAM/MPS memory pressure (15% free threshold)
free_ratio = mem_info["free_gb"] / mem_info["total_gb"]
if free_ratio < 0.15:
should_clear = True
if debug:
backend = "MPS" if torch.mps.is_available() else "VRAM"
debug.log(f"{backend} pressure: {mem_info['free_gb']:.2f}GB free of {mem_info['total_gb']:.2f}GB", category="memory")
# For non-MPS systems, also check system RAM separately
if not should_clear and not torch.mps.is_available():
mem = psutil.virtual_memory()
if mem.available < mem.total * 0.15:
should_clear = True
if debug:
debug.log(f"RAM pressure: {mem.available/(1024**3):.2f}GB free of {mem.total/(1024**3):.2f}GB", category="memory")
if not should_clear:
return
# Determine cleanup level
cleanup_mode = "deep" if deep else "minimal"
if debug:
debug.log(f"Clearing memory caches ({cleanup_mode})...", category="cleanup")
# ===== MINIMAL OPERATIONS (Always performed) =====
# Step 1: Clear GPU caches - Fast operations (~1-5ms)
if debug:
debug.start_timer(gpu_timer)
if torch.cuda.is_available():
torch.cuda.empty_cache()
torch.cuda.ipc_collect()
elif torch.mps.is_available():
torch.mps.empty_cache()
if debug:
debug.end_timer(gpu_timer, "GPU cache clearing")
# ===== DEEP OPERATIONS (Only when deep=True) =====
if deep:
# Step 2: Deep garbage collection (expensive ~5-20ms)
if debug:
debug.start_timer(gc_timer)
gc.collect(2)
if debug:
debug.end_timer(gc_timer, "Garbage collection")
# Step 3: Return memory to OS (platform-specific, ~5-30ms)
if debug:
debug.start_timer(os_timer)
try:
if sys.platform == 'linux':
# Linux: malloc_trim
import ctypes # Import only when needed
if _os_memory_lib is None:
_os_memory_lib = ctypes.CDLL("libc.so.6")
_os_memory_lib.malloc_trim(0)
elif sys.platform == 'win32':
# Windows: Trim working set
import ctypes # Import only when needed
if _os_memory_lib is None:
_os_memory_lib = ctypes.windll.kernel32
handle = _os_memory_lib.GetCurrentProcess()
_os_memory_lib.SetProcessWorkingSetSize(handle, -1, -1)
elif torch.mps.is_available():
# macOS with MPS
import ctypes # Import only when needed
import ctypes.util
if _os_memory_lib is None:
libc_path = ctypes.util.find_library('c')
if libc_path:
_os_memory_lib = ctypes.CDLL(libc_path)
if _os_memory_lib:
_os_memory_lib.sync()
except Exception as e:
if debug:
debug.log(f"Failed to perform OS memory operations: {e}", level="WARNING", category="memory", force=True)
if debug:
debug.end_timer(os_timer, "OS memory release")
# End overall timer
if debug:
debug.end_timer(main_timer, completion_msg)
def retry_on_oom(func, *args, debug=None, operation_name="operation", **kwargs):
"""
Execute function with single OOM retry after memory cleanup.
Args:
func: Callable to execute
*args: Positional arguments for func
debug: Debug instance for logging (optional)
operation_name: Name for logging
**kwargs: Keyword arguments for func
Returns:
Result of func(*args, **kwargs)
"""
try:
return func(*args, **kwargs)
except (torch.cuda.OutOfMemoryError, RuntimeError) as e:
# Only handle OOM errors
if not any(x in str(e).lower() for x in ["out of memory", "allocation on device"]):
raise
if debug:
debug.log(f"OOM during {operation_name}: {e}", level="WARNING", category="memory", force=True)
debug.log(f"Clearing memory and retrying", category="info", force=True)
# Clear memory
clear_memory(debug=debug, deep=True, force=True, timer_name=operation_name)
# Let memory settle
time.sleep(0.5)
debug.log_memory_state("After memory clearing", show_tensors=True, detailed_tensors=False)
# Single retry
try:
result = func(*args, **kwargs)
if debug:
debug.log(f"Retry successful for {operation_name}", category="success", force=True)
return result
except Exception as retry_e:
if debug:
debug.log(f"Retry failed for {operation_name}: {retry_e}", level="ERROR", category="memory", force=True)
raise
def reset_vram_peak(debug: Optional[Any]) -> None:
"""
Reset VRAM peak memory statistics for fresh tracking.
"""
if debug and debug.enabled:
debug.log("Resetting VRAM peak memory statistics", category="memory")
try:
if torch.cuda.is_available():
device = get_device()
torch.cuda.reset_peak_memory_stats(device)
# MPS doesn't support peak memory reset
except Exception as e:
if debug and debug.enabled:
debug.log(f"Failed to reset peak memory stats: {e}", level="WARNING", category="memory", force=True)
def clear_rope_lru_caches(model: Optional[torch.nn.Module], debug: Optional[Any] = None) -> int:
"""
Clear ALL LRU caches from RoPE modules.
Args:
model: PyTorch model to clear caches from
debug: Optional debug instance for logging
Returns:
Number of caches cleared
"""
if model is None:
return 0
cleared_count = 0
try:
for name, module in model.named_modules():
if hasattr(module, 'get_axial_freqs') and hasattr(module.get_axial_freqs, 'cache_clear'):
try:
module.get_axial_freqs.cache_clear()
cleared_count += 1
except Exception as e:
if debug:
debug.log(f"Failed to clear RoPE LRU cache for module {name}: {e}", level="WARNING", category="memory", force=True)
except (AttributeError, RuntimeError) as e:
if debug:
debug.log(f"Failed to iterate model modules for RoPE LRU cache clearing: {e}", level="WARNING", category="memory", force=True)
return cleared_count
def release_tensor_memory(tensor: Optional[torch.Tensor]) -> None:
"""Release tensor memory properly without CPU allocation"""
if tensor is not None and torch.is_tensor(tensor):
if tensor.is_cuda or tensor.is_mps:
# Release GPU memory directly without CPU transfer
if tensor.numel() > 0:
tensor.data.set_()
tensor.grad = None
def release_text_embeddings(*embeddings: torch.Tensor, debug: Optional[Any] = None, names: Optional[List[str]] = None) -> None:
"""
Release memory for text embeddings
Args:
*embeddings: Variable number of embedding tensors to release
debug: Optional debug instance for logging
names: Optional list of names for logging
"""
for i, embedding in enumerate(embeddings):
if embedding is not None:
release_tensor_memory(embedding)
if debug and names and i < len(names):
debug.log(f"Cleaned up {names[i]}", category="cleanup")
def release_model_memory(model: Optional[torch.nn.Module], debug: Optional[Any] = None) -> None:
"""
Release all GPU/MPS memory from model in-place without CPU transfer.
Args:
model: PyTorch model to release memory from
debug: Optional debug instance for logging
"""
if model is None:
return
try:
# Clear gradients first
model.zero_grad(set_to_none=True)
# Release GPU memory directly without CPU transfer
released_params = 0
released_buffers = 0
for param in model.parameters():
if param.is_cuda or param.is_mps:
if param.numel() > 0:
param.data.set_()
released_params += 1
param.grad = None
for buffer in model.buffers():
if buffer.is_cuda or buffer.is_mps:
if buffer.numel() > 0:
buffer.data.set_()
released_buffers += 1
if debug and (released_params > 0 or released_buffers > 0):
debug.log(f"Released memory from {released_params} params and {released_buffers} buffers", category="success")
except (AttributeError, RuntimeError) as e:
if debug:
debug.log(f"Failed to release model memory: {e}", level="WARNING", category="memory", force=True)
def manage_model_device(model: Optional[torch.nn.Module], target_device: str,
model_name: str = "model", preserve_vram: bool = False,
debug: Optional[Any] = None, reason: Optional[str] = None,
runner: Optional[Any] = None) -> bool:
"""
Unified model device management with intelligent movement and logging.
Handles BlockSwap-enabled models transparently.
Args:
model: The model to move
target_device: Target device ('cuda:0', 'cpu', etc.)
model_name: Name for logging (e.g., "VAE", "DiT")
preserve_vram: Whether preserve_vram mode is active
debug: Debug instance for logging
reason: Optional custom reason for the movement
runner: Optional runner instance for BlockSwap detection
Returns:
bool: True if model was moved, False if already on target device
"""
if model is None:
return False
# Check if this is a BlockSwap-enabled DiT model
is_blockswap_model = False
actual_model = model
if runner and model_name == "DiT" and hasattr(runner, "_blockswap_active") and runner._blockswap_active:
is_blockswap_model = True
# Get the actual model (handle FP8CompatibleDiT wrapper)
if hasattr(model, "dit_model"):
actual_model = model.dit_model
# Get current device
try:
current_device = next(model.parameters()).device
except StopIteration:
return False
# Normalize device strings for comparison
target_type = target_device.split(':')[0] if ':' in target_device else target_device
current_type_upper = str(current_device.type).upper()
target_device_upper = target_device.upper()
# Skip if already on target device (unless BlockSwap needs reconfiguration)
if current_type_upper == target_device_upper and not is_blockswap_model:
return False
# Handle BlockSwap models specially
if is_blockswap_model:
return _handle_blockswap_model_movement(
runner, actual_model, current_device, target_device, target_type,
model_name, debug, reason
)
# Standard model movement (non-BlockSwap)
return _standard_model_movement(
model, current_device, target_device, target_type, model_name,
preserve_vram, debug, reason, target_device_upper
)
def _handle_blockswap_model_movement(runner: Any, model: torch.nn.Module,
current_device: torch.device, target_device: str,
target_type: str, model_name: str,
debug: Optional[Any], reason: Optional[str]) -> bool:
"""
Handle device movement for BlockSwap-enabled models.
Args:
runner: Runner instance with BlockSwap configuration
model: Model to move (actual unwrapped model)
current_device: Current device of the model
target_device: Target device string
target_type: Target device type (cpu/cuda)
model_name: Model name for logging
debug: Debug instance
reason: Movement reason
Returns:
bool: True if model was moved
"""
# Import BlockSwap function (avoid circular import)
from src.optimization.blockswap import set_blockswap_bypass
if target_type == "cpu":
# Moving to CPU (offload)
if debug:
current_device_str = str(current_device).upper()
debug.log(f"Moving {model_name} from {current_device_str} to {target_device.upper()} ({reason or 'preserve_vram'})", category="general")
# Enable bypass to allow movement
set_blockswap_bypass(runner=runner, bypass=True, debug=debug)
# Start timer
timer_name = f"{model_name.lower()}_to_cpu"
if debug:
debug.start_timer(timer_name)
# Move entire model to CPU
model.to("cpu")
model.zero_grad(set_to_none=True)
if debug:
debug.end_timer(timer_name, "BlockSwap model offloaded to CPU")
return True
else:
# Moving to GPU (reload)
# Check if we're in bypass mode (coming from preserve_vram offload)
if not getattr(runner, "_blockswap_bypass_protection", False):
# Not in bypass mode, blocks are already configured
return False
if debug:
debug.log(f"Moving DiT from CPU to {target_device.upper()} ({reason or 'inference requirement'})", category="general")
timer_name = f"{model_name.lower()}_to_gpu"
if debug:
debug.start_timer(timer_name)
# Restore blocks to their configured devices
if hasattr(model, "blocks") and hasattr(model, "blocks_to_swap"):
device = str(target_device)
# Move blocks according to BlockSwap configuration
for b, block in enumerate(model.blocks):
if b > model.blocks_to_swap:
# This block should be on GPU
block.to(device)
else:
# This block stays on CPU (will be swapped during forward)
block.to("cpu")
# Handle I/O components
if not runner._block_swap_config.get("offload_io_components", False):
# I/O components should be on GPU if not offloaded
for name, module in model.named_children():
if name != "blocks":
module.to(device)
else:
# I/O components stay on CPU (will be swapped during forward)
for name, module in model.named_children():
if name != "blocks":
module.to("cpu")
if debug:
# Get actual configuration from runner
if hasattr(runner, '_block_swap_config'):
blocks_on_gpu = runner._block_swap_config.get('total_blocks', 32) - runner._block_swap_config.get('blocks_swapped', 16)
total_blocks = runner._block_swap_config.get('total_blocks', 32)
main_device = runner._block_swap_config.get('main_device', 'GPU')
debug.log(f"BlockSwap blocks restored to configured devices ({blocks_on_gpu}/{total_blocks} blocks on {main_device.upper()})", category="success")
else:
debug.log("BlockSwap blocks restored to configured devices", category="success")
# Disable bypass, re-enable protection
set_blockswap_bypass(runner=runner, bypass=False, debug=debug)
if debug:
debug.end_timer(timer_name, "BlockSwap model restored")
return True
def _standard_model_movement(model: torch.nn.Module, current_device: torch.device,
target_device: str, target_type: str,
model_name: str, preserve_vram: bool,
debug: Optional[Any], reason: Optional[str],
target_device_upper: str) -> bool:
"""
Handle standard (non-BlockSwap) model movement.
Args:
model: Model to move
current_device: Current device of the model
target_device: Target device string
target_type: Target device type
model_name: Model name for logging
preserve_vram: Whether in preserve_vram mode
debug: Debug instance
reason: Movement reason
target_device_upper: Target device type (uppercase)
Returns:
bool: True if model was moved
"""
# Determine reason for movement
if not reason:
reason = "preserve_vram" if preserve_vram else "inference requirement"
# Log the movement with full device strings
if debug:
current_device_str = str(current_device).upper()
debug.log(f"Moving {model_name} from {current_device_str} to {target_device_upper} ({reason})", category="general")
# Start timer based on direction
timer_name = f"{model_name.lower()}_to_{'gpu' if target_type != 'cpu' else 'cpu'}"
if debug:
debug.start_timer(timer_name)
# Move model and clear gradients
model.to(target_device)
model.zero_grad(set_to_none=True)
# Clear VAE memory buffers when moving to CPU
if target_type == 'cpu' and model_name == "VAE":
cleared_count = 0
for module in model.modules():
if hasattr(module, 'memory') and module.memory is not None:
if torch.is_tensor(module.memory) and (module.memory.is_cuda or module.memory.is_mps):
module.memory = None
cleared_count += 1
if cleared_count > 0 and debug:
debug.log(f"Cleared {cleared_count} VAE memory buffers", category="success")
# End timer
if debug:
debug.end_timer(timer_name, f"{model_name} moved to {target_device_upper}")
return True
def clear_runtime_caches(runner: Any, debug: Optional[Any]) -> int:
"""
Clear all runtime caches and temporary attributes.
"""
if not runner:
return 0
if debug:
debug.start_timer("runtime_cache_clear")
cleaned_items = 0
# 1. Clear main runner cache
if hasattr(runner, 'cache') and hasattr(runner.cache, 'cache'):
if debug:
debug.start_timer("runner_cache_clear")
cache_entries = len(runner.cache.cache)
# Properly release tensor memory
for key, value in list(runner.cache.cache.items()):
if torch.is_tensor(value):
release_tensor_memory(value)
elif isinstance(value, (list, tuple)):
for item in value:
if torch.is_tensor(item):
release_tensor_memory(item)
runner.cache.cache.clear()
cleaned_items += cache_entries
if debug:
debug.end_timer("runner_cache_clear", f"Clearing main runner cache entries")
if cache_entries > 0:
debug.log(f"Cleared {cache_entries} runtime cache entries", category="success")
# 2. Clear RoPE caches
if hasattr(runner, 'dit'):
if debug:
debug.start_timer("rope_cache_clear")
model = runner.dit
if hasattr(model, 'dit_model'): # Handle wrapper
model = model.dit_model
rope_cleared = clear_rope_lru_caches(model=model, debug=debug)
cleaned_items += rope_cleared
if debug:
debug.end_timer("rope_cache_clear", "Clearing RoPE LRU caches")
if rope_cleared > 0:
debug.log(f"Cleared {rope_cleared} RoPE LRU caches", category="success")
# 3. Clear temporary attributes
temp_attrs = ['_temp_cache', '_block_cache', '_swap_cache', '_generation_cache',
'_rope_cache', '_intermediate_cache', '_backward_cache']
for obj in [runner, getattr(runner, 'dit', None), getattr(runner, 'vae', None)]:
if obj is None:
continue
actual_obj = obj.dit_model if hasattr(obj, 'dit_model') else obj
for attr in temp_attrs:
if hasattr(actual_obj, attr):
delattr(actual_obj, attr)
cleaned_items += 1
if debug:
debug.end_timer("runtime_cache_clear", f"clear_runtime_caches() completion")
return cleaned_items
def complete_cleanup(runner: Any, debug: Optional[Any], keep_models_in_ram: bool = False) -> None:
"""
Complete cleanup of runner and all components.
"""
if not runner:
return
cleanup_type = "partial cleanup (keeping models in RAM)" if keep_models_in_ram else "full cleanup"
if debug:
debug.log(f"Starting {cleanup_type}", category="cleanup")
# 1. Clean BlockSwap if active
if hasattr(runner, "_blockswap_active") and runner._blockswap_active:
# Import here to avoid circular dependency
from src.optimization.blockswap import cleanup_blockswap
cleanup_blockswap(runner=runner, keep_state_for_cache=keep_models_in_ram)
# 2. Clear all runtime caches
clear_runtime_caches(runner=runner, debug=debug)
if keep_models_in_ram:
# 3a. Partial cleanup - move models to CPU but keep structure
blockswap_configured = hasattr(runner, '_block_swap_config') and runner._block_swap_config
if hasattr(runner, 'dit') and not blockswap_configured:
manage_model_device(model=runner.dit, target_device='cpu', model_name="DiT", preserve_vram=True, debug=debug, reason="model caching")
elif blockswap_configured and debug:
debug.log("Skipping DiT movement - BlockSwap configuration preserved", category="general")
if hasattr(runner, 'vae'):
manage_model_device(model=runner.vae, target_device='cpu', model_name="VAE", preserve_vram=True, debug=debug, reason="model caching")
else:
# 3b. Full cleanup - release memory and delete
if hasattr(runner, 'dit'):
release_model_memory(model=runner.dit, debug=debug)
runner.dit = None
debug.log("DiT model deleted", category="cleanup")
if hasattr(runner, 'vae'):
release_model_memory(model=runner.vae, debug=debug)
runner.vae = None
debug.log("VAE model deleted", category="cleanup")
# Clear other components
for component in ['sampler', 'sampling_timesteps', 'schedule', 'config']:
if hasattr(runner, component):
setattr(runner, component, None)
# 4. Final memory cleanup
clear_memory(debug=debug, deep=True, force=True, timer_name="complete_cleanup")
# 5. Clearing cuBLAS workspaces
torch._C._cuda_clearCublasWorkspaces() if hasattr(torch._C, '_cuda_clearCublasWorkspaces') else None
debug.log(f"Completed {cleanup_type}", category="success")