Files
hao-ai-lab-FastVideo/v2/__init__.py
T
SolitaryThinker 4e331eb7ff [refactor] v2: use absolute imports (v2.*) everywhere instead of relative
Mechanical conversion of every relative import under v2/ to an absolute v2.* path
(from .x / ..x / ...x -> from v2.<pkg>.x) so imports are unambiguous, grep-able, and
stable when code is copied/moved between entrypoints (VideoGenerator, CLI, server).

Surgical prefix-only rewrite: only the 'from <dots><module>' prefix changed — import
names, parentheses, multi-line formatting, comments, and ordering are byte-for-byte
preserved (no collapsing, no reorder, no unrelated reformatting).

- 471 imports across 125 files; v2/tests/ was already absolute (untouched).
- Validated: all 125 files compile, every 'from v2.* import' target resolves to a real
  module/package, zero relative imports remain (full sweep), CPU mini suite green
  (202 passed, 2 skipped).
2026-07-04 17:15:34 +00:00

69 lines
2.4 KiB
Python

"""v2 — a scoped, CPU-testable realization of the design_v3 model-native runtime.
> A model card is a (recipe, runtime) pair with a parity obligation.
> The model owns loop semantics; the runtime owns loop lifecycle.
> One resident instance runs many loops; one scheduler runs their steps in one currency.
> Caches are correct by key; parity is correct by test; the interleave gate is non-negotiable.
> Training records behavior on the same loops it serves.
Phase 1 supports Wan2.1-1.3B (T2V) and LTX2.3 (2-stage distilled), plus four training
methods on Wan2.1-1.3B (finetuning, DMD2, DiffusionNFT, self-forcing). The spine is
omni-ready (multi-loop ModelInstance, ar_decode/chunk_rollout loop kinds) for the phase-2
Cosmos3 + vllm-omni omni ports.
The core is numpy-only and CPU-testable; heavy Wan/LTX neural forwards become lazy torch
adapters (see ``v2/models/*/components.py``) that are off the test path.
"""
from __future__ import annotations
from v2._enums import (
Capability,
ConsistencyLevel,
ExecutionProfile,
LoopKind,
WorkUnitKind,
)
from v2.card import (
CapabilityMatrix,
ComponentSpec,
CostModel,
LoopSpec,
ModelCard,
ModelInstance,
ParitySpec,
RecipeSpec,
load_card,
)
from v2.program import ComponentNode, ModelLoopNode, Program, ProgramKind, when_opt, when_task
from v2.request import (
DiffusionParams,
Output,
Request,
SamplingParams,
Session,
TaskType,
make_request,
)
from v2.runtime import AsyncEngine, Engine
__version__ = "0.2.0"
__all__ = [
"ModelCard", "ComponentSpec", "LoopSpec", "RecipeSpec", "ParitySpec", "CostModel",
"CapabilityMatrix", "ModelInstance", "load_card",
"Engine", "AsyncEngine", "Program", "ProgramKind", "ComponentNode", "ModelLoopNode", "when_task", "when_opt",
"Request", "Session", "Output", "make_request", "TaskType", "SamplingParams", "DiffusionParams",
"LoopKind", "WorkUnitKind", "ConsistencyLevel", "ExecutionProfile", "Capability",
"VideoGenerator",
"__version__",
]
def __getattr__(name: str):
# Lazy: the GPU entrypoint imports torch / fastvideo, so resolve it only on access — plain
# ``import v2`` (and the CPU-only mini) stay torch-free.
if name == "VideoGenerator":
from v2.video_generator import VideoGenerator
return VideoGenerator
raise AttributeError(f"module {__name__!r} has no attribute {name!r}")