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v2_backup
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Author SHA1 Message Date
SolitaryThinker db866dfb04 [misc] v2: simplify docstrings/comments + drop deleted-design-doc citations 
Sweep all 296 v2 modules: simplify verbose docstrings/comments and remove 376 dangling
"(design_vN §X)" citations to the now-deleted design docs (v2/README.md is the source of
truth). Comment/docstring-only — AST-verified code-identical; the CPU suite holds at 237
passed / 5 pre-existing. Also applies yapf + ruff --fix auto-fixes (import ordering,
forward-ref annotation de-quoting under `from __future__ import annotations`; behavior-
neutral, suite-confirmed) and adds the legitimate domain terms mot/clen/te to the codespell
ignore-list. Remaining ruff (24) + mypy (68 no-untyped-call) findings are pre-existing v2
debt, untouched here.
 2026-06-19 20:54:59 +00:00
SolitaryThinker 3149d0ec89 [feat] v2: port the 14 remaining bucket-C archs as self-contained recipe packages 
Completes the bucket-C porting backlog. Each arch is a self-contained recipe
package (card-declared torch adapter via ComponentSpec.adapter + a new/forked
loop + program, NO edit to the shared torch_backend dispatch), following the
cosmos2 reference pattern. One _BUCKET_C table in v2/registry.py drives both the
explicit HF-id registry (PRIMARY) and the select_by_architecture fallback.

Ported (CPU-verified: import + card/program build + registry resolve + denoise
loop runs end-to-end on the CPU toy backend; GPU load/run is BRINGUP):
  * cosmos25       — Cosmos-Predict2.5 (flow-match, per-frame plain-sigma timestep;
                     reuse FLOW_MATCH_STEP; Reason1/Qwen2.5-VL encoder adapter)
  * hunyuan_video  — HunyuanVideo (reuses WanDenoiseLoop; dual LLaMA+CLIP encoders;
                     Hunyuan VAE scaling_factor) + FastHunyuan variant
  * hunyuan_video15 — HunyuanVideo 1.5 (480p/720p cards)
  * longcat        — LongCat-Video T2V/I2V/VC
  * sd35           — SD3.5 MMDiT (flow-match, image; triple-encoder joint embed +
                     pooled_projections)
  * gen3c          — GEN3C (EDM; 82ch pose-buffer DiT; camera/depth -> BRINGUP)
  * kandinsky5     — Kandinsky 5.0 T2V Lite
  * flux2          — FLUX.2 dev/klein (MMDiT, image; gated weights -> BRINGUP)
  * stable_audio   — Stable Audio Open (audio modality)
  * hunyuangamecraft, hyworld, lingbotworld, matrixgame2, matrixgame3 — interactive
                     world models; t2v/degenerate path CPU-verified, action/camera/
                     memory conditioning is BRINGUP (needs request-API extension)

Adapters declared via ComponentSpec.adapter (the ac29750b enabler) so each port
adds only NEW files (recipe package + per-arch torch_<arch>.py + optional facade
stub) — zero shared-file edits. Registry resolves all 31 bucket-C HF ids by exact
id + 14 architecture fallbacks; no regression (cosmos2/wan/ltx2 unchanged).
v2 mini green (211 passed, 2 skipped); pre-commit clean (per-file/registry).
 2026-06-18 16:04:36 +00:00
Will Lin 705f580542 [refactor] v2 torch backend: TorchComponent base + one generic builder + v2.* facade (Phase 1b/1c) 
Addresses the adapter-setup pains: collapses the torch_cuda(trampolines)/torch_adapters/torch_ltx2 split
+ 11 near-identical adapter classes + 6 build_torch_* builders into:
- v2/platform/backends/torch_backend.py: a TorchComponent base centralizing .to/.eval, the numpy<->torch
  marshalling (ONE place), the set_forward_context wrap, and the weight surface; thin per-model subclasses
  (WanDiT/LTX2DiT/WanVAE/LTX2VAE/T5Encoder/Gemma/LTX2Upsampler/LTX2AudioVAE/LTX2Vocoder) carrying only
  forward semantics; and ONE build_component(spec) dispatching by spec.kind via _MAKERS.
- torch_cuda.py: registers that single generic builder for all 6 cuda kinds (no per-kind trampolines).
- v2 owns its namespace via re-export STUBS (facade, marked '# STUB'): v2/forward_context, v2/fastvideo_args,
  v2/distributed, v2/loader (the load_component seam), v2/api, v2/models/{dits,audio,upsamplers}/*. All v2
  code imports v2.*; 'from fastvideo' now lives ONLY in those 8 stub files -> a future per-module vendored
  cutover swaps a stub body, no caller changes. No divergence (stubs run fastvideo's live code).
- Deleted torch_adapters.py + torch_ltx2.py.

Verified: CPU mini 210 pass/2 skip; lazy invariant (platform load imports no torch); GPU bit-parity LTX-2.3
T2VS (audio std 0.04304, identical to pre-redesign) + Wan2.1 (video std 31.94, motion 5.997).
 2026-06-18 11:01:45 +00:00