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[misc] cosmos3 PORT_STATUS: DiT framework parity verified (both rope modes)

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SolitaryThinker
2026-06-06 21:05:44 -07:00
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tests/local_tests/cosmos3/PORT_STATUS.md
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## Current Phase
- phase: `PR1 (video core): arch config + framework parity-reference harness landed; native DiT module rewrite next`
- phase: `PR1 (video core): DiT ported + framework parity VERIFIED bit-identical (3d_rope + unified_3d_mrope). Next: conversion + video pipeline`
- status: `in_progress`
- owner: `orchestrator`
- last_updated: `2026-06-06`
@@ -61,7 +61,7 @@
| ID | Phase | Component | Severity | Issue | Evidence | Owner | Status | Resolution |
|---|---|---|---|---|---|---|---|---|
| I001 | port | transformer | high | Branch DiT (`Cosmos3VFMTransformer`+`Cosmos3LanguageModel`) built vs vllm-omni #3454; official checkpoint loads `Cosmos3OmniTransformer` (diffusers shim). Class/structure reconciliation required. | `model_index.json`; `diffusers_cosmos3/transformer.py`; branch commit `52bb65f49` | orchestrator | open | |
| I001 | port | transformer | high | Branch DiT (`Cosmos3VFMTransformer`+`Cosmos3LanguageModel`) built vs vllm-omni #3454; official checkpoint loads `Cosmos3OmniTransformer` (diffusers shim). Class/structure reconciliation required. | `model_index.json`; `diffusers_cosmos3/transformer.py`; branch commit `52bb65f49` | orchestrator | resolved | DiT rewritten to checkpoint layout (single `layers` dual-pathway, BaseDiT-conformant); bit-identical framework parity (3d_rope + unified_3d_mrope), commits 59a4a571c/7c4633295 |
| I002 | all | tests | medium | Tier-A conftest+tests mirror vllm-omni line-by-line (stubs, `vllm_omni...guardrails`). Must be repointed to `diffusers_cosmos3` / official structures. | `tests/local_tests/cosmos3/conftest.py` | orchestrator | open | |
## Escape Hatches