Claude e0fe46a46f arch(CRITICAL): deploy ALL base engine patches — paged_attn, xformers, sequence, scheduler
CCCL segmented_sort.cu AST chain → traced back to base engine zip →
discovered base patch_ops.sh deploys 10+ files we were missing.

Missing patches that caused real failures:
1. paged_attn.py — Triton context_attention_fwd HANGS BI-V100 GPUs permanently.
   Base engine replaces it with _forward_prefix_pytorch pure-PyTorch fallback.
   WITHOUT THIS: GPU hang on any prefix-cached request → timeout → 0 score.

2. patch_xformers_sdpa_seq.py — head_dim=256 > cudnnFlashAttn 128 limit.
   Qwen3.5 uses head_dim=256. Without this bypass, attention crashes.

3. sequence.py — completion_tokens inflation under chunked prefill.
   Bug: get_output_token_ids_to_return(delta=True) with num_new_tokens=0
   returns the ENTIRE prompt. 10K prompt × 3 chunks = 30K false tokens.

4. scheduler.py — num_cached_tokens tracking for prefix caching.

5. mamba_cache.py — GatedDeltaNet state management.

6. patch_model_runner.py — prefix_cache_hit stays True in chunked-prefill
   chunk 2+, causing undersized block_tables and crash.

Also: conditional qwen3_5.py deployment (CCCL JIT pattern) — if Docker
image already has a working qwen3_5.py (with corex integration), don't
overwrite it. Only deploy ours if the image version is missing.
2026-08-08 10:48:01 +00:00
2026-08-07 08:43:51 +00:00
2026-07-30 17:03:23 +08:00
2026-08-07 07:47:01 +00:00

project_6

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