muh-engine 0d810ff989 [ENGINE] muh_cc_dispatch + analysis: max_num_seqs=1 from computility-run.yaml
CRITICAL FINDING from reading computility-run.yaml:
  --max-num-seqs 1

This means the competition ALWAYS runs single-sequence inference.
All batch-level optimizations (padded_grid_reduction batching,
multi-seq V2 parallelism, batch-wise tensor caching) have ZERO
impact on actual performance.

The real bottleneck is single-sequence KV cache access:
  - decode: 1 seq × all heads × all KV blocks
  - prefill: 1 seq × chunked (max_num_batched_tokens=8192)
  - MoE: 1 seq × top_k=8 experts × 64 layers

Updated muh_cc_dispatch.py to record QWEN36_MAX_NUM_SEQS=1.

CCCL insight from padded_grid_reduction.cu: the padded grid batching
pattern is only beneficial when num_seqs > 1. For single-seq,
the per-sequence loop (range(1)) has zero overhead — the focus
should be on single-sequence tile optimization instead.

CCCL files: thrust/examples/padded_grid_reduction.cu,
cub/block/block_exchange.cuh
2026-08-06 01:02:21 +00:00
2026-07-30 17:03:23 +08:00

project_6

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