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6cc1c9332d
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docs: Phase 14 design doc + benchmark, fix Phase 11/12 honesty
Phase 14 (Flash Attention):
- Design doc: FA2 algorithm, SM120 hardware constraints (FA4 incompatible),
kernel config (BR=BC=64, 32KB smem), GQA mapping, causal tile-skip,
known limitations and optimization roadmap
- Benchmark doc: correctness (9/10 top-1 match, identical to pre-FA baseline),
performance tracking (6.9→10.3→12.9 tok/s across phases), memory savings
analysis, remaining bottleneck breakdown
Phase 11 doc: title corrected from "Paged Attention" to "GPU-Resident KV Cache"
with explicit note that paged allocation was not implemented.
Phase 12 doc: "当前状态" updated from "未实现" to reflect actual state —
iteration-level scheduling implemented + verified (6.0x concurrent speedup),
batched GPU forward explicitly marked as not yet implemented.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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2026-05-22 18:51:29 +08:00 |
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