[NV] llm-d-vllm: optimize DSv4-Pro GB200 recipe configs - #2242
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Tune decode and prefill vLLM flags based on validated GB200 NVL72 benchmarks showing +2-43% tok/s/GPU and 15-25% lower TPOT: Decode (mid-curve-megamoe): - gpu-memory-utilization 0.85 -> 0.9 (larger KV cache pool) - Add max-model-len 9280 (tight ISL8192+OSL1024 bound) - max-num-seqs/batched-tokens/cudagraph-capture 512 -> 1024 - Disable NCCL symmetric memory (standard NVLink path faster) - Add no-enable-flashinfer-autotune, rust frontend Prefill (both recipes): - gpu-memory-utilization 0.9 -> 0.95 - Add max-model-len 9280, max-num-seqs 16, max-num-batched-tokens 32768 - Disable NCCL symmetric memory, enable rust frontend - Enable randomize-dp-dummy-inputs EPP (both recipes): - Switch from max-score-picker to weighted-random-picker (threshold=0.1) for better load distribution under high concurrency Low-latency decode: disable NCCL symmetric memory, add rust frontend.
ilmarkov
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July 21, 2026 17:37
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lgtm just need sweep to finish |
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Dispatched trusted sweep run for approved external revision 已为获批的外部提交 |
Contributor
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Dispatched trusted sweep run for approved external revision 已为获批的外部提交 |
Resolve perf-changelog conflict: keep PR SemiAnalysisAI#2242 entry plus upstream additions.
…v/update-dsv4 Resolve perf-changelog conflict: keep single PR SemiAnalysisAI#2242 entry with upstream additions.
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closing in favor of #2498 |
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Tune decode and prefill vLLM flags based on validated GB200 NVL72 benchmarks showing +2-43% tok/s/GPU and 15-25% lower TPOT:
Decode (mid-curve-megamoe):
Prefill (both recipes):
EPP (both recipes):
Low-latency decode: disable NCCL symmetric memory, add rust frontend.