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adjust best config for attn #2516

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merged 1 commit into from
Oct 22, 2024
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adjust best config for attn #2516

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5 changes: 3 additions & 2 deletions benchmarks/triton_kernels_benchmark/flash_attention_fwd_benchmark.py
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Original file line number Diff line number Diff line change
Expand Up @@ -171,7 +171,7 @@ def forward(q, k, v, causal, sm_scale):
assert Lk in {16, 32, 64, 128}
o = torch.empty_like(q, dtype=torch.float32)
BLOCK_M = 128
BLOCK_N = 64 if Lk <= 64 else 32
BLOCK_N = 64
num_stages = 3
num_warps = 8 if Lq == 64 else 16
stage = 3 if causal else 1
Expand Down Expand Up @@ -205,7 +205,8 @@ def forward(q, k, v, causal, sm_scale):
BLOCK_DMODEL=Lk, #
STAGE=stage, #
num_warps=num_warps, #
num_stages=num_stages #
num_stages=num_stages, #
grf_mode='large', #
)
return o

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