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[fix] reduce dp capture bs #5634

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Merged
merged 2 commits into from
Apr 22, 2025
Merged

[fix] reduce dp capture bs #5634

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ada72d4
[fix] mem_fraction_static for deepseekv3 dp8 on h200
Apr 22, 2025
5a80fa9
[fix] reduce dp capture bs
Apr 22, 2025
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27 changes: 15 additions & 12 deletions python/sglang/srt/server_args.py
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Original file line number Diff line number Diff line change
Expand Up @@ -223,20 +223,23 @@ def __post_init__(self):

# Set mem fraction static, which depends on the tensor parallelism size
if self.mem_fraction_static is None:
if gpu_mem <= 81920:
if self.tp_size >= 16:
self.mem_fraction_static = 0.79
elif self.tp_size >= 8:
self.mem_fraction_static = 0.81
elif self.tp_size >= 4:
self.mem_fraction_static = 0.85
elif self.tp_size >= 2:
self.mem_fraction_static = 0.87
else:
self.mem_fraction_static = 0.88
if self.tp_size >= 16:
self.mem_fraction_static = 0.79
elif self.tp_size >= 8:
self.mem_fraction_static = 0.81
elif self.tp_size >= 4:
self.mem_fraction_static = 0.85
elif self.tp_size >= 2:
self.mem_fraction_static = 0.87
else:
self.mem_fraction_static = 0.88
if gpu_mem > 81920:
# FIXME: more fine grained auto-selection polices
self.mem_fraction_static = (gpu_mem - 1024 * 13) / gpu_mem
mem_fraction = self.mem_fraction_static
self.mem_fraction_static = min(
mem_fraction + 40960 * (1 - mem_fraction) / gpu_mem,
(gpu_mem - 1024 * 13) / gpu_mem,
)

# Set chunked prefill size, which depends on the gpu memory capacity
if self.chunked_prefill_size is None:
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