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Fix set kv cache multi-stream (#5975)

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This commit is contained in:
Ke Bao
2025-05-03 00:26:00 +08:00
committed by GitHub
parent 97ac42b634
commit 6579cd7daf
1 changed files with 2 additions and 2 deletions
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python/sglang/srt/mem_cache/memory_pool.py
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@@ -374,9 +374,9 @@ class MHATokenToKVPool(KVCache):
# Overlap the copy of K and V cache for small batch size
current_stream = self.device_module.current_stream()
self.alt_stream.wait_stream(current_stream)
self.k_buffer[layer_id - self.start_layer][loc] = cache_k
with self.device_module.stream(self.alt_stream):
self.k_buffer[layer_id - self.start_layer][loc] = cache_k
self.v_buffer[layer_id - self.start_layer][loc] = cache_v
self.v_buffer[layer_id - self.start_layer][loc] = cache_v
current_stream.wait_stream(self.alt_stream)
else:
self.k_buffer[layer_id - self.start_layer][loc] = cache_k