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can_scale: check that the attention is flashinfer

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Daniël de Kok 2024-10-24 12:35:30 +00:00
parent 1f18cb6aa6
commit a68fae05e9
1 changed files with 6 additions and 2 deletions
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8
server/text_generation_server/layers/attention/kv_cache.py
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@ -110,7 +110,11 @@ class KVCache:
"""Check if the cache can be scaled by the given scales.""" """Check if the cache can be scaled by the given scales."""
if kv_scales.key_scale_cpu == 1.0 and kv_scales.value_scale_cpu == 1.0: if kv_scales.key_scale_cpu == 1.0 and kv_scales.value_scale_cpu == 1.0:
return False return False
elif self.dtype == torch.float8_e4m3fn and SYSTEM == "cuda": elif (
self.dtype == torch.float8_e4m3fn
and ATTENTION == "flashinfer"
and SYSTEM == "cuda"
):
log_once( log_once(
logger.info, logger.info,
"Using FP8 KV cache scales", "Using FP8 KV cache scales",
@ -120,7 +124,7 @@ class KVCache:
# We have scales, but not the correct FP8 cache type, so warn once. # We have scales, but not the correct FP8 cache type, so warn once.
log_once( log_once(
logger.info, logger.info,
"Ignoring FP8 KV cache scales, only float8_e4m3fn KV cache on CUDA is supported", "Ignoring FP8 KV cache scales, only float8_e4m3fn KV cache on flashinfer is supported",
) )
return False return False