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supports dynamic Cfp8 (#3767)
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Browse Source 
* supports dynamic Cfp8

* add unittest
This commit is contained in:
lzy
2025-09-08 11:41:29 +08:00
committed by GitHub
parent b5e20e3015
commit af49b81ffd
20 changed files with 1417 additions and 225 deletions
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18
fastdeploy/model_executor/layers/quantization/kv_cache.py
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@@ -33,6 +33,7 @@ class KvCacheQuantzationTypes(str, Enum):
INT8 = "int8"
FP8 = "float8_e4m3fn"
BLOCK_WISE_FP8 = "block_wise_fp8"
INT8_ZP = "int8_zp"
INT4_ZP = "int4_zp"
FP8_ZP = "float8_e4m3fn_zp"
@@ -62,7 +63,11 @@ class KvCacheQuantConfig(QuantConfigBase):
if self.quant_type == KvCacheQuantzationTypes.INT8 or self.quant_type == KvCacheQuantzationTypes.INT8_ZP:
self.max_bound = 127.0
elif self.quant_type == KvCacheQuantzationTypes.FP8 or self.quant_type == KvCacheQuantzationTypes.FP8_ZP:
elif (
self.quant_type == KvCacheQuantzationTypes.FP8
or self.quant_type == KvCacheQuantzationTypes.FP8_ZP
or self.quant_type == KvCacheQuantzationTypes.BLOCK_WISE_FP8
):
self.max_bound = 448.0
elif self.quant_type == KvCacheQuantzationTypes.INT4_ZP:
self.max_bound = 7.0
@@ -178,12 +183,17 @@ class KVCacheMethodBase(QuantMethodBase):
layer.cache_quant_type_str = "cache_int4_zp"
layer.quant_max_bound = 7.0
layer.quant_min_bound = -7.0
elif self.cache_quant_config.quant_type == KvCacheQuantzationTypes.BLOCK_WISE_FP8:
layer.cache_quant_type_str = "block_wise_fp8"
layer.quant_max_bound = 448.0
layer.quant_min_bound = -448.0
else:
raise NotImplementedError(f"{self.cache_quant_config.quant_type} is not implemented")
self.load_scale(layer, state_dict)
if self.cache_quant_config.has_zero_point:
self.load_zp(layer, state_dict)
if "block_wise" not in layer.cache_quant_type_str:
self.load_scale(layer, state_dict)
if self.cache_quant_config.has_zero_point:
self.load_zp(layer, state_dict)
def apply(self, layer):
"""