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https://github.com/kvcache-ai/ktransformers.git
synced 2026-04-20 14:29:22 +00:00
@@ -15,6 +15,14 @@ except (ImportError, AttributeError):
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_HAS_AMX_SUPPORT = False
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AMXInt4_MOE, AMXInt8_MOE, AMXInt4_KGroup_MOE, AMXFP8_MOE, AMXBF16_MOE = None, None, None, None, None
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try:
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from kt_kernel_ext.moe import AMXFP8PerChannel_MOE
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_HAS_FP8_PERCHANNEL_SUPPORT = True
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except (ImportError, AttributeError):
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_HAS_FP8_PERCHANNEL_SUPPORT = False
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AMXFP8PerChannel_MOE = None
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from typing import Optional
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@@ -304,7 +312,7 @@ class AMXMoEWrapper(BaseMoEWrapper):
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class NativeMoEWrapper(BaseMoEWrapper):
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"""Wrapper for RAWINT4/FP8/BF16 experts stored in compressed SafeTensor format."""
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"""Wrapper for RAWINT4/FP8/FP8_PERCHANNEL/BF16 experts stored in compressed SafeTensor format."""
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_native_loader_instance = None
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@@ -330,6 +338,8 @@ class NativeMoEWrapper(BaseMoEWrapper):
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raise RuntimeError("AMX backend with RAWINT4 support is not available.")
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if method == "FP8" and AMXFP8_MOE is None:
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raise RuntimeError("AMX backend with FP8 support is not available.")
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if method == "FP8_PERCHANNEL" and not _HAS_FP8_PERCHANNEL_SUPPORT:
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raise RuntimeError("AMX backend with FP8 per-channel support is not available.")
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if method == "BF16" and AMXBF16_MOE is None:
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raise RuntimeError("AMX backend with BF16 support is not available.")
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@@ -354,6 +364,9 @@ class NativeMoEWrapper(BaseMoEWrapper):
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NativeMoEWrapper._native_loader_instance = CompressedSafeTensorLoader(weight_path)
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elif method == "FP8":
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NativeMoEWrapper._native_loader_instance = FP8SafeTensorLoader(weight_path)
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elif method == "FP8_PERCHANNEL":
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# Use FP8SafeTensorLoader with per-channel scale format
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NativeMoEWrapper._native_loader_instance = FP8SafeTensorLoader(weight_path, scale_suffix="weight_scale")
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elif method == "BF16":
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NativeMoEWrapper._native_loader_instance = BF16SafeTensorLoader(weight_path)
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else:
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@@ -408,6 +421,8 @@ class NativeMoEWrapper(BaseMoEWrapper):
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assert self.gate_scales[0].dtype == torch.bfloat16, "Expected bf16 scales for RAWINT4"
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elif self.method == "FP8":
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assert self.gate_scales[0].dtype == torch.float32, "Expected float32 scales for FP8"
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elif self.method == "FP8_PERCHANNEL":
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assert self.gate_scales[0].dtype == torch.float32, "Expected float32 scales for FP8_PERCHANNEL"
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t2 = time.time()
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@@ -462,6 +477,11 @@ class NativeMoEWrapper(BaseMoEWrapper):
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moe_config.quant_config.group_size = 128
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moe_config.quant_config.zero_point = False
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self.moe = AMXFP8_MOE(moe_config)
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elif self.method == "FP8_PERCHANNEL":
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moe_config.quant_config.bits = 8
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moe_config.quant_config.per_channel = True
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moe_config.quant_config.zero_point = False
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self.moe = AMXFP8PerChannel_MOE(moe_config)
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elif self.method == "BF16":
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# BF16 has no quantization config needed
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self.moe = AMXBF16_MOE(moe_config)
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