mirror of https://github.com/vladmandic/automatic
80 lines
3.2 KiB
Python
80 lines
3.2 KiB
Python
# pylint: disable=relative-beyond-top-level,redefined-builtin,protected-access
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from typing import List
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import torch
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from ...common import use_torch_compile # noqa: TID252
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from ...packed_int import unpack_int_symetric # noqa: TID252
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from ...dequantizer import dequantize_symmetric, dequantize_symmetric_with_bias # noqa: TID252
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from ..linear.linear_int8 import quantize_int8_matmul_input # noqa: TID252
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from .forward import get_conv_args, process_conv_input
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def conv_int8_matmul(
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input: torch.FloatTensor,
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weight: torch.CharTensor,
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bias: torch.FloatTensor,
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scale: torch.FloatTensor,
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quantized_weight_shape: torch.Size,
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result_shape: torch.Size,
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weights_dtype: str,
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reversed_padding_repeated_twice: List[int],
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padding_mode: str, conv_type: int,
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groups: int, stride: List[int],
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padding: List[int], dilation: List[int],
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) -> torch.FloatTensor:
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return_dtype = input.dtype
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input, mm_output_shape = process_conv_input(conv_type, input, reversed_padding_repeated_twice, padding_mode, result_shape, stride, padding, dilation)
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input, scale = quantize_int8_matmul_input(input, scale)
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if quantized_weight_shape is not None:
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weight = unpack_int_symetric(weight, quantized_weight_shape, weights_dtype, dtype=torch.int8)
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if groups == 1:
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result = torch._int_mm(input, weight)
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else:
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weight = weight.view(weight.shape[0], groups, weight.shape[1] // groups)
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input = input.view(input.shape[0], groups, input.shape[1] // groups)
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result = []
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for i in range(groups):
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result.append(torch._int_mm(input[:, i], weight[:, i]))
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result = torch.cat(result, dim=-1)
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if bias is not None:
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result = dequantize_symmetric_with_bias(result, scale, bias, return_dtype, mm_output_shape)
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else:
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result = dequantize_symmetric(result, scale, return_dtype, mm_output_shape)
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if conv_type == 1:
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result = result.transpose_(1,2)
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elif conv_type == 2:
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result = result.permute(0,3,1,2)
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elif conv_type == 3:
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result = result.permute(0,4,1,2,3)
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return result
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def quantized_conv_forward_int8_matmul(self, input) -> torch.FloatTensor:
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if torch.numel(input) / input.shape[2] < 32:
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return self._conv_forward(input, self.sdnq_dequantizer(self.weight, skip_quantized_matmul=True), self.bias)
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conv_type, stride, padding, dilation = get_conv_args(input.ndim, self.stride, self.padding, self.dilation)
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if self.sdnq_dequantizer.re_quantize_for_matmul:
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weight, scale = self.sdnq_dequantizer.re_quantize_matmul(self.weight)
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quantized_weight_shape = None
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else:
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weight = self.weight
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scale = self.sdnq_dequantizer.scale
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quantized_weight_shape = getattr(self.sdnq_dequantizer, "quantized_weight_shape", None)
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return conv_int8_matmul(
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input, weight, self.bias,
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scale, quantized_weight_shape,
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self.sdnq_dequantizer.result_shape,
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self.sdnq_dequantizer.weights_dtype,
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self._reversed_padding_repeated_twice,
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self.padding_mode, conv_type,
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self.groups, stride, padding, dilation,
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)
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if use_torch_compile:
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conv_int8_matmul = torch.compile(conv_int8_matmul, fullgraph=True, dynamic=False)
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