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3a02873183
All quantization-related modules are being migrated to `torch.ao`. This migrates the `nn.intrinsic.quantized`. Please, see the [tracker](https://github.com/pytorch/pytorch/issues/81667) for the timeline. ``` python test/test_quantization.py -- TestAOMigrationNNIntrinsic ``` Internal: ``` buck2 test @mode/dev-nosan //caffe2/test:quantization -- TestAOMigrationNNIntrinsic ``` Differential Revision: [D39425515](https://our.internmc.facebook.com/intern/diff/D39425515/) Differential Revision: [D39425515](https://our.internmc.facebook.com/intern/diff/D39425515) Pull Request resolved: https://github.com/pytorch/pytorch/pull/86172 Approved by: https://github.com/jerryzh168
102 lines
3.8 KiB
Python
102 lines
3.8 KiB
Python
import torch
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import torch.ao.nn.intrinsic as nni
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class _BatchNorm(torch.nn.modules.batchnorm._BatchNorm):
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def __init__(self, num_features, eps=1e-5, momentum=0.1, device=None, dtype=None) -> None:
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factory_kwargs = {'device': device, 'dtype': dtype}
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super().__init__(num_features, eps, momentum, True, True, **factory_kwargs)
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self.register_buffer('scale', torch.tensor(1.0, **factory_kwargs))
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self.register_buffer('zero_point', torch.tensor(0, **factory_kwargs))
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@staticmethod
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def from_float(cls, mod):
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activation_post_process = mod.activation_post_process
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if type(mod) == cls._NNI_BN_RELU_MODULE:
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mod = mod[0]
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scale, zero_point = activation_post_process.calculate_qparams()
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new_mod = cls(mod.num_features, mod.eps)
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new_mod.weight = mod.weight
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new_mod.bias = mod.bias
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new_mod.running_mean = mod.running_mean
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new_mod.running_var = mod.running_var
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new_mod.scale = scale
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new_mod.zero_point = zero_point
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return new_mod
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@classmethod
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def from_reference(cls, bn, output_scale, output_zero_point):
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qbn = cls(
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bn.num_features,
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bn.eps,
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bn.momentum,
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device=bn.weight.device,
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dtype=bn.weight.dtype
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)
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qbn.weight = bn.weight
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qbn.bias = bn.bias
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qbn.running_mean = bn.running_mean
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qbn.running_var = bn.running_var
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qbn.scale = output_scale
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qbn.zero_point = output_zero_point
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return qbn
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class BatchNorm2d(_BatchNorm):
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r"""This is the quantized version of :class:`~torch.nn.BatchNorm2d`.
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"""
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_NNI_BN_RELU_MODULE = nni.BNReLU2d
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def __init__(self, num_features, eps=1e-5, momentum=0.1, device=None, dtype=None) -> None:
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factory_kwargs = {'device': device, 'dtype': dtype}
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super().__init__(num_features, eps, momentum, **factory_kwargs)
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def _get_name(self):
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return 'QuantizedBatchNorm2d'
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def _check_input_dim(self, input):
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# Temporarily using len(shape) instead of ndim due to JIT issue
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# https://github.com/pytorch/pytorch/issues/23890
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if len(input.shape) != 4:
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raise ValueError("Input shape must be `(N, C, H, W)`!")
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def forward(self, input: torch.Tensor) -> torch.Tensor:
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# disabling this since this is not symbolically traceable
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# self._check_input_dim(input)
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return torch.ops.quantized.batch_norm2d(
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input, self.weight, self.bias, self.running_mean,
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self.running_var, self.eps, self.scale, self.zero_point)
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@classmethod
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def from_float(cls, mod):
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return _BatchNorm.from_float(cls, mod)
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class BatchNorm3d(_BatchNorm):
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r"""This is the quantized version of :class:`~torch.nn.BatchNorm3d`.
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"""
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_NNI_BN_RELU_MODULE = nni.BNReLU3d
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def __init__(self, num_features, eps=1e-5, momentum=0.1, device=None, dtype=None):
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factory_kwargs = {'device': device, 'dtype': dtype}
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super().__init__(num_features, eps, momentum, **factory_kwargs)
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def _get_name(self):
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return 'QuantizedBatchNorm3d'
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def _check_input_dim(self, input):
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# Temporarily using len(shape) instead of ndim due to JIT issue
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# https://github.com/pytorch/pytorch/issues/23890
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if len(input.shape) != 5:
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raise ValueError("Input shape must be `(N, C, H, W)`!")
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def forward(self, input: torch.Tensor) -> torch.Tensor:
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# disabling this since this is not symbolically traceable
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# self._check_input_dim(input)
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return torch.ops.quantized.batch_norm3d(
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input, self.weight, self.bias, self.running_mean,
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self.running_var, self.eps, self.scale, self.zero_point)
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@classmethod
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def from_float(cls, mod):
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return _BatchNorm.from_float(cls, mod)
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