Source code for torch.ao.quantization
# flake8: noqa: F403
from .fake_quantize import * # noqa: F403
from .fuse_modules import fuse_modules # noqa: F403
from .fuse_modules import fuse_modules_qat # noqa: F403
from .fuser_method_mappings import * # noqa: F403
from .observer import * # noqa: F403
from .qconfig import * # noqa: F403
from .qconfig_mapping import * # noqa: F403
from .quant_type import * # noqa: F403
from .quantization_mappings import * # type: ignore[no-redef]
from .quantize import * # noqa: F403
from .quantize_jit import * # noqa: F403
from .stubs import * # noqa: F403
from .pt2e.eval_utils import _move_exported_model_to_eval as move_exported_model_to_eval
from .pt2e.generate_numeric_debug_handle import generate_numeric_debug_handle # noqa: F401
from typing import Union, List, Callable, Tuple, Optional
from torch import Tensor
import torch
ObserverOrFakeQuantize = Union[ObserverBase, FakeQuantizeBase]
ObserverOrFakeQuantize.__module__ = "torch.ao.quantization"
__all__ = [
"DeQuantStub",
"FakeQuantize",
"FakeQuantizeBase",
"FixedQParamsFakeQuantize",
"FixedQParamsObserver",
"FusedMovingAvgObsFakeQuantize",
"HistogramObserver",
"MatchAllNode",
"MinMaxObserver",
"MovingAverageMinMaxObserver",
"MovingAveragePerChannelMinMaxObserver",
"NoopObserver",
"ObserverBase",
"ObserverOrFakeQuantize",
"Pattern",
"PerChannelMinMaxObserver",
"PlaceholderObserver",
"QConfig",
"QConfigAny",
"QConfigDynamic",
"QConfigMapping",
"QuantStub",
"QuantType",
"QuantWrapper",
"RecordingObserver",
"ReuseInputObserver",
"UniformQuantizationObserverBase",
"add_quant_dequant",
"convert",
"convert_dynamic_jit",
"convert_jit",
"default_affine_fixed_qparams_fake_quant",
"default_affine_fixed_qparams_observer",
"default_debug_observer",
"default_dynamic_fake_quant",
"default_dynamic_quant_observer",
"default_embedding_fake_quant",
"default_embedding_fake_quant_4bit",
"default_eval_fn",
"default_fake_quant",
"default_fixed_qparams_range_0to1_fake_quant",
"default_fixed_qparams_range_0to1_observer",
"default_fixed_qparams_range_neg1to1_fake_quant",
"default_fixed_qparams_range_neg1to1_observer",
"default_float_qparams_observer",
"default_float_qparams_observer_4bit",
"default_fused_act_fake_quant",
"default_fused_per_channel_wt_fake_quant",
"default_fused_wt_fake_quant",
"default_histogram_fake_quant",
"default_histogram_observer",
"default_observer",
"default_per_channel_weight_fake_quant",
"default_per_channel_weight_observer",
"default_placeholder_observer",
"default_reuse_input_observer",
"default_symmetric_fixed_qparams_fake_quant",
"default_symmetric_fixed_qparams_observer",
"default_weight_fake_quant",
"default_weight_observer",
"disable_fake_quant",
"disable_observer",
"enable_fake_quant",
"enable_observer",
"fuse_conv_bn",
"fuse_conv_bn_jit",
"fuse_conv_bn_relu",
"fuse_convtranspose_bn",
"fuse_linear_bn",
"fuse_modules",
"fuse_modules_qat",
"fused_per_channel_wt_fake_quant_range_neg_127_to_127",
"fused_wt_fake_quant_range_neg_127_to_127",
"get_combined_dict",
"get_default_compare_output_module_list",
"get_default_custom_config_dict",
"get_default_dynamic_quant_module_mappings",
"get_default_dynamic_sparse_quant_module_mappings",
"get_default_float_to_quantized_operator_mappings",
"get_default_qat_module_mappings",
"get_default_qat_qconfig",
"get_default_qat_qconfig_dict",
"get_default_qat_qconfig_mapping",
"get_default_qconfig",
"get_default_qconfig_dict",
"get_default_qconfig_mapping",
"get_default_qconfig_propagation_list",
"get_default_static_quant_module_mappings",
"get_default_static_quant_reference_module_mappings",
"get_default_static_sparse_quant_module_mappings",
"get_dynamic_quant_module_class",
"get_embedding_qat_module_mappings",
"get_embedding_static_quant_module_mappings",
"get_fuser_method",
"get_fuser_method_new",
"get_observer_state_dict",
"get_quantized_operator",
"get_static_quant_module_class",
"load_observer_state_dict",
"move_exported_model_to_eval",
"no_observer_set",
"per_channel_weight_observer_range_neg_127_to_127",
"prepare",
"prepare_dynamic_jit",
"prepare_jit",
"prepare_qat",
"propagate_qconfig_",
"qconfig_equals",
"quantize",
"quantize_dynamic",
"quantize_dynamic_jit",
"quantize_jit",
"quantize_qat",
"script_qconfig",
"script_qconfig_dict",
"swap_module",
"weight_observer_range_neg_127_to_127",
"generate_numeric_debug_handle",
]
[docs]def default_eval_fn(model, calib_data):
r"""Define the default evaluation function.
Default evaluation function takes a torch.utils.data.Dataset or a list of
input Tensors and run the model on the dataset
"""
for data, target in calib_data:
model(data)
class _DerivedObserverOrFakeQuantize(ObserverBase):
r"""This observer is used to describe an observer whose quantization parameters
are derived from other observers
"""
def __init__(
self,
dtype: torch.dtype,
obs_or_fqs: List[ObserverOrFakeQuantize],
derive_qparams_fn: Callable[[List[ObserverOrFakeQuantize]], Tuple[Tensor, Tensor]],
quant_min: Optional[int]=None,
quant_max: Optional[int]=None,
qscheme: Optional[torch.qscheme]=None,
ch_axis: Optional[int] = None
):
super().__init__(dtype)
self.obs_or_fqs = obs_or_fqs
self.derive_qparams_fn = derive_qparams_fn
self.quant_min = quant_min
self.quant_max = quant_max
self.qscheme = qscheme
self.ch_axis = ch_axis
from .utils import is_per_channel
if is_per_channel(self.qscheme):
assert self.ch_axis is not None, "Must provide a valid ch_axis if qscheme is per channel"
def forward(self, x: Tensor) -> Tensor:
return x
def calculate_qparams(self):
return self.derive_qparams_fn(self.obs_or_fqs)
