Add QuantizedMatmul in QAT (#47997)

python/paddle/fluid/contrib/slim/tests/CMakeLists.txt

@@ -253,6 +253,8 @@ if(WIN32)
   list(REMOVE_ITEM TEST_OPS test_quantize_transpiler_v2)
   list(REMOVE_ITEM TEST_OPS test_imperative_qat_amp)
   list(REMOVE_ITEM TEST_OPS test_imperative_qat_lsq)
+  list(REMOVE_ITEM TEST_OPS test_imperative_qat_matmul)
+
 endif()
 
 if(LINUX AND WITH_MKLDNN)
@@ -507,6 +509,7 @@ if(WIN32)
       test_imperative_qat_channelwise
       test_imperative_qat
       test_imperative_qat_lsq
+      test_imperative_qat_matmul
       test_imperative_out_scale
       test_graph)
   list(REMOVE_ITEM TEST_OPS ${SINGLE_CARD_TEST_OPS})
@@ -547,6 +550,7 @@ set_tests_properties(test_imperative_qat_fuse PROPERTIES TIMEOUT 200)
 set_tests_properties(test_imperative_out_scale PROPERTIES TIMEOUT 200)
 set_tests_properties(test_imperative_qat_user_defined PROPERTIES TIMEOUT 200)
 set_tests_properties(test_imperative_qat_lsq PROPERTIES TIMEOUT 300)
+set_tests_properties(test_imperative_qat_matmul PROPERTIES TIMEOUT 300)
 
 if(LINUX AND WITH_MKLDNN)
   set_tests_properties(test_quant2_int8_mobilenetv1_mkldnn PROPERTIES TIMEOUT

python/paddle/fluid/contrib/slim/tests/test_imperative_qat_matmul.py

@@ -0,0 +1,234 @@
+#   copyright (c) 2022 paddlepaddle authors. all rights reserved.
+#
+# licensed under the apache license, version 2.0 (the "license");
+# you may not use this file except in compliance with the license.
+# you may obtain a copy of the license at
+#
+#     http://www.apache.org/licenses/license-2.0
+#
+# unless required by applicable law or agreed to in writing, software
+# distributed under the license is distributed on an "as is" basis,
+# without warranties or conditions of any kind, either express or implied.
+# see the license for the specific language governing permissions and
+# limitations under the license.
+
+import os
+import numpy as np
+import random
+import time
+import tempfile
+import unittest
+import logging
+
+import paddle
+import paddle.fluid as fluid
+from paddle.fluid import core
+from paddle.fluid.optimizer import (
+    SGDOptimizer,
+    AdamOptimizer,
+    MomentumOptimizer,
+)
+from paddle.fluid.contrib.slim.quantization import ImperativeQuantAware
+from paddle.nn import Sequential
+from paddle.nn import ReLU, ReLU6, LeakyReLU, Sigmoid, Softmax, PReLU
+from paddle.nn import Linear, Conv2D, Softmax, BatchNorm2D, MaxPool2D
+from paddle.fluid.log_helper import get_logger
+from paddle.fluid.dygraph.io import INFER_MODEL_SUFFIX, INFER_PARAMS_SUFFIX
+from paddle.nn.quant.quant_layers import (
+    QuantizedConv2D,
+    QuantizedMatmul,
+)
+from paddle.fluid.framework import _test_eager_guard
+from imperative_test_utils import fix_model_dict
+
+paddle.enable_static()
+
+os.environ["CPU_NUM"] = "1"
+if core.is_compiled_with_cuda():
+    fluid.set_flags({"FLAGS_cudnn_deterministic": True})
+
+_logger = get_logger(
+    __name__, logging.INFO, fmt='%(asctime)s-%(levelname)s: %(message)s'
+)
+
+
+class ImperativeLenet(fluid.dygraph.Layer):
+    def __init__(self, num_classes=10):
+        super().__init__()
+        conv2d_w1_attr = fluid.ParamAttr(name="conv2d_w_1")
+        conv2d_w2_attr = fluid.ParamAttr(name="conv2d_w_2")
+        fc_w1_attr = fluid.ParamAttr(name="fc_w_1")
+        fc_w2_attr = fluid.ParamAttr(name="fc_w_2")
+        fc_w3_attr = fluid.ParamAttr(name="fc_w_3")
+        conv2d_b2_attr = fluid.ParamAttr(name="conv2d_b_2")
+        fc_b1_attr = fluid.ParamAttr(name="fc_b_1")
+        fc_b2_attr = fluid.ParamAttr(name="fc_b_2")
+        fc_b3_attr = fluid.ParamAttr(name="fc_b_3")
+        self.features = Sequential(
+            Conv2D(
+                in_channels=1,
+                out_channels=6,
+                kernel_size=3,
+                stride=1,
+                padding=1,
+                weight_attr=conv2d_w1_attr,
+                bias_attr=False,
+            ),
+            BatchNorm2D(6),
+            ReLU(),
+            MaxPool2D(kernel_size=2, stride=2),
+            Conv2D(
+                in_channels=6,
+                out_channels=16,
+                kernel_size=5,
+                stride=1,
+                padding=0,
+                weight_attr=conv2d_w2_attr,
+                bias_attr=conv2d_b2_attr,
+            ),
+            BatchNorm2D(16),
+            PReLU(),
+            MaxPool2D(kernel_size=2, stride=2),
+        )
+        self.matmul = QuantizedMatmul()
+        self.fc = Sequential(
+            Linear(
+                in_features=400,
+                out_features=120,
+                weight_attr=fc_w1_attr,
+                bias_attr=fc_b1_attr,
+            ),
+            LeakyReLU(),
+            Linear(
+                in_features=120,
+                out_features=84,
+                weight_attr=fc_w2_attr,
+                bias_attr=fc_b2_attr,
+            ),
+            Sigmoid(),
+            Linear(
+                in_features=84,
+                out_features=num_classes,
+                weight_attr=fc_w3_attr,
+                bias_attr=fc_b3_attr,
+            ),
+            Softmax(),
+        )
+
+    def forward(self, inputs):
+        inputs = self.features(inputs)
+        inputs = self.matmul(inputs, inputs, transpose_y=True)
+        inputs = paddle.flatten(inputs, 1)
+        x = self.fc(inputs)
+        return x
+
+
+class TestImperativeQatMatmul(unittest.TestCase):
+    def set_vars(self):
+        self.weight_quantize_type = 'abs_max'
+        self.activation_quantize_type = 'moving_average_abs_max'
+        self.onnx_format = True
+        self.fuse_conv_bn = False
+
+    def func_qat(self):
+        self.set_vars()
+
+        imperative_qat = ImperativeQuantAware(
+            weight_quantize_type=self.weight_quantize_type,
+            activation_quantize_type=self.activation_quantize_type,
+            fuse_conv_bn=self.fuse_conv_bn,
+        )
+
+        seed = 100
+        np.random.seed(seed)
+        fluid.default_main_program().random_seed = seed
+        fluid.default_startup_program().random_seed = seed
+        paddle.disable_static()
+        lenet = ImperativeLenet()
+        lenet = fix_model_dict(lenet)
+        imperative_qat.quantize(lenet)
+
+        optimizer = MomentumOptimizer(
+            learning_rate=0.1, parameter_list=lenet.parameters(), momentum=0.9
+        )
+
+        train_reader = paddle.batch(
+            paddle.dataset.mnist.train(), batch_size=64, drop_last=True
+        )
+        test_reader = paddle.batch(paddle.dataset.mnist.test(), batch_size=32)
+        epoch_num = 1
+        for epoch in range(epoch_num):
+            lenet.train()
+            for batch_id, data in enumerate(train_reader()):
+                x_data = np.array(
+                    [x[0].reshape(1, 28, 28) for x in data]
+                ).astype('float32')
+                y_data = (
+                    np.array([x[1] for x in data])
+                    .astype('int64')
+                    .reshape(-1, 1)
+                )
+
+                img = fluid.dygraph.to_variable(x_data)
+                label = fluid.dygraph.to_variable(y_data)
+                out = lenet(img)
+                acc = paddle.static.accuracy(out, label)
+                loss = fluid.layers.cross_entropy(out, label)
+                avg_loss = paddle.mean(loss)
+
+                avg_loss.backward()
+                optimizer.minimize(avg_loss)
+                lenet.clear_gradients()
+
+                if batch_id % 100 == 0:
+                    _logger.info(
+                        "Train | At epoch {} step {}: loss = {:}, acc= {:}".format(
+                            epoch, batch_id, avg_loss.numpy(), acc.numpy()
+                        )
+                    )
+
+            lenet.eval()
+            eval_acc_top1_list = []
+            with paddle.no_grad():
+                for batch_id, data in enumerate(test_reader()):
+
+                    x_data = np.array(
+                        [x[0].reshape(1, 28, 28) for x in data]
+                    ).astype('float32')
+                    y_data = (
+                        np.array([x[1] for x in data])
+                        .astype('int64')
+                        .reshape(-1, 1)
+                    )
+                    img = fluid.dygraph.to_variable(x_data)
+                    label = fluid.dygraph.to_variable(y_data)
+
+                    out = lenet(img)
+                    acc_top1 = paddle.static.accuracy(
+                        input=out, label=label, k=1
+                    )
+                    acc_top5 = paddle.static.accuracy(
+                        input=out, label=label, k=5
+                    )
+
+                    if batch_id % 100 == 0:
+                        eval_acc_top1_list.append(float(acc_top1.numpy()))
+                        _logger.info(
+                            "Test | At epoch {} step {}: acc1 = {:}, acc5 = {:}".format(
+                                epoch,
+                                batch_id,
+                                acc_top1.numpy(),
+                                acc_top5.numpy(),
+                            )
+                        )
+
+            # check eval acc
+            eval_acc_top1 = sum(eval_acc_top1_list) / len(eval_acc_top1_list)
+            print('eval_acc_top1', eval_acc_top1)
+
+    def test_qat(self):
+        self.func_qat()
+
+
+if __name__ == '__main__':
+    unittest.main()

python/paddle/nn/quant/quant_layers.py

@@ -39,6 +39,7 @@
     'QuantStub',
     'QuantizedRowParallelLinear',
     'QuantizedColumnParallelLinear',
+    'QuantizedMatmul',
 ]
 
 _logger = get_logger(
@@ -999,6 +1000,65 @@ def forward(self, input):
         return output
 
 
+class QuantizedMatmul(Layer):
+    """
+    The computational logic of QuantizedMatmul is the same with Matmul.
+    The only difference is that its inputs are all fake quantized.
+    """
+
+    def __init__(
+        self,
+        layer=None,
+        weight_bits=8,
+        activation_bits=8,
+        moving_rate=0.9,
+        weight_quantize_type='abs_max',
+        activation_quantize_type='abs_max',
+        weight_pre_layer=None,
+        act_pre_layer=None,
+        weight_quant_layer=None,
+        act_quant_layer=None,
+    ):
+        super().__init__()
+
+        # For FakeQuant
+        if act_quant_layer is not None:
+            self._fake_quant_x = act_quant_layer()
+            self._fake_quant_y = act_quant_layer()
+        else:
+            self._fake_quant_x = _get_fake_quant_type(
+                activation_quantize_type,
+                moving_rate=moving_rate,
+                quant_bits=activation_bits,
+                quant_on_weight=False,
+            )
+            self._fake_quant_y = _get_fake_quant_type(
+                activation_quantize_type,
+                moving_rate=moving_rate,
+                quant_bits=activation_bits,
+                quant_on_weight=False,
+            )
+
+        self._act_preprocess_x = (
+            act_pre_layer() if act_pre_layer is not None else None
+        )
+        self._act_preprocess_y = (
+            act_pre_layer() if act_pre_layer is not None else None
+        )
+
+    def forward(self, x, y, transpose_x=False, transpose_y=False, name=None):
+        if self._act_preprocess_x is not None:
+            x = self._act_preprocess_x(x)
+        quant_x = self._fake_quant_x(x)
+
+        if self._act_preprocess_y is not None:
+            y = self._act_preprocess_y(y)
+        quant_y = self._fake_quant_y(y)
+
+        out = paddle.matmul(quant_x, quant_y, transpose_x, transpose_y, name)
+        return out
+
+
 class MAOutputScaleLayer(Layer):
     """
     Add MovingAverageMaxScale layer to the behind of the input layer.