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paddlepaddle--paddle/test/quantization/test_stub.py
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2026-07-13 12:40:42 +08:00

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Python

# copyright (c) 2023 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 unittest
import paddle
from paddle.nn import Conv2D
from paddle.nn.quant import Stub
from paddle.quantization import QAT, QuantConfig
from paddle.quantization.quanters import FakeQuanterWithAbsMaxObserver
from paddle.quantization.quanters.abs_max import (
FakeQuanterWithAbsMaxObserverLayer,
)
quanter = FakeQuanterWithAbsMaxObserver(moving_rate=0.9)
class Model(paddle.nn.Layer):
def __init__(self, num_classes=10):
super().__init__()
self.quant_in = Stub()
self.conv = Conv2D(3, 6, 3, stride=1, padding=1)
self.quant = Stub(quanter)
self.quant_out = Stub()
def forward(self, inputs):
out = self.conv(inputs)
out = self.quant(out)
out = paddle.nn.functional.relu(out)
return self.quant_out(out)
class TestStub(unittest.TestCase):
def test_stub(self):
model = Model()
q_config = QuantConfig(activation=quanter, weight=quanter)
qat = QAT(q_config)
q_config.add_layer_config(model.quant_in, activation=None, weight=None)
quant_model = qat.quantize(model)
image = paddle.rand([1, 3, 32, 32], dtype="float32")
out = model(image)
out = quant_model(image)
out.backward()
quanter_count = 0
for _layer in quant_model.sublayers(True):
if isinstance(_layer, FakeQuanterWithAbsMaxObserverLayer):
quanter_count += 1
self.assertEqual(quanter_count, 5)
if __name__ == '__main__':
unittest.main()