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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 os
import tempfile
import unittest
import numpy as np
import paddle
import paddle.nn.functional as F
from paddle.nn import Conv2D, Linear, ReLU, Sequential
from paddle.nn.quant.format import LinearDequanter, LinearQuanter
from paddle.quantization import PTQ, QuantConfig
from paddle.quantization.observers import AbsmaxObserver
from paddle.quantization.observers.abs_max import AbsmaxObserverLayer
class LeNetDygraph(paddle.nn.Layer):
def __init__(self, num_classes=10):
super().__init__()
self.num_classes = num_classes
self.features = Sequential(
Conv2D(1, 6, 3, stride=1, padding=1),
ReLU(),
paddle.nn.MaxPool2D(2, 2),
Conv2D(6, 16, 5, stride=1, padding=0),
ReLU(),
paddle.nn.MaxPool2D(2, 2),
)
if num_classes > 0:
self.fc = Sequential(
Linear(576, 120), Linear(120, 84), Linear(84, 10)
)
def forward(self, inputs):
x = self.features(inputs)
if self.num_classes > 0:
x = paddle.flatten(x, 1)
x = self.fc(x)
out = F.relu(x)
return out
class TestPTQ(unittest.TestCase):
def setUp(self):
self.temp_dir = tempfile.TemporaryDirectory()
self.path = os.path.join(self.temp_dir.name, 'ptq')
def tearDown(self):
self.temp_dir.cleanup()
def _get_model_for_ptq(self):
observer = AbsmaxObserver(quant_bits=8)
model = LeNetDygraph()
model.eval()
q_config = QuantConfig(activation=observer, weight=observer)
ptq = PTQ(q_config)
quant_model = ptq.quantize(model)
return quant_model, ptq
def _count_layers(self, model, layer_type):
count = 0
for _layer in model.sublayers(True):
if isinstance(_layer, layer_type):
count += 1
return count
def test_quantize(self):
ptq_model, _ = self._get_model_for_ptq()
image = paddle.rand([1, 1, 32, 32], dtype="float32")
out = ptq_model(image)
self.assertIsNotNone(out)
observer_count = self._count_layers(ptq_model, AbsmaxObserverLayer)
self.assertEqual(observer_count, 14)
def test_convert(self):
quant_model, ptq = self._get_model_for_ptq()
image = paddle.rand([1, 1, 32, 32], dtype="float32")
out = quant_model(image)
converted_model = ptq.convert(quant_model)
out = converted_model(image)
self.assertIsNotNone(out)
observer_count = self._count_layers(
converted_model, AbsmaxObserverLayer
)
quanter_count = self._count_layers(converted_model, LinearQuanter)
dequanter_count = self._count_layers(converted_model, LinearDequanter)
self.assertEqual(observer_count, 0)
self.assertEqual(dequanter_count, 14)
self.assertEqual(quanter_count, 9)
save_path = os.path.join(self.temp_dir.name, 'int8_infer')
paddle.jit.save(converted_model, save_path, [image])
paddle.enable_static()
exe = paddle.static.Executor(paddle.CPUPlace())
main_program = paddle.static.Program()
startup_program = paddle.static.Program()
with paddle.static.program_guard(main_program, startup_program):
[
inference_program,
feed_target_names,
fetch_targets,
] = paddle.static.load_inference_model(save_path, exe)
tensor_img = np.array(
np.random.random((1, 1, 32, 32)), dtype=np.float32
)
results = exe.run(
inference_program,
feed={feed_target_names[0]: tensor_img},
fetch_list=fetch_targets,
)
self.assertIsNotNone(results)
paddle.disable_static()
def test_convert_2times(self):
quant_model, ptq = self._get_model_for_ptq()
image = paddle.rand([1, 1, 32, 32], dtype="float32")
out = quant_model(image)
converted_model = ptq.convert(quant_model)
converted_model = ptq.convert(converted_model)
out = converted_model(image)
self.assertIsNotNone(out)
observer_count = self._count_layers(
converted_model, AbsmaxObserverLayer
)
quanter_count = self._count_layers(converted_model, LinearQuanter)
dequanter_count = self._count_layers(converted_model, LinearDequanter)
self.assertEqual(observer_count, 0)
self.assertEqual(dequanter_count, 14)
self.assertEqual(quanter_count, 9)
save_path = os.path.join(self.temp_dir.name, 'int8_infer')
paddle.jit.save(converted_model, save_path, [image])
paddle.enable_static()
exe = paddle.static.Executor(paddle.CPUPlace())
main_program = paddle.static.Program()
startup_program = paddle.static.Program()
with paddle.static.program_guard(main_program, startup_program):
[
inference_program,
feed_target_names,
fetch_targets,
] = paddle.static.load_inference_model(save_path, exe)
tensor_img = np.array(
np.random.random((1, 1, 32, 32)), dtype=np.float32
)
results = exe.run(
inference_program,
feed={feed_target_names[0]: tensor_img},
fetch_list=fetch_targets,
)
self.assertIsNotNone(results)
paddle.disable_static()
class TestPTQFP8(unittest.TestCase):
def setUp(self):
self.temp_dir = tempfile.TemporaryDirectory()
self.path = os.path.join(self.temp_dir.name, 'ptq')
def tearDown(self):
self.temp_dir.cleanup()
def _get_model_for_ptq(self):
weight_observer = AbsmaxObserver(quant_bits=(4, 3))
act_observer = AbsmaxObserver(quant_bits=(5, 2))
model = LeNetDygraph()
model.eval()
q_config = QuantConfig(activation=act_observer, weight=weight_observer)
ptq = PTQ(q_config)
quant_model = ptq.quantize(model)
return quant_model, ptq
def _count_layers(self, model, layer_type):
count = 0
for _layer in model.sublayers(True):
if isinstance(_layer, layer_type):
count += 1
return count
def test_quantize(self):
ptq_model, _ = self._get_model_for_ptq()
image = paddle.rand([1, 1, 32, 32], dtype="float32")
out = ptq_model(image)
self.assertIsNotNone(out)
observer_count = self._count_layers(ptq_model, AbsmaxObserverLayer)
self.assertEqual(observer_count, 14)
def test_convert(self):
quant_model, ptq = self._get_model_for_ptq()
image = paddle.rand([1, 1, 32, 32], dtype="float32")
out = quant_model(image)
converted_model = ptq.convert(quant_model)
out = converted_model(image)
self.assertIsNotNone(out)
observer_count = self._count_layers(
converted_model, AbsmaxObserverLayer
)
quanter_count = self._count_layers(converted_model, LinearQuanter)
dequanter_count = self._count_layers(converted_model, LinearDequanter)
self.assertEqual(observer_count, 0)
self.assertEqual(dequanter_count, 14)
self.assertEqual(quanter_count, 9)
save_path = os.path.join(self.temp_dir.name, 'int8_infer')
paddle.jit.save(converted_model, save_path, [image])
paddle.enable_static()
exe = paddle.static.Executor(paddle.CPUPlace())
main_program = paddle.static.Program()
startup_program = paddle.static.Program()
with paddle.static.program_guard(main_program, startup_program):
[
inference_program,
feed_target_names,
fetch_targets,
] = paddle.static.load_inference_model(save_path, exe)
tensor_img = np.array(
np.random.random((1, 1, 32, 32)), dtype=np.float32
)
results = exe.run(
inference_program,
feed={feed_target_names[0]: tensor_img},
fetch_list=fetch_targets,
)
self.assertIsNotNone(results)
paddle.disable_static()
def test_convert_2times(self):
quant_model, ptq = self._get_model_for_ptq()
image = paddle.rand([1, 1, 32, 32], dtype="float32")
out = quant_model(image)
converted_model = ptq.convert(quant_model)
converted_model = ptq.convert(converted_model)
out = converted_model(image)
self.assertIsNotNone(out)
observer_count = self._count_layers(
converted_model, AbsmaxObserverLayer
)
quanter_count = self._count_layers(converted_model, LinearQuanter)
dequanter_count = self._count_layers(converted_model, LinearDequanter)
self.assertEqual(observer_count, 0)
self.assertEqual(dequanter_count, 14)
self.assertEqual(quanter_count, 9)
save_path = os.path.join(self.temp_dir.name, 'int8_infer')
paddle.jit.save(converted_model, save_path, [image])
paddle.enable_static()
exe = paddle.static.Executor(paddle.CPUPlace())
main_program = paddle.static.Program()
startup_program = paddle.static.Program()
with paddle.static.program_guard(main_program, startup_program):
[
inference_program,
feed_target_names,
fetch_targets,
] = paddle.static.load_inference_model(save_path, exe)
tensor_img = np.array(
np.random.random((1, 1, 32, 32)), dtype=np.float32
)
results = exe.run(
inference_program,
feed={feed_target_names[0]: tensor_img},
fetch_list=fetch_targets,
)
self.assertIsNotNone(results)
paddle.disable_static()
if __name__ == '__main__':
unittest.main()