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2026-07-13 12:40:42 +08:00

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Python

# 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 tempfile
import unittest
from functools import partial
import numpy as np
from op_test_ipu import IPUD2STest
import paddle
from paddle.jit import to_static
from paddle.jit.dy2static.program_translator import ProgramCache
from paddle.optimizer.lr import LRScheduler
class SimpleLayer(paddle.nn.Layer):
def __init__(
self,
loss_op=None,
use_softmax=True,
use_reduction=True,
use_identity_loss=True,
):
super().__init__()
self.loss_op = loss_op
self.conv = paddle.nn.Conv2D(
in_channels=3, out_channels=1, kernel_size=2, stride=1
)
self.use_softmax = use_softmax
self.use_reduction = use_reduction
self.use_identity_loss = use_identity_loss
@to_static(full_graph=True)
def forward(self, x, target=None):
x = self.conv(x)
x = paddle.flatten(x, 1, -1)
if target is not None:
if self.use_softmax:
x = paddle.nn.functional.softmax(x)
loss = paddle.nn.functional.cross_entropy(
x, target, reduction='none', use_softmax=False
)
if self.use_reduction:
loss = paddle.mean(loss)
if self.use_identity_loss:
loss = paddle.incubate.identity_loss(loss, 1)
return x, loss
return x
class TestBase(IPUD2STest):
def setUp(self):
self.set_op_attrs()
self.set_data_feed()
def set_op_attrs(self):
pass
def set_data_feed(self):
self.data = paddle.uniform((8, 3, 10, 10), dtype='float32')
self.label = paddle.randint(0, 10, shape=[8], dtype='int64')
def create_model(self, use_ipu=False):
return SimpleLayer(
loss_op=self.loss_op,
use_softmax=True,
use_reduction=not use_ipu,
use_identity_loss=use_ipu,
)
def _test(self, use_ipu=False):
paddle.seed(self.SEED)
np.random.seed(self.SEED)
model = self.create_model(use_ipu)
optim = paddle.optimizer.Adam(
learning_rate=0.01, parameters=model.parameters()
)
if use_ipu:
paddle.set_device('ipu')
ipu_strategy = paddle.static.IpuStrategy()
ipu_strategy.set_graph_config(
num_ipus=1,
is_training=True,
micro_batch_size=1,
enable_manual_shard=False,
)
ipu_strategy.set_optimizer(optim)
epochs = 100
result = []
for _ in range(epochs):
# ipu only needs call model() to do forward/backward/grad_update
pred, loss = model(self.data, self.label)
if not use_ipu:
loss.backward()
optim.step()
optim.clear_grad()
result.append(loss)
if use_ipu:
ipu_strategy.release_patch()
return np.array(result)
def test_training(self):
ipu_loss = self._test(True).flatten()
cpu_loss = self._test(False).flatten()
np.testing.assert_allclose(ipu_loss, cpu_loss, rtol=1e-05, atol=1e-4)
class TestSaveLoad(TestBase):
def setUp(self):
super().setUp()
self.save_path = tempfile.TemporaryDirectory()
def tearDown(self):
super().tearDown()
self.save_path.cleanup()
def _test(self, use_ipu=False):
paddle.seed(self.SEED)
np.random.seed(self.SEED)
model = self.create_model(use_ipu)
optim = paddle.optimizer.Adam(
learning_rate=0.01, parameters=model.parameters()
)
model_path = '{}/model_state_dict_{}.pdparams'.format(
self.save_path, 'ipu' if use_ipu else 'cpu'
)
optim_path = '{}/optim_state_dict_{}.pdopt'.format(
self.save_path, 'ipu' if use_ipu else 'cpu'
)
if use_ipu:
paddle.set_device('ipu')
ipu_strategy = paddle.static.IpuStrategy()
ipu_strategy.set_graph_config(
num_ipus=1,
is_training=True,
micro_batch_size=1,
enable_manual_shard=False,
)
ipu_strategy.set_optimizer(optim)
epochs = 100
result = []
for _ in range(epochs):
# ipu only needs call model() to do forward/backward/grad_update
pred, loss = model(self.data, self.label)
if not use_ipu:
loss.backward()
optim.step()
optim.clear_grad()
result.append(loss)
if use_ipu:
paddle.base.core.IpuBackend.get_instance().weights_to_host()
paddle.save(model.state_dict(), model_path)
paddle.save(optim.state_dict(), optim_path)
model.set_state_dict(paddle.load(model_path))
optim.set_state_dict(paddle.load(optim_path))
for _ in range(epochs):
# ipu only needs call model() to do forward/backward/grad_update
pred, loss = model(self.data, self.label)
if not use_ipu:
loss.backward()
optim.step()
optim.clear_grad()
result.append(loss)
if use_ipu:
ipu_strategy.release_patch()
return np.array(result)
class TestPatch(IPUD2STest):
def setUp(cls):
paddle.disable_static()
def test(self, use_ipu=False):
old_getter = ProgramCache.__getitem__
old_step = LRScheduler.step
ipu_strategy = paddle.static.IpuStrategy()
ipu_strategy.release_patch()
reset_getter = ProgramCache.__getitem__
reset_step = LRScheduler.step
self.assertTrue(reset_getter is old_getter)
self.assertTrue(reset_step is old_step)
class TestWithoutIdentityLoss1(TestBase):
def create_model(self, use_ipu=False):
return SimpleLayer(
loss_op=self.loss_op,
use_softmax=True,
use_reduction=True,
use_identity_loss=False,
)
class TestWithoutIdentityLoss2(TestBase):
def set_op_attrs(self):
self.loss_op = paddle.nn.functional.softmax_with_cross_entropy
def set_data_feed(self):
self.data = paddle.uniform((8, 3, 10, 10), dtype='float32')
self.label = paddle.randint(0, 10, shape=[8, 1], dtype='int64')
def create_model(self, use_ipu=False):
return SimpleLayer(
loss_op=self.loss_op,
use_softmax=False,
use_reduction=True,
use_identity_loss=False,
)
class TestWithoutIdentityLoss3(TestBase):
def set_op_attrs(self):
self.loss_op = partial(paddle.nn.functional.kl_div, reduction="none")
def set_data_feed(self):
self.data = paddle.uniform((8, 3, 10, 10), dtype='float32')
self.label = paddle.rand(shape=[8, 81], dtype='float32')
def create_model(self, use_ipu=False):
return SimpleLayer(
loss_op=self.loss_op,
use_softmax=True,
use_reduction=True,
use_identity_loss=False,
)
class TestWithoutIdentityLoss4(TestBase):
def set_op_attrs(self):
self.loss_op = paddle.nn.functional.binary_cross_entropy
def set_data_feed(self):
self.data = paddle.uniform((8, 3, 10, 10), dtype='float32')
self.label = paddle.rand(shape=[8, 81], dtype='float32')
def create_model(self, use_ipu=False):
return SimpleLayer(
loss_op=self.loss_op,
use_softmax=True,
use_reduction=False,
use_identity_loss=False,
)
class TestWithoutIdentityLoss5(TestBase):
def set_op_attrs(self):
self.loss_op = paddle.nn.functional.binary_cross_entropy_with_logits
def set_data_feed(self):
self.data = paddle.uniform((8, 3, 10, 10), dtype='float32')
self.label = paddle.randint(0, 10, shape=[8, 81], dtype='int64').astype(
'float32'
)
def create_model(self, use_ipu=False):
return SimpleLayer(
loss_op=self.loss_op,
use_softmax=True,
use_reduction=True,
use_identity_loss=False,
)
if __name__ == "__main__":
unittest.main()