Open test_parallel_dygraph_se_resnext (#19342)

* enabel test_parallel_dygraph_se_resnext
test=develop

python/paddle/fluid/tests/unittests/parallel_dygraph_se_resnext.py

@@ -57,10 +57,15 @@ class ConvBNLayer(fluid.dygraph.Layer):
 
         self._batch_norm = BatchNorm(
             self.full_name(), num_filters, act=act, momentum=0.1)
+        self._layer_norm = fluid.dygraph.nn.LayerNorm(
+            self.full_name(), begin_norm_axis=1)
 
     def forward(self, inputs):
         y = self._conv(inputs)
-        y = self._batch_norm(y)
+        # FIXME(zcd): when compare the result of multi-card and single-card,
+        # we should replace batch_norm with layer_norm.
+        y = self._layer_norm(y)
+        # y = self._batch_norm(y)
 
         return y
 
@@ -278,7 +283,9 @@ class SeResNeXt(fluid.dygraph.Layer):
         for bottleneck_block in self.bottleneck_block_list:
             y = bottleneck_block(y)
         y = self.pool2d_avg(y)
-        y = fluid.layers.dropout(y, dropout_prob=0.2, seed=1)
+        # FIXME(zcd): the dropout should be removed when compare the
+        # result of multi-card and single-card.
+        # y = fluid.layers.dropout(y, dropout_prob=0.2, seed=1)
         cost = self.fc(y)
         loss = fluid.layers.cross_entropy(cost, label)
         avg_loss = fluid.layers.mean(loss)
@@ -290,7 +297,7 @@ class TestSeResNeXt(TestParallelDyGraphRunnerBase):
         model = SeResNeXt("se-resnext")
         train_reader = paddle.batch(
             paddle.dataset.flowers.test(use_xmap=False),
-            batch_size=2,
+            batch_size=4,
             drop_last=True)
 
         opt = fluid.optimizer.SGD(learning_rate=1e-3)

python/paddle/fluid/tests/unittests/test_parallel_dygraph_se_resnext.py

@@ -13,10 +13,11 @@
 # limitations under the License.
 
 from __future__ import print_function
-#import unittest
+import unittest
 from test_dist_base import TestDistBase
 import paddle.fluid as fluid
-'''
+
+
 class TestParallelDygraphSeResNeXt(TestDistBase):
     def _setup_config(self):
         self._sync_mode = False
@@ -24,12 +25,9 @@ class TestParallelDygraphSeResNeXt(TestDistBase):
         self._dygraph = True
 
     def test_se_resnext(self):
-        # TODO(Yancey1989): BN and Dropout is related with batchsize, so the delta is the 1,
-        # try to remove the BN and Dropout in the network and using delta = 1e-5
         if fluid.core.is_compiled_with_cuda():
-            self.check_with_place("parallel_dygraph_se_resnext.py", delta=1)
-'''
+            self.check_with_place("parallel_dygraph_se_resnext.py", delta=0.01)
+
 
 if __name__ == "__main__":
-    pass
-    #unittest.main()
+    unittest.main()