!28580 add pynative 8p testcase

Merge pull request !28580 from caifubi/master-pynative-testcase

tests/st/pynative/test_pynative_resnet50_gpu.py

@@ -16,7 +16,6 @@
 import time
 import random
 import numpy as np
-import pytest
 
 import mindspore.common.dtype as mstype
 import mindspore.dataset as ds
@@ -33,6 +32,8 @@ from mindspore.ops import operations as P
 from mindspore.ops import composite as CP
 from mindspore.nn.optim.momentum import Momentum
 from mindspore.nn.wrap.cell_wrapper import WithLossCell
+from mindspore.context import ParallelMode
+from mindspore.communication.management import init
 
 random.seed(1)
 np.random.seed(1)
@@ -377,11 +378,11 @@ class GradWrap(Cell):
         return grad_by_list(self.network, weights)(x, label)
 
 
-@pytest.mark.level0
-@pytest.mark.platform_x86_gpu_training
-@pytest.mark.env_onecard
 def test_pynative_resnet50():
     context.set_context(mode=context.PYNATIVE_MODE, device_target="GPU")
+    context.reset_auto_parallel_context()
+    context.set_auto_parallel_context(parallel_mode=ParallelMode.DATA_PARALLEL, gradients_mean=False, device_num=8)
+    init()
 
     batch_size = 32
     num_classes = 10

tests/st/pynative/test_pynative_resnet50_gpu_8p.py

@@ -0,0 +1,28 @@
+# Copyright 2022 Huawei Technologies Co., Ltd
+#
+# 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 pytest
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_single
+def test_pynative_resnet50_gpu_8p_performance():
+    """
+    Feature: PyNative ResNet50 8P
+    Description: test PyNative ResNet50 8p performance
+    Expectation: success, return_code==0
+    """
+    return_code = os.system("mpirun -n 8 pytest -s test_pynative_resnet50_gpu.py")
+    assert return_code == 0