Make test_pe_seresnext serial (#19634)

* make test_pe_seresnext serial
test=develop

* Increase test_pe_seresnext time limit on MAC
test=develop

python/paddle/fluid/tests/unittests/CMakeLists.txt

@@ -170,6 +170,9 @@ list(REMOVE_ITEM TEST_OPS test_imperative_se_resnext)
 list(REMOVE_ITEM TEST_OPS test_imperative_mnist)
 list(REMOVE_ITEM TEST_OPS test_ir_memory_optimize_transformer)
 list(REMOVE_ITEM TEST_OPS test_layers)
+list(REMOVE_ITEM TEST_OPS test_parallel_executor_seresnext_base_cpu)
+list(REMOVE_ITEM TEST_OPS test_parallel_executor_seresnext_with_reduce_cpu)
+list(REMOVE_ITEM TEST_OPS test_parallel_executor_seresnext_with_fuse_all_reduce_cpu)
 list(REMOVE_ITEM TEST_OPS test_imperative_ocr_attention_model)
 list(REMOVE_ITEM TEST_OPS test_async_ssa_graph_executor_mnist)
 list(REMOVE_ITEM TEST_OPS test_install_check)
@@ -294,14 +297,18 @@ set_tests_properties(test_parallel_executor_fetch_feed PROPERTIES TIMEOUT 450)
 py_test_modules(test_parallel_executor_transformer MODULES test_parallel_executor_transformer)
 py_test_modules(test_parallel_executor_transformer_auto_growth MODULES test_parallel_executor_transformer_auto_growth ENVS FLAGS_allocator_strategy=auto_growth)
 py_test_modules(test_layers MODULES test_layers ENVS FLAGS_cudnn_deterministic=1)
+py_test_modules(test_parallel_executor_seresnext_base_cpu MODULES test_parallel_executor_seresnext_base_cpu)
+py_test_modules(test_parallel_executor_seresnext_with_reduce_cpu MODULES test_parallel_executor_seresnext_with_reduce_cpu)
+py_test_modules(test_parallel_executor_seresnext_with_fuse_all_reduce_cpu MODULES test_parallel_executor_seresnext_with_fuse_all_reduce_cpu)
+
 if(NOT WIN32)
     py_test_modules(test_ir_memory_optimize_transformer MODULES test_ir_memory_optimize_transformer)
 endif()
 
-if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR APPLE)
     set_tests_properties(test_parallel_executor_seresnext_base_cpu PROPERTIES TIMEOUT 900)
-    set_tests_properties(test_parallel_executor_seresnext_with_reduce_cpu PROPERTIES TIMEOUT 740)
-    set_tests_properties(test_parallel_executor_seresnext_with_fuse_all_reduce_cpu PROPERTIES TIMEOUT 450)
+    set_tests_properties(test_parallel_executor_seresnext_with_reduce_cpu PROPERTIES TIMEOUT 750)
+    set_tests_properties(test_parallel_executor_seresnext_with_fuse_all_reduce_cpu PROPERTIES TIMEOUT 750)
 endif()
 
 if (WITH_NGRAPH)