diff --git a/paddle/fluid/memory/allocation/retry_allocator_test.cc b/paddle/fluid/memory/allocation/retry_allocator_test.cc
index a0ce2875cb..f0b215dac2 100644
--- a/paddle/fluid/memory/allocation/retry_allocator_test.cc
+++ b/paddle/fluid/memory/allocation/retry_allocator_test.cc
@@ -41,7 +41,7 @@ TEST(RetryAllocator, RetryAllocator) {
 
   size_t thread_num = 32;
   size_t sleep_time = 40;
-  size_t extra_time = 2;
+  size_t extra_time = 10;
 
   // Reserve to perform more tests in the future
   std::vector<std::shared_ptr<Allocator>> allocators;
diff --git a/paddle/testing/paddle_gtest_main.cc b/paddle/testing/paddle_gtest_main.cc
index babb862122..ef43d13e18 100644
--- a/paddle/testing/paddle_gtest_main.cc
+++ b/paddle/testing/paddle_gtest_main.cc
@@ -31,6 +31,11 @@ int main(int argc, char** argv) {
 #if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
   new_argv.push_back(
       strdup("--tryfromenv=fraction_of_gpu_memory_to_use,allocator_strategy"));
+#elif __clang__
+  new_argv.push_back(
+      strdup("--tryfromenv=use_mkldnn,initial_cpu_memory_in_"
+             "mb,allocator_strategy"));
+  new_argv.push_back(strdup("--undefok=use_mkldnn,initial_cpu_memory_in_mb"));
 #else
   new_argv.push_back(
       strdup("--tryfromenv=use_pinned_memory,use_mkldnn,initial_cpu_memory_in_"
diff --git a/python/paddle/fluid/__init__.py b/python/paddle/fluid/__init__.py
index d851b9dfaa..f7fefb3e5b 100644
--- a/python/paddle/fluid/__init__.py
+++ b/python/paddle/fluid/__init__.py
@@ -91,6 +91,7 @@ def __bootstrap__():
     """
     import sys
     import os
+    import platform
     from . import core
 
     in_test = 'unittest' in sys.modules
@@ -110,14 +111,17 @@ def __bootstrap__():
         print('PLEASE USE OMP_NUM_THREADS WISELY.', file=sys.stderr)
 
     os.environ['OMP_NUM_THREADS'] = str(num_threads)
-
+    sysstr = platform.system()
     read_env_flags = [
-        'use_pinned_memory', 'check_nan_inf', 'benchmark', 'eager_delete_scope',
-        'use_mkldnn', 'use_ngraph', 'initial_cpu_memory_in_mb',
-        'init_allocated_mem', 'free_idle_memory', 'paddle_num_threads',
-        "dist_threadpool_size", 'eager_delete_tensor_gb', 'allocator_strategy',
+        'check_nan_inf', 'benchmark', 'eager_delete_scope', 'use_mkldnn',
+        'use_ngraph', 'initial_cpu_memory_in_mb', 'init_allocated_mem',
+        'free_idle_memory', 'paddle_num_threads', "dist_threadpool_size",
+        'eager_delete_tensor_gb', 'allocator_strategy',
         'reader_queue_speed_test_mode', 'print_sub_graph_dir'
     ]
+    if 'Darwin' not in sysstr:
+        read_env_flags.append('use_pinned_memory')
+
     if os.name != 'nt':
         read_env_flags.append('warpctc_dir')
         read_env_flags.append('cpu_deterministic')