refine build strategy. test=develop

Author: dzhwinter

paddle/fluid/framework/ir/graph_helper_test.cc

@@ -203,7 +203,7 @@ TEST(GraphHelperTest, Circles) {
 
   std::vector<std::vector<ir::Node*>> circles;
   ASSERT_TRUE(FindCircleSubGraph(g, &circles));
-  ASSERT_EQ(circles.size() == 1UL);
+  ASSERT_EQ(circles.size(), 1UL);
 }
 
 TEST(GraphHelperTest, GraphNum) {

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

@@ -200,7 +200,7 @@ def _compare_reduce_and_allreduce(self,
                                       model,
                                       use_cuda,
                                       iter=20,
-                                      delta2=1e-6):
+                                      delta2=1e-5):
         if use_cuda and not core.is_compiled_with_cuda():
             return
 
@@ -228,7 +228,7 @@ def _compare_reduce_and_allreduce(self,
             optimizer=optimizer)
 
         for loss in zip(all_reduce_first_loss, reduce_first_loss):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
+            self.assertAlmostEquals(loss[0], loss[1], delta=1e-5)
         for loss in zip(all_reduce_last_loss, reduce_last_loss):
             self.assertAlmostEquals(loss[0], loss[1], delta=delta2)
 
@@ -258,17 +258,17 @@ def _compare_reduce_and_allreduce(self,
             enable_sequential_execution=True)
 
         for loss in zip(all_reduce_first_loss, all_reduce_first_loss_seq):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
+            self.assertAlmostEquals(loss[0], loss[1], delta=1e-5)
         for loss in zip(all_reduce_last_loss, all_reduce_last_loss_seq):
             self.assertAlmostEquals(loss[0], loss[1], delta=delta2)
 
         for loss in zip(reduce_first_loss, reduce_first_loss_seq):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
+            self.assertAlmostEquals(loss[0], loss[1], delta=1e-5)
         for loss in zip(reduce_last_loss, reduce_last_loss_seq):
             self.assertAlmostEquals(loss[0], loss[1], delta=delta2)
 
         for loss in zip(all_reduce_first_loss_seq, reduce_first_loss_seq):
-            self.assertAlmostEquals(loss[0], loss[1], delta=1e-6)
+            self.assertAlmostEquals(loss[0], loss[1], delta=1e-5)
         for loss in zip(all_reduce_last_loss_seq, reduce_last_loss_seq):
             self.assertAlmostEquals(loss[0], loss[1], delta=delta2)