try to fix two unittests, test=develop (#25372)

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

@@ -18,10 +18,10 @@ import numpy as np
 
 def simple_fc_net_with_inputs(img, label, class_num=10):
     hidden = img
-    for _ in range(4):
+    for _ in range(2):
         hidden = fluid.layers.fc(
             hidden,
-            size=200,
+            size=100,
             act='relu',
             bias_attr=fluid.ParamAttr(
                 initializer=fluid.initializer.Constant(value=1.0)))

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

@@ -32,7 +32,7 @@ def create_reader(shape, batch_number):
 class DataLoaderKeepOrderTestBase(unittest.TestCase):
     def initParameters(self):
         self.iterable = False
-        self.break_num = 10000
+        self.break_num = 100
 
     def setUp(self):
         self.epoch_num = 3
@@ -151,7 +151,7 @@ class DataLoaderKeepOrderTestBase(unittest.TestCase):
 class IterableDataLoaderKeepOrderTest2(DataLoaderKeepOrderTestBase):
     def initParameters(self):
         self.iterable = True
-        self.break_num = 10000
+        self.break_num = 100
 
 
 class IterableDataLoaderKeepOrderTest3(DataLoaderKeepOrderTestBase):