fix static dataloader default pin memory set (#26390)

* fix static dataloader default pin memory set

* fix related unittests

python/paddle/fluid/reader.py

@@ -1039,7 +1039,7 @@ class GeneratorLoader(DataLoaderBase):
         self._reader = core.create_py_reader(
             self.queue, self._var_names, self._shapes, self._dtypes,
             self._need_check_feed, self._places, self._use_double_buffer,
-            self._drop_last, True)
+            self._drop_last, False)
 
     def _init_non_iterable(self):
         lod_levels = []

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

@@ -122,14 +122,8 @@ class TestBase(unittest.TestCase):
                             label = item['label']
                             assert image.shape() == [BATCH_SIZE, 784]
                             assert label.shape() == [BATCH_SIZE, 1]
-                            if ps[i]._equals(fluid.CPUPlace()):
-                                assert image._place()._equals(fluid.CPUPlace())
-                                assert label._place()._equals(fluid.CPUPlace())
-                            else:
-                                assert image._place()._equals(
-                                    fluid.CUDAPinnedPlace())
-                                assert label._place()._equals(
-                                    fluid.CUDAPinnedPlace())
+                            assert image._place()._equals(ps[i])
+                            assert label._place()._equals(ps[i])
                         L, = exe.run(program=prog,
                                      feed=d,
                                      fetch_list=[loss],

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

@@ -124,14 +124,8 @@ class TestBase(unittest.TestCase):
                             label = item['label']
                             assert image.shape() == [BATCH_SIZE, 784]
                             assert label.shape() == [BATCH_SIZE, 1]
-                            if ps[i]._equals(fluid.CPUPlace()):
-                                assert image._place()._equals(fluid.CPUPlace())
-                                assert label._place()._equals(fluid.CPUPlace())
-                            else:
-                                assert image._place()._equals(
-                                    fluid.CUDAPinnedPlace())
-                                assert label._place()._equals(
-                                    fluid.CUDAPinnedPlace())
+                            assert image._place()._equals(ps[i])
+                            assert label._place()._equals(ps[i])
                         L, = exe.run(program=prog,
                                      feed=d,
                                      fetch_list=[loss],