Add new unittests for gIOHW format in conv_transpose_mkldnn_op (PaddlePaddle#37344)

* Add new unittests

* Replace I with O channel for filter groups

* Undo changes affecting other operators

* Fix oneDNN namespace typo

* Fix code format error

Author: Silv3S

paddle/fluid/operators/mkldnn/conv_transpose_mkldnn_op.cc

@@ -26,14 +26,12 @@ using Tensor = framework::Tensor;
 using framework::DataLayout;
 
 inline dnnl::memory::dims GetWeightsTz(const Tensor* filter, const int groups) {
-  auto iohw_weights_tz = framework::vectorize(filter->dims());
-  auto weights_tz = iohw_weights_tz;
-
-  // IOHW -> OIHW
-  weights_tz[0] = iohw_weights_tz[1];
-  weights_tz[1] = iohw_weights_tz[0];
+  auto weights_tz = framework::vectorize(filter->dims());
   int g = std::max(groups, 1);
+  int g_dim = (g > 1) ? 1 : 0;
   platform::GetGroupConvWeightsTz(weights_tz, g);
+  // gIOHW -> gOIHW || IOHW -> OIHW
+  std::swap(weights_tz[g_dim + 0], weights_tz[g_dim + 1]);
   return weights_tz;
 }
 

python/paddle/fluid/tests/unittests/mkldnn/test_conv2d_transpose_mkldnn_op.py

@@ -154,6 +154,27 @@ def init_test_case(self):
         self.padding_algorithm = "EXPLICIT"
 
 
+class TestMKLDNNWithGroups(TestConv2DTransposeMKLDNNOp):
+    def init_test_case(self):
+        TestConv2DTransposeMKLDNNOp.init_test_case(self)
+        self.pad = [1, 1]
+        self.groups = 2
+        self.input_size = [2, 4, 5, 5]  # NCHW
+        f_c = self.input_size[1]
+        self.filter_size = [f_c, 3, 3, 3]
+
+
+class TestMKLDNNWithGroups_NHWC(TestConv2DTransposeMKLDNNOp):
+    def init_test_case(self):
+        TestConv2DTransposeMKLDNNOp.init_test_case(self)
+        self.pad = [1, 1]
+        self.groups = 2
+        self.input_size = [2, 5, 5, 4]  # NHWC
+        f_c = self.input_size[-1]
+        self.filter_size = [f_c, 3, 3, 3]
+        self.data_format = 'NHWC'
+
+
 if __name__ == '__main__':
     enable_static()
     unittest.main()