simplify some comments and code

paddle/gserver/layers/MKLDNNConvLayer.cpp

@@ -315,7 +315,7 @@ void MKLDNNConvLayer::resetOutValue(
     } else {
       cpuOutVal_ = out;
     }
-    // when output is cpu device, change the mkldnn output value and make they
+    // when output is cpu device, change the mkldnn output value and make them
     // share the same data. Then if next layer use inputlayer->getOuputValue()
     // to achieve the input value, it will get the right data.
     output_.value = std::dynamic_pointer_cast<Matrix>(cpuOutVal_);

paddle/gserver/layers/MKLDNNLayer.h

@@ -268,9 +268,9 @@ protected:
   /**
    * reset the output grad matrix from primitive desc.
    * and reset the merge grad primitive if needed.
-   * note: when this layer have serval output,
-   *       do not support mixing with cpu device,
-   *       because can not get memory desc from cpu device.
+   * note: when this layer has serval outputs,
+   *       it could not be mixed with cpu device,
+   *       since it can not get memory desc from cpu device.
    */
   virtual void resetOutGrad(MKLDNNMatrixPtr& out,
                             mkldnn::memory::primitive_desc pd) {
@@ -281,7 +281,7 @@ protected:
     if (outputMap_.size() <= 1) {
       return;
     }
-    std::vector<double> scales;
+    std::vector<double> scales(outputMap_.size(), 1.0);
     std::vector<mkldnn::memory::primitive_desc> srcPDs;
     std::vector<mkldnn::primitive::at> srcs;
     for (auto it = outputMap_.begin(); it != outputMap_.end(); ++it) {
@@ -297,7 +297,6 @@ protected:
       }
       srcPDs.push_back(src->getPrimitiveDesc());
       srcs.push_back(*src);
-      scales.push_back(1.0);
     }
 
     // TODO(TJ): remove me when mkldnn sum support different formats

paddle/trainer/tests/CMakeLists.txt

@@ -39,22 +39,18 @@ add_test(NAME test_CompareTwoNets
 
 ################ test_CompareMKLDNNandCPU ######################
 if(WITH_MKLDNN)
-  add_unittest_without_exec(test_CompareMKLDNNandCPU
-      test_CompareTwoNets.cpp)
-  add_test(NAME test_CompareMKLDNNandCPU
-    COMMAND ${PADDLE_SOURCE_DIR}/paddle/.set_python_path.sh -d ${PADDLE_SOURCE_DIR}/python/
-          ${CMAKE_CURRENT_BINARY_DIR}/test_CompareMKLDNNandCPU
-              --config_file_a=trainer/tests/sample_trainer_config_simple_net.conf --use_mkldnn_a=True
-              --config_file_b=trainer/tests/sample_trainer_config_simple_net.conf --use_mkldnn_b=False
-              --use_gpu=False
-      WORKING_DIRECTORY ${PADDLE_SOURCE_DIR}/paddle/)
-  add_test(NAME test_CompareMKLDNNandCPU_Banches
-    COMMAND ${PADDLE_SOURCE_DIR}/paddle/.set_python_path.sh -d ${PADDLE_SOURCE_DIR}/python/
-          ${CMAKE_CURRENT_BINARY_DIR}/test_CompareMKLDNNandCPU
-              --config_file_a=trainer/tests/sample_trainer_config_branch_net.conf --use_mkldnn_a=True
-              --config_file_b=trainer/tests/sample_trainer_config_branch_net.conf --use_mkldnn_b=False
-              --use_gpu=False
-      WORKING_DIRECTORY ${PADDLE_SOURCE_DIR}/paddle/)
+  macro(gen_command VAR_NAME CONFIG_FILE)
+    set(${VAR_NAME} "${PADDLE_SOURCE_DIR}/paddle/.set_python_path.sh" "-d" "${PADDLE_SOURCE_DIR}/python/"
+                    "${CMAKE_CURRENT_BINARY_DIR}/test_CompareMKLDNNandCPU --use_gpu=False"
+                    "--config_file_a=trainer/tests/${CONFIG_FILE} --use_mkldnn_a=True"
+                    "--config_file_b=trainer/tests/${CONFIG_FILE} --use_mkldnn_b=False"
+                    "WORKING_DIRECTORY" "${PADDLE_SOURCE_DIR}/paddle/")
+  endmacro()
+  add_unittest_without_exec(test_CompareMKLDNNandCPU test_CompareTwoNets.cpp)
+  gen_command(compare_simple_net "sample_trainer_config_simple_net.conf")
+  gen_command(compare_branch_net "sample_trainer_config_branch_net.conf")
+  add_test(NAME test_CompareMKLDNNandCPU_simple_net COMMAND ${compare_simple_net})
+  add_test(NAME test_CompareMKLDNNandCPU_branch_net COMMAND ${compare_branch_net})
 endif()
 
 ############### test_CompareTwoOpts ###################