add unit test for mkldnn_batch_norm layer

paddle/gserver/tests/MKLDNNTester.cpp

@@ -91,10 +91,16 @@ void MKLDNNTester::setInputImgSize() {
 // init randome parameters of ref, and copy to mkldnn
 void MKLDNNTester::randomWgtDatas() {
   EXPECT_EQ(parameters_[DNN].size(), parameters_[REF].size());
+  const bool isBN = refLayer_->getType() == "batch_norm";
   for (size_t i = 0; i < parameters_[REF].size(); ++i) {
     const VectorPtr& dnnValue = parameters_[DNN][i]->getBuf(PARAMETER_VALUE);
     const VectorPtr& refValue = parameters_[REF][i]->getBuf(PARAMETER_VALUE);
     parameters_[REF][i]->randomize();
+    if (isBN && i == 2) {
+      // this param is moving average in batch norm, which must larger than 0
+      real offset = fabs(refValue->getMin()) + 1.0;
+      refValue->add(offset);
+    }
     dnnValue->copyFrom(*refValue);
 
     VLOG(MKLDNN_TESTS) << "Random weight " << parameters_[DNN][i]->getName();
@@ -132,8 +138,7 @@ void MKLDNNTester::checkForward() {
 
 void MKLDNNTester::checkBackwardData() {
   VLOG(MKLDNN_TESTS) << "Check Backward Data";
-  // TODO(TJ): uncomment me when batch norm ready
-  // const bool isBN = dnnLayer_->getType() == "mkldnn_batch_norm";
+  const bool isBN = refLayer_->getType() == "batch_norm";
   for (size_t i = 0; i < dataLayers_[DNN].size(); ++i) {
     const MatrixPtr& dnnDiff = dataLayers_[DNN][i]->getOutputGrad();
     const MatrixPtr& refDiff = dataLayers_[REF][i]->getOutputGrad();
@@ -144,11 +149,11 @@ void MKLDNNTester::checkBackwardData() {
 
     double delta = compareMatrix(dnnDiff, refDiff);
     EXPECT_LE(fabs(delta), eps_);
-    // TODO(TJ): uncomment me when batch norm ready
-    // if (isBN) {
-    //  // the other two inputs in batch norm are for moving mean and var
-    //  break;
-    // }
+    if (isBN) {
+      // the other two inputs in batch norm are for moving mean and var
+      // do not have grad to compare
+      break;
+    }
   }
 }
 
@@ -308,10 +313,14 @@ double MKLDNNTester::compareVector(const VectorPtr& v1, const VectorPtr& v2) {
 void MKLDNNTester::runOnce() {
   // test forward
   randomBotDatas();
-  dnnLayer_->forward(PASS_TRAIN);
-  refLayer_->forward(PASS_TRAIN);
+  dnnLayer_->forward(passType_);
+  refLayer_->forward(passType_);
   checkForward();
 
+  if (passType_ == PASS_TEST) {
+    return;
+  }
+
   // test backward
   // simple updater
   UpdateCallback updateCallback = [](Parameter* para) {
@@ -343,6 +352,7 @@ void MKLDNNTester::run(const TestConfig& dnn,
                        size_t batchSize,
                        size_t inputImgH,
                        size_t inputImgW,
+                       PassType passType,
                        bool printDetails,
                        size_t iter,
                        float epsilon) {
@@ -361,6 +371,7 @@ void MKLDNNTester::run(const TestConfig& dnn,
 
   ih_ = inputImgH;
   iw_ = inputImgW;
+  passType_ = passType;
   log_ = printDetails;
   iter_ = iter;
   eps_ = epsilon;

paddle/gserver/tests/MKLDNNTester.h

@@ -62,12 +62,15 @@ protected:
   float eps_;
   /// input image size, default 1
   size_t ih_, iw_;
+  /// passType, PASS_TRAIN, PASS_TEST or PASS_GC (Gradient Check pass)
+  PassType passType_;
 
 public:
   explicit MKLDNNTester(size_t iter = 3, float epsilon = 1e-4) {
     iter_ = iter;
     eps_ = epsilon;
     log_ = false;
+    passType_ = PASS_TRAIN;
   }
 
   ~MKLDNNTester() {}
@@ -78,6 +81,7 @@ public:
            size_t batchSize,
            size_t inputImgH = 1,
            size_t inputImgW = 1,
+           PassType passType = PASS_TRAIN,
            bool printDetails = false,
            size_t iter = 3,
            float epsilon = 1e-4);

paddle/gserver/tests/test_MKLDNN.cpp

@@ -212,6 +212,66 @@ TEST(MKLDNNLayer, PoolLayer) {
   testPoolLayer({2, 8, 56, 56, 29, 29, 3, 3, 1, 1, 2, 2});
 }
 
+struct testBatchNormDesc {
+  int bs;
+  int ic;
+  int ih, iw;
+};
+
+static void getMKLDNNBatchNormConfig(TestConfig& cfg,
+                                     const testBatchNormDesc& pm) {
+  cfg.layerConfig.set_size(pm.ic * pm.ih * pm.iw);
+  cfg.layerConfig.set_type("mkldnn_batch_norm");
+  cfg.biasSize = pm.ic;
+  cfg.inputDefs.push_back(
+      {INPUT_DATA,
+       "layer_0",
+       /* size of input layer= */ size_t(pm.ic * pm.ih * pm.iw),
+       /* size of weight= */ size_t(pm.ic)});
+  cfg.inputDefs.push_back(
+      {INPUT_DATA, "layer_1_moving_mean", 1, size_t(pm.ic)});
+  cfg.inputDefs.back().isStatic = true;
+  cfg.inputDefs.push_back({INPUT_DATA, "layer_2_moving_var", 1, size_t(pm.ic)});
+  cfg.inputDefs.back().isStatic = true;
+  LayerInputConfig* input = cfg.layerConfig.add_inputs();
+  // TODO(TJ): uncomment me when refine and support comparing all zeroes vector
+  // cfg.layerConfig.set_active_type("relu");
+  cfg.layerConfig.add_inputs();
+  cfg.layerConfig.add_inputs();
+  ImageConfig* img_conf = input->mutable_image_conf();
+  img_conf->set_channels(pm.ic);
+  img_conf->set_img_size_y(pm.ih);
+  img_conf->set_img_size(pm.iw);
+}
+
+void testBatchNormLayer(const testBatchNormDesc& pm) {
+  TestConfig dnnConfig;
+  getMKLDNNBatchNormConfig(dnnConfig, pm);
+  TestConfig refConfig = dnnConfig;
+  refConfig.layerConfig.set_type("batch_norm");
+  // for PASS_TRAIN, use_global_stats always should be false, and batchsize != 1
+  VLOG(MKLDNN_TESTS) << "check train phase";
+  dnnConfig.layerConfig.set_use_global_stats(false);
+  refConfig.layerConfig.set_use_global_stats(false);
+  MKLDNNTester tester;
+  tester.run(dnnConfig, refConfig, pm.bs, pm.ih, pm.iw, PASS_TRAIN);
+  // for PASS_TEST, check use_global_stats true and false, and batchsize 1
+  VLOG(MKLDNN_TESTS) << "check test phase";
+  for (auto useGS : {false, true}) {
+    dnnConfig.layerConfig.set_use_global_stats(useGS);
+    refConfig.layerConfig.set_use_global_stats(useGS);
+    MKLDNNTester tester;
+    for (auto bs : {pm.bs, 1}) {
+      tester.run(dnnConfig, refConfig, bs, pm.ih, pm.iw, PASS_TEST);
+    }
+  }
+}
+
+TEST(MKLDNNLayer, BatchNormLayer) {
+  testBatchNormLayer({4, 10, 6, 6});
+  testBatchNormLayer({16, 32, 16, 16});
+}
+
 struct testActDesc {
   int bs, ic, ih, iw;
 };