change clone to resizeOrCreate in fm layer

paddle/gserver/layers/FactorizationMachineLayer.cpp

@@ -58,16 +58,22 @@ void FactorizationMachineLayer::forward(PassType passType) {
       inputMulFactor_, batchSize, factorSize_, false, useGpu_);
   Matrix::resizeOrCreate(tmpOut_, batchSize, factorSize_, false, useGpu_);
 
-  REGISTER_TIMER_INFO("InputMulFactorTimer", getName().c_str());
+  REGISTER_TIMER_INFO("FmInputMulFactorTimer", getName().c_str());
   inputMulFactor_->mul(*inputV, *latentVectors_->getW());
   inputMulFactor_->square2(*tmpOut_);
   outV->sumRows(*tmpOut_, 0.5, 0);
 
-  inputSquare_ = inputV->clone(0, 0, useGpu_);
+  if (dynamic_cast<CpuSparseMatrix*>(inputV.get())) {
-  if (dynamic_cast<CpuSparseMatrix*>(inputSquare_.get())) {
+    Matrix::resizeOrCreateSparseMatrix(inputSquare_,
+                                       inputV->getHeight(),
+                                       inputV->getWidth(),
+                                       inputV->getElementCnt(),
+                                       inputV->getValueType());
     inputSquare_->copyFrom(*inputV);
     (dynamic_cast<CpuSparseMatrix*>(inputSquare_.get()))->square2();
   } else {
+    Matrix::resizeOrCreate(
+        inputSquare_, inputV->getHeight(), inputV->getWidth(), false, useGpu_);
     inputV->square2(*inputSquare_);
   }
   latentVectors_->getW()->square2(*latentVectorsSquare_);
@@ -75,7 +81,7 @@ void FactorizationMachineLayer::forward(PassType passType) {
   outV->sumRows(*tmpOut_, -0.5, 1.0);
 
   /* activation */ {
-    REGISTER_TIMER_INFO("FmAtvTimer", getName().c_str());
+    REGISTER_TIMER_INFO("FmFwAtvTimer", getName().c_str());
     forwardActivation();
   }
 }