Revert "git revert:debug"

This reverts commit 76be031254.

Source/SGDLib/SGD.cpp

@@ -1934,11 +1934,6 @@ template <class ElemType>
 
     // clipping gradients to prevent outliers
     sgd->ClipGradient(gradientValues, actualMBSize);
-    if (gradientValues.GetMatrixType() == MatrixType::SPARSE)
-    {
-      fprintf(stderr, "Sparse matirx: %d [%d * %d] \n", gradientValues.GetNumElements(), gradientValues.GetNumRows(), gradientValues.GetNumCols());
-      fflush(stderr);
-    }
 
     GradientsUpdateType adpType = sgd->GradUpdateType();
     double noiseStd = sgd->GradientUpdateNoiseStd();
@@ -1952,7 +1947,6 @@ template <class ElemType>
         sgdUpdateNoise.SetGaussianRandomValue(0, (ElemType) noiseStd);
     }
 
-
     // L2 regularizer
     if (L2RegWeight > 0)
     {