diff --git a/paddle/framework/eigen.h b/paddle/framework/eigen.h
index 0438e758e0b170e7e23243a42984507189b2a3e5..54bbeafcabdeeb1e2c1017c156b3512c83dada3a 100644
--- a/paddle/framework/eigen.h
+++ b/paddle/framework/eigen.h
@@ -87,11 +87,11 @@ template <typename T, int MajorType = Eigen::RowMajor,
 struct EigenVector : public EigenTensor<T, 1, MajorType, IndexType> {
   // Flatten reshapes a Tensor into an EigenVector.
   static typename EigenVector::Type Flatten(Tensor& tensor) {
-    return EigenVector::From(tensor, {static_cast<int>(product(tensor.dims_))});
+    return EigenVector::From(tensor, {product(tensor.dims_)});
   }
 
   static typename EigenVector::ConstType Flatten(const Tensor& tensor) {
-    return EigenVector::From(tensor, {static_cast<int>(product(tensor.dims_))});
+    return EigenVector::From(tensor, {product(tensor.dims_)});
   }
 };
 
diff --git a/paddle/framework/eigen_test.cc b/paddle/framework/eigen_test.cc
index bae82fdb7d48c7029dd8c0d11c5bdca70b43da53..bc4a2db32cfba66bef2c444e1f822e0d2a57b91e 100644
--- a/paddle/framework/eigen_test.cc
+++ b/paddle/framework/eigen_test.cc
@@ -110,8 +110,7 @@ TEST(Eigen, Matrix) {
 
 TEST(Eigen, MatrixReshape) {
   Tensor t;
-  float* p =
-      t.mutable_data<float>(make_ddim({2, 3, 6, 4}), platform::CPUPlace());
+  float* p = t.mutable_data<float>({2, 3, 6, 4}, platform::CPUPlace());
   for (int i = 0; i < 2 * 3 * 6 * 4; ++i) {
     p[i] = static_cast<float>(i);
   }
diff --git a/paddle/framework/tensor_test.cc b/paddle/framework/tensor_test.cc
index a2c2d19dc73b72f4d595379ad534e235d6da8f50..55302ea47120f420e952b26830c8ea4cbcce6435 100644
--- a/paddle/framework/tensor_test.cc
+++ b/paddle/framework/tensor_test.cc
@@ -267,7 +267,7 @@ TEST(Tensor, ReshapeToMatrix) {
   using namespace paddle::framework;
   using namespace paddle::platform;
   Tensor src;
-  int* src_ptr = src.mutable_data<int>(make_ddim({2, 3, 4, 9}), CPUPlace());
+  int* src_ptr = src.mutable_data<int>({2, 3, 4, 9}, CPUPlace());
   for (int i = 0; i < 2 * 3 * 4 * 9; ++i) {
     src_ptr[i] = i;
   }
diff --git a/paddle/operators/mul_op.cc b/paddle/operators/mul_op.cc
index fb96d322e9e5040b1f12f9ceb58a5685d223bb0b..34595adedda745cb8e1137aaa99009a07bb29433 100644
--- a/paddle/operators/mul_op.cc
+++ b/paddle/operators/mul_op.cc
@@ -27,8 +27,8 @@ class MulOp : public framework::OperatorWithKernel {
   void InferShape(const framework::InferShapeContext &ctx) const override {
     auto x_dims = ctx.Input<Tensor>("X")->dims();
     auto y_dims = ctx.Input<Tensor>("Y")->dims();
-    int x_num_col_dims = GetAttr<int>("x_num_col_dims");
-    int y_num_col_dims = GetAttr<int>("y_num_col_dims");
+    int x_num_col_dims = Attr<int>("x_num_col_dims");
+    int y_num_col_dims = Attr<int>("y_num_col_dims");
 
     PADDLE_ENFORCE(x_dims.size() > x_num_col_dims,
                    "The rank of input tensor X(%s) should be larger than "
@@ -58,19 +58,19 @@ class MulOpMaker : public framework::OpProtoAndCheckerMaker {
     AddOutput("Out", "The output of mul op");
     AddAttr<int>(
         "x_num_col_dims",
-        "mul_op can take tensors with more than two dimensions as input `X`, "
-        "in that case, tensors will be reshaped to a matrix. The matrix's "
-        "first dimension(column length) will be the product of tensor's last "
-        "`num_col_dims` dimensions, and the matrix's second dimension(row "
-        "length) will be the product of tensor's first `rank - num_col_dims` "
-        "dimensions.")
+        R"DOC(mul_op can take tensors with more than two dimensions as input `X`, 
+            in that case, tensors will be reshaped to a matrix. The matrix's first 
+            dimension(column length) will be the product of tensor's last 
+            `num_col_dims` dimensions, and the matrix's second dimension(row length)
+            will be the product of tensor's first `rank - num_col_dims` dimensions.
+        )DOC")
         .SetDefault(1)
         .EqualLargerThan(1);
     AddAttr<int>(
         "y_num_col_dims",
-        "mul_op can take tensors with more than two dimensions as input `Y`, "
-        "in that case, tensors will be reshaped to a matrix. Just like input "
-        "`X`.")
+        R"DOC(mul_op can take tensors with more than two dimensions as input `Y`,
+             in that case, tensors will be reshaped to a matrix. Just like input `X`.
+        )DOC")
         .SetDefault(1)
         .EqualLargerThan(1);
     AddComment(R"DOC(
@@ -98,9 +98,9 @@ class MulOpGrad : public framework::OperatorWithKernel {
     auto *y_grad = ctx.Output<Tensor>(framework::GradVarName("Y"));
 
     auto x_mat_dims =
-        framework::flatten_to_2d(x_dims, GetAttr<int>("x_num_col_dims"));
+        framework::flatten_to_2d(x_dims, Attr<int>("x_num_col_dims"));
     auto y_mat_dims =
-        framework::flatten_to_2d(y_dims, GetAttr<int>("y_num_col_dims"));
+        framework::flatten_to_2d(y_dims, Attr<int>("y_num_col_dims"));
 
     PADDLE_ENFORCE_EQ(
         x_mat_dims[0], out_dims[0],
diff --git a/paddle/operators/mul_op.h b/paddle/operators/mul_op.h
index 6656ecaf1aff05082071f1a5956072f1a70cf63f..3c01f868bda8cba488b3403df456d63d6b082fa6 100644
--- a/paddle/operators/mul_op.h
+++ b/paddle/operators/mul_op.h
@@ -37,12 +37,12 @@ class MulKernel : public framework::OpKernel {
     const Tensor x_matrix =
         x->dims().size() > 2
             ? framework::ReshapeToMatrix<T>(
-                  *x, context.template GetAttr<int>("x_num_col_dims"))
+                  *x, context.template Attr<int>("x_num_col_dims"))
             : *x;
     const Tensor y_matrix =
         y->dims().size() > 2
             ? framework::ReshapeToMatrix<T>(
-                  *y, context.template GetAttr<int>("y_num_col_dims"))
+                  *y, context.template Attr<int>("y_num_col_dims"))
             : *y;
 
     z->mutable_data<T>(context.GetPlace());
@@ -57,8 +57,8 @@ template <typename Place, typename T>
 class MulGradKernel : public framework::OpKernel {
  public:
   void Compute(const framework::ExecutionContext& ctx) const override {
-    int x_num_col_dims = ctx.template GetAttr<int>("x_num_col_dims");
-    int y_num_col_dims = ctx.template GetAttr<int>("y_num_col_dims");
+    int x_num_col_dims = ctx.template Attr<int>("x_num_col_dims");
+    int y_num_col_dims = ctx.template Attr<int>("y_num_col_dims");
     const Tensor* x = ctx.Input<Tensor>("X");
     const Tensor* y = ctx.Input<Tensor>("Y");
     const Tensor x_matrix =