diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/concatv2_gpu_kernel.h b/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/concatv2_gpu_kernel.h
index bae315d1c1..3014477a48 100644
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/concatv2_gpu_kernel.h
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/concatv2_gpu_kernel.h
@@ -74,12 +74,12 @@ class ConcatV2GpuFwdKernel : public GpuKernel {
     inputs_host_ = std::make_unique<T *[]>(input_num_);
     len_axis_ = std::make_unique<int[]>(input_num_);
     for (int i = 0; i < input_num_; i++) {
-      int input_size = 1;
+      size_t input_size = 1;
       auto input_shape = AnfAlgo::GetPrevNodeOutputInferShape(kernel_node, i);
       for (size_t j = 0; j < input_shape.size(); j++) {
-        input_size *= SizeToInt(input_shape[j]);
+        input_size *= input_shape[j];
       }
-      input_size_list_.push_back(IntToSize(input_size * sizeof(T)));
+      input_size_list_.push_back(input_size * sizeof(T));
       len_axis_[i] = SizeToInt(input_shape[axis_]);
     }
     workspace_size_list_.push_back(sizeof(T *) * input_num_);
@@ -97,7 +97,7 @@ class ConcatV2GpuFwdKernel : public GpuKernel {
         all_size_before_axis_ *= output_shape[i];
       }
     }
-    output_size_list_.push_back(IntToSize(output_size_ * sizeof(T)));
+    output_size_list_.push_back(output_size_ * sizeof(T));
 
     InitSizeLists();
     return true;
@@ -117,7 +117,7 @@ class ConcatV2GpuFwdKernel : public GpuKernel {
   }
   int axis_;
   int input_num_;
-  int output_size_;
+  size_t output_size_;
   int all_size_before_axis_;
   int all_size_axis_;
   std::unique_ptr<T *[]> inputs_host_;
diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/split_gpu_kernel.h b/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/split_gpu_kernel.h
index b26c01ee10..b1593675ba 100644
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/split_gpu_kernel.h
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/arrays/split_gpu_kernel.h
@@ -83,7 +83,7 @@ class SplitGpuFwdKernel : public GpuKernel {
         all_size_before_axis_ *= input_shape[i];
       }
     }
-    input_size_list_.push_back(IntToSize(input_size_ * sizeof(T)));
+    input_size_list_.push_back(input_size_ * sizeof(T));
     axis_step_ = input_shape[axis_] / output_num_;
 
     for (int i = 0; i < output_num_; i++) {
@@ -138,7 +138,7 @@ class SplitGpuFwdKernel : public GpuKernel {
   }
   int axis_;
   int output_num_;
-  int input_size_;
+  size_t input_size_;
   int axis_step_;
   int all_size_before_axis_;
   int all_size_axis_;
diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cu b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cu
index c3a77d186d..4866d61dd9 100755
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cu
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cu
@@ -19,7 +19,7 @@
 #include <cuda_runtime.h>
 #include "backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cuh"
 template <typename T>
-__global__ void Concat(const int size, const int input_num,
+__global__ void Concat(const size_t size, const int input_num,
                        const int all_size_before_axis, const int all_size_axis,
                        int* len_axis, T** inputs, T* output) {
   for (int pos = blockIdx.x * blockDim.x + threadIdx.x; pos < (size); pos += blockDim.x * gridDim.x) {
@@ -45,7 +45,7 @@ __global__ void Concat(const int size, const int input_num,
 }
 
 template <typename T>
-void ConcatKernel(const int size, const int input_num,
+void ConcatKernel(const size_t size, const int input_num,
                   const int all_size_before_axis, const int all_size_axis,
                   int* len_axis, T** inputs, T* output,
                   cudaStream_t cuda_stream) {
@@ -55,15 +55,15 @@ void ConcatKernel(const int size, const int input_num,
   return;
 }
 
-template void ConcatKernel(const int size, const int input_num,
+template void ConcatKernel(const size_t size, const int input_num,
                            const int all_size_before_axis, const int all_size_axis,
                            int* len_axis, float** inputs, float* output,
                            cudaStream_t cuda_stream);
-template void ConcatKernel(const int size, const int input_num,
+template void ConcatKernel(const size_t size, const int input_num,
                            const int all_size_before_axis, const int all_size_axis,
                            int* len_axis, int** inputs, int* output,
                            cudaStream_t cuda_stream);
-template void ConcatKernel(const int size, const int input_num,
+template void ConcatKernel(const size_t size, const int input_num,
                            const int all_size_before_axis, const int all_size_axis,
                            int* len_axis, half** inputs, half* output,
                            cudaStream_t cuda_stream);
diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cuh b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cuh
index 010e2977e2..6e469e8028 100755
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cuh
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/concatv2_impl.cuh
@@ -19,7 +19,7 @@
 
 #include "runtime/device/gpu/cuda_common.h"
 template <typename T>
-void ConcatKernel(const int size, const int input_num,
+void ConcatKernel(const size_t size, const int input_num,
                   const int all_size_before_axis, const int all_size_axis,
                   int* len_axis, T** inputs, T* output,
                   cudaStream_t cuda_stream);
diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cu b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cu
index a242290860..e892a3b47d 100755
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cu
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cu
@@ -19,7 +19,7 @@
 #include <cuda_runtime.h>
 #include "backend/kernel_compiler/gpu/cuda_impl/split_impl.cuh"
 template <typename T>
-__global__ void Split(const int size, const int axis_step, const int all_size_before_axis,
+__global__ void Split(const size_t size, const int axis_step, const int all_size_before_axis,
                       const int all_size_axis, const T* input, T** outputs) {
   for (size_t pos = blockIdx.x * blockDim.x + threadIdx.x; pos < size; pos += blockDim.x * gridDim.x) {
     int num = pos % all_size_before_axis / all_size_axis;
@@ -32,19 +32,19 @@ __global__ void Split(const int size, const int axis_step, const int all_size_be
 }
 
 template <typename T>
-void SplitKernel(const int size, const int axis_step, const int all_size_before_axis,
+void SplitKernel(const size_t size, const int axis_step, const int all_size_before_axis,
                  const int all_size_axis, const T* input, T** outputs, cudaStream_t cuda_stream) {
   Split<<<GET_BLOCKS(size), GET_THREADS, 0, cuda_stream>>>(size, axis_step, all_size_before_axis,
                                                            all_size_axis, input, outputs);
   return;
 }
 
-template void SplitKernel(const int size, const int axis_step, const int all_size_before_axis,
+template void SplitKernel(const size_t size, const int axis_step, const int all_size_before_axis,
                           const int all_size_axis, const float* input, float** outputs,
                           cudaStream_t cuda_stream);
-template void SplitKernel(const int size, const int axis_step, const int all_size_before_axis,
+template void SplitKernel(const size_t size, const int axis_step, const int all_size_before_axis,
                           const int all_size_axis, const int* input, int** outputs,
                           cudaStream_t cuda_stream);
-template void SplitKernel(const int size, const int axis_step, const int all_size_before_axis,
+template void SplitKernel(const size_t size, const int axis_step, const int all_size_before_axis,
                           const int all_size_axis, const half* input, half** outputs,
                           cudaStream_t cuda_stream);
diff --git a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cuh b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cuh
index 5306648da8..b8abce290d 100755
--- a/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cuh
+++ b/mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/split_impl.cuh
@@ -19,6 +19,6 @@
 
 #include "runtime/device/gpu/cuda_common.h"
 template <typename T>
-void SplitKernel(const int size, const int axis_step, const int all_size_before_axis,
+void SplitKernel(const size_t size, const int axis_step, const int all_size_before_axis,
                  const int all_size_axis, const T* input, T** outputs, cudaStream_t cuda_stream);
 #endif  // MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMPL_SPLIT_H_