diff --git a/mace/core/mace.cc b/mace/core/mace.cc
index de6c93534e08bbdbcb71429a5dcddf69c2d50f11..9d0d0c76a2db2525906685274e8636817f10fd2c 100644
--- a/mace/core/mace.cc
+++ b/mace/core/mace.cc
@@ -493,12 +493,11 @@ MaceEngine::MaceEngine(const NetDef *net_def, DeviceType device_type):
   ws_->CreateTensor("mace_input_node:0", GetDeviceAllocator(device_type_), DT_FLOAT);
   net_ = std::move(CreateNet(*net_def, ws_.get(), device_type));
 }
-MaceEngine::~MaceEngine(){}
+MaceEngine::~MaceEngine() = default;
 bool MaceEngine::Run(const float *input,
                      const std::vector<index_t> &input_shape,
                      float *output) {
   MACE_CHECK(output != nullptr, "output ptr cannot be NULL");
-
   Tensor *input_tensor =
       ws_->CreateTensor("mace_input_node:0", GetDeviceAllocator(device_type_), DT_FLOAT);
   input_tensor->Resize(input_shape);
@@ -518,6 +517,7 @@ bool MaceEngine::Run(const float *input,
     auto shape = output_tensor->shape();
     int64_t output_size = std::accumulate(shape.begin(), shape.end(), 1,
                                           std::multiplies<int64_t>());
+    // TODO: check for overflow exception.
     std::memcpy(output, output_tensor->data<float>(),
                 output_size * sizeof(float));
     return true;
diff --git a/mace/core/public/mace.h b/mace/core/public/mace.h
index 088d7f9cacde4e800e73f5ffd5cce91d18304e53..1b0d3ceb5cfae0ae6414d5f4686732e200088b7c 100644
--- a/mace/core/public/mace.h
+++ b/mace/core/public/mace.h
@@ -310,6 +310,9 @@ class MaceEngine {
   bool Run(const float *input,
            const std::vector<int64_t> &input_shape,
            float *output);
+  MaceEngine(const MaceEngine&) = delete;
+  MaceEngine &operator=(const MaceEngine&) = delete;
+
  private:
   DeviceType device_type_;
   std::unique_ptr<Workspace> ws_;
diff --git a/mace/examples/mace_run.cc b/mace/examples/mace_run.cc
index cb8a97257836042a9cfea81f640971215d68d5ec..ccdc3c7c1a202fd3f61c3d97c6ab85f5484fa423 100644
--- a/mace/examples/mace_run.cc
+++ b/mace/examples/mace_run.cc
@@ -173,9 +173,13 @@ int main(int argc, char **argv) {
 
   // load input
   ifstream in_file(input_file, ios::in | ios::binary);
-  in_file.read(reinterpret_cast<char *>(input_data.get()),
-               input_size * sizeof(float));
-  in_file.close();
+  if (in_file.is_open()) {
+    in_file.read(reinterpret_cast<char *>(input_data.get()),
+                 input_size * sizeof(float));
+    in_file.close();
+  } else {
+    LOG(ERROR) << "Open input file failed";
+  }
 
   // Init model
   VLOG(0) << "Run init";
diff --git a/mace/kernels/opencl/buffer_to_image.cc b/mace/kernels/opencl/buffer_to_image.cc
index b28f113b0b748f0a0eb9ab309a22f45a8d01c866..1bc6f14590e6c358a387997daef2ac95b88f67f8 100644
--- a/mace/kernels/opencl/buffer_to_image.cc
+++ b/mace/kernels/opencl/buffer_to_image.cc
@@ -64,7 +64,7 @@ void BufferToImageFunctor<DeviceType::OPENCL, T>::operator()(Tensor *buffer,
                          image_shape[1],
                          1};
   const uint32_t kwg_size = runtime->GetKernelMaxWorkGroupSize(b2f_kernel);
-  const std::vector<uint32_t> lws = {kwg_size, 1, 1};
+  const std::vector<uint32_t> lws = {16, 64, 1};
   cl::Event event;
   cl_int error = runtime->command_queue().enqueueNDRangeKernel(
       b2f_kernel, cl::NullRange,
diff --git a/mace/kernels/opencl/cl/space_to_batch.cl b/mace/kernels/opencl/cl/space_to_batch.cl
index 5d098d865b3dac310bf14869114e219f8cf92570..9ad635099ea3caa249a6b1f49b4eb206553219f3 100644
--- a/mace/kernels/opencl/cl/space_to_batch.cl
+++ b/mace/kernels/opencl/cl/space_to_batch.cl
@@ -1,58 +1,76 @@
 #include <common.h>
 
-// Supported data type: all
-__kernel void space_to_batch(__global DATA_TYPE *space_data_ptr,
-                             __global const int *block_shape_ptr,
-                             __global const int *paddings_ptr,
-                             __private const int space_batch,
-                             __private const int space_channel,
+__kernel void space_to_batch(__read_only image2d_t space_data,
+                             __write_only image2d_t batch_data,
+                             __private const int block_height,
+                             __private const int block_width,
+                             __private const int padding_height,
+                             __private const int padding_width,
                              __private const int space_height,
                              __private const int space_width,
                              __private const int batch_height,
-                             __private const int batch_width,
-                             __private const int b2s,
-                             __global DATA_TYPE* batch_data_ptr) {
-  int batch_idx = get_global_id(0);
-  int batch_channel_idx = get_global_id(1);
-  int batch_pixel_idx = get_global_id(2);
-
-  const int block_height = block_shape_ptr[0];
-  const int block_width = block_shape_ptr[1];
-  const int padding_height_start = paddings_ptr[0];
-  const int padding_width_start = paddings_ptr[2];
-
-  const int batch_pixel_height_idx = batch_pixel_idx / batch_width;
-  const int batch_pixel_width_idx = batch_pixel_idx % batch_width;
-
-  const int block_size = block_height * block_width;
-  const int space_idx = batch_idx / block_size;
-  const int remaining_batch_idx = batch_idx % block_size;
-  int space_pixel_height_idx = (remaining_batch_idx / block_width) +
-                               batch_pixel_height_idx * block_height;
-  int space_pixel_width_idx = (remaining_batch_idx % block_width) +
-                              batch_pixel_width_idx * block_width;
-
-  const int batch_data_offset = batch_idx * (space_channel * batch_height * batch_width) +
-                                (batch_channel_idx * batch_height * batch_width) +
-                                batch_pixel_height_idx * batch_width +
-                                batch_pixel_width_idx;
-
-  space_pixel_height_idx -= padding_height_start;
-  space_pixel_width_idx -= padding_width_start;
-  const int space_data_offset = space_idx * (space_channel * space_height * space_width) +
-                                (batch_channel_idx * space_height * space_width) +
-                                space_pixel_height_idx * space_width +
-                                space_pixel_width_idx;
-  if (space_pixel_height_idx < 0 || space_pixel_height_idx >= space_height ||
-      space_pixel_width_idx < 0 || space_pixel_width_idx >= space_width) {
-    if (!b2s) {
-        *(batch_data_ptr + batch_data_offset) = 0;
-    }
-  } else {
-    if (b2s) {
-      *(space_data_ptr + space_data_offset) = *(batch_data_ptr + batch_data_offset);
-    } else {
-      *(batch_data_ptr + batch_data_offset) = *(space_data_ptr + space_data_offset);
-    }
+                             __private const int batch_width) {
+  const int chan_idx = get_global_id(0);
+  const int batch_w_idx = get_global_id(1);
+  const int batch_hb_idx = get_global_id(2);
+
+  const int batch_b_idx = batch_hb_idx / batch_height;
+  const int batch_h_idx = batch_hb_idx % batch_height;
+
+  const int block_size = mul24(block_height, block_width);
+  const int space_b_idx = batch_b_idx / block_size;
+  const int remaining_batch_idx = batch_b_idx % block_size;
+  const int space_h_idx = (remaining_batch_idx / block_width) +
+      mul24(batch_h_idx, block_height) - padding_height;
+  const int space_w_idx = (remaining_batch_idx % block_width) +
+      mul24(batch_w_idx, block_width) - padding_width;
+
+  const int space_coord_x = select(mul24(chan_idx, space_width) + space_w_idx,
+                                   -1,
+                                   space_w_idx < 0 || space_w_idx >= space_width);
+  const int space_coord_y = select(mul24(space_b_idx, space_height) + space_h_idx,
+                                   -1,
+                                   space_h_idx < 0 || space_h_idx >= space_height);
+  int2 space_coord = (int2)(space_coord_x,
+                            space_coord_y);
+  DATA_TYPE4 value = READ_IMAGET(space_data, SAMPLER, space_coord);
+
+  int2 batch_coord = (int2)(mul24(chan_idx, batch_width) + batch_w_idx, batch_hb_idx);
+  WRITE_IMAGET(batch_data, batch_coord, value);
+}
+
+__kernel void batch_to_space(__read_only image2d_t batch_data,
+                             __write_only image2d_t space_data,
+                             __private const int block_height,
+                             __private const int block_width,
+                             __private const int padding_height,
+                             __private const int padding_width,
+                             __private const int space_height,
+                             __private const int space_width,
+                             __private const int batch_height,
+                             __private const int batch_width) {
+  const int chan_idx = get_global_id(0);
+  const int batch_w_idx = get_global_id(1);
+  const int batch_hb_idx = get_global_id(2);
+
+  const int batch_b_idx = batch_hb_idx / batch_height;
+  const int batch_h_idx = batch_hb_idx % batch_height;
+
+  const int block_size = mul24(block_height, block_width);
+  const int space_b_idx = batch_b_idx / block_size;
+  const int remaining_batch_idx = batch_b_idx % block_size;
+  const int space_h_idx = (remaining_batch_idx / block_width) +
+      mul24(batch_h_idx, block_height) - padding_height;
+  const int space_w_idx = (remaining_batch_idx % block_width) +
+      mul24(batch_w_idx, block_width) - padding_width;
+
+  if (0 <= space_w_idx && space_w_idx < space_width &&
+      0 <= space_h_idx && space_h_idx < space_height) {
+    int2 batch_coord = (int2)(mul24(chan_idx, batch_width) + batch_w_idx, batch_hb_idx);
+    DATA_TYPE4 value = READ_IMAGET(batch_data, SAMPLER, batch_coord);
+
+    int2 space_coord = (int2)(mul24(chan_idx, space_width) + space_w_idx,
+                              space_b_idx * space_height + space_h_idx);
+    WRITE_IMAGET(space_data, space_coord, value);
   }
 }
diff --git a/mace/kernels/opencl/space_to_batch_opecl.cc b/mace/kernels/opencl/space_to_batch_opecl.cc
deleted file mode 100644
index 32ada21a210091a02033babb8cefd08517b43e4a..0000000000000000000000000000000000000000
--- a/mace/kernels/opencl/space_to_batch_opecl.cc
+++ /dev/null
@@ -1,65 +0,0 @@
-//
-// Copyright (c) 2017 XiaoMi All rights reserved.
-//
-
-#ifndef MACE_KERNELS_OPENCL_SPACE_TO_BATCH_H_
-#define MACE_KERNELS_OPENCL_SPACE_TO_BATCH_H_
-
-#include "mace/core/common.h"
-#include "mace/core/runtime/opencl/opencl_runtime.h"
-#include "mace/kernels/space_to_batch.h"
-#include "mace/kernels/opencl/helper.h"
-
-namespace mace {
-namespace kernels {
-
-template <>
-void SpaceToBatchFunctor<DeviceType::OPENCL, float>::operator()(Tensor *space_tensor,
-                                                                const Tensor *block_shape_tensor,
-                                                                const Tensor *paddings_tensor,
-                                                                Tensor *batch_tensor,
-                                                                StatsFuture *future) {
-  auto runtime = OpenCLRuntime::Global();
-  std::set<std::string> built_options;
-  built_options.emplace("-DDATA_TYPE=" + DtToUpstreamCLDt(space_tensor->dtype()));
-  auto s2b_kernel = runtime->BuildKernel("space_to_batch", "space_to_batch", built_options);
-
-  uint32_t idx = 0;
-  s2b_kernel.setArg(idx++, *(static_cast<cl::Buffer *>(space_tensor->buffer())));
-  s2b_kernel.setArg(idx++, *(static_cast<const cl::Buffer *>(block_shape_tensor->buffer())));
-  s2b_kernel.setArg(idx++, *(static_cast<const cl::Buffer *>(paddings_tensor->buffer())));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(space_tensor->dim(0)));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(space_tensor->dim(1)));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(space_tensor->dim(2)));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(space_tensor->dim(3)));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(batch_tensor->dim(2)));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(batch_tensor->dim(3)));
-  s2b_kernel.setArg(idx++, static_cast<int32_t>(b2s_));
-  s2b_kernel.setArg(idx++, *(static_cast<cl::Buffer *>(batch_tensor->buffer())));
-
-  const uint32_t gws[3] = {static_cast<uint32_t>(batch_tensor->dim(0)),
-                           static_cast<uint32_t>(batch_tensor->dim(1)),
-                           static_cast<uint32_t>(batch_tensor->dim(2) * batch_tensor->dim(3))};
-  const uint32_t lws[3] = {static_cast<uint32_t>(1),
-                           static_cast<uint32_t>(8),
-                           static_cast<uint32_t>(128)};
-  cl::Event event;
-  cl_int error = runtime->command_queue().enqueueNDRangeKernel(
-      s2b_kernel, cl::NullRange,
-      cl::NDRange(gws[0], gws[1], gws[2]),
-      cl::NDRange(lws[0], lws[1], lws[2]),
-      nullptr, &event);
-  MACE_CHECK(error == CL_SUCCESS);
-  if (future != nullptr) {
-    future->wait_fn = [runtime, event](CallStats *stats) {
-      event.wait();
-      if (stats != nullptr) {
-        runtime->GetCallStats(event, stats);
-      }
-    };
-  }
-}
-
-} //  namespace kernels
-} //  namespace mace
-#endif //  MACE_KERNELS_OPENCL_SPACE_TO_BATCH_H_
diff --git a/mace/kernels/opencl/space_to_batch_opencl.cc b/mace/kernels/opencl/space_to_batch_opencl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4a8fb2b8810bb620e768d5d8364b0f6b2206a2d6
--- /dev/null
+++ b/mace/kernels/opencl/space_to_batch_opencl.cc
@@ -0,0 +1,119 @@
+//
+// Copyright (c) 2017 XiaoMi All rights reserved.
+//
+
+#ifndef MACE_KERNELS_OPENCL_SPACE_TO_BATCH_H_
+#define MACE_KERNELS_OPENCL_SPACE_TO_BATCH_H_
+
+#include "mace/core/common.h"
+#include "mace/core/runtime/opencl/opencl_runtime.h"
+#include "mace/kernels/space_to_batch.h"
+#include "mace/kernels/opencl/helper.h"
+#include "mace/utils/utils.h"
+#include "mace/utils/tuner.h"
+
+namespace mace {
+namespace kernels {
+
+template <typename T>
+void SpaceToBatchFunctor<DeviceType::OPENCL, T>::operator()(Tensor *space_tensor,
+                                                            const std::vector<index_t> &output_shape,
+                                                            Tensor *batch_tensor,
+                                                            StatsFuture *future) {
+  std::vector<size_t> output_image_shape;
+  CalImage2DShape(output_shape, BufferType::IN_OUT, output_image_shape);
+  const char *kernel_name = nullptr;
+  if (b2s_) {
+    space_tensor->ResizeImage(output_shape, output_image_shape);
+    kernel_name = "batch_to_space";
+  } else {
+    batch_tensor->ResizeImage(output_shape, output_image_shape);
+    kernel_name = "space_to_batch";
+  }
+  auto runtime = OpenCLRuntime::Global();
+  std::set<std::string> built_options;
+  built_options.emplace("-DDATA_TYPE=" + DtToCLDt(DataTypeToEnum<T>::value));
+  built_options.emplace("-DCMD_DATA_TYPE=" + DtToCLCMDDt(DataTypeToEnum<T>::value));
+  auto s2b_kernel = runtime->BuildKernel("space_to_batch", kernel_name, built_options);
+
+  uint32_t idx = 0;
+  if (b2s_) {
+    s2b_kernel.setArg(idx++, *(static_cast<const cl::Image2D *>(batch_tensor->buffer())));
+    s2b_kernel.setArg(idx++, *(static_cast<cl::Image2D *>(space_tensor->buffer())));
+  } else {
+    s2b_kernel.setArg(idx++, *(static_cast<const cl::Image2D *>(space_tensor->buffer())));
+    s2b_kernel.setArg(idx++, *(static_cast<cl::Image2D *>(batch_tensor->buffer())));
+  }
+  s2b_kernel.setArg(idx++, block_shape_[0]);
+  s2b_kernel.setArg(idx++, block_shape_[1]);
+  s2b_kernel.setArg(idx++, paddings_[0]);
+  s2b_kernel.setArg(idx++, paddings_[2]);
+  s2b_kernel.setArg(idx++, static_cast<int32_t>(space_tensor->dim(1)));
+  s2b_kernel.setArg(idx++, static_cast<int32_t>(space_tensor->dim(2)));
+  s2b_kernel.setArg(idx++, static_cast<int32_t>(batch_tensor->dim(1)));
+  s2b_kernel.setArg(idx++, static_cast<int32_t>(batch_tensor->dim(2)));
+
+  const uint32_t chan_blk = RoundUpDiv4<uint32_t>(batch_tensor->dim(3));
+  const uint32_t gws[3] = {chan_blk,
+                           static_cast<uint32_t>(batch_tensor->dim(2)),
+                           static_cast<uint32_t>(batch_tensor->dim(0) * batch_tensor->dim(1))};
+  const std::vector<uint32_t> lws = {8, 16, 8};
+  const uint32_t kwg_size = runtime->GetKernelMaxWorkGroupSize(s2b_kernel);
+  auto params_generator = [&]() -> std::vector<std::vector<uint32_t>> {
+    std::vector<uint32_t> local_ws(3, 0);
+    local_ws[0] = std::min<uint32_t>(chan_blk, kwg_size);
+    local_ws[1] = std::min<uint32_t>(32, kwg_size / local_ws[0]);
+    local_ws[2] = std::min<uint32_t>(32, kwg_size / (local_ws[0] * local_ws[1]));
+    return {{local_ws[0], local_ws[1], local_ws[2]},
+            {4, 32, 8},
+            {4, 64, 4},
+            {4, 128, 2},
+            {8, 16, 8},
+            {8, 32, 4},
+            {8, 64, 2},
+            {16, 8, 8},
+            {16, 16, 4},
+            {16, 32, 2},
+            {32, 8, 4},
+            {32, 16, 2},
+            {64, 4, 4}};
+  };
+  cl::Event event;
+  auto func = [&](const std::vector<uint32_t> &params) -> cl_int {
+    cl_int error = runtime->command_queue().enqueueNDRangeKernel(
+        s2b_kernel, cl::NullRange,
+        cl::NDRange(gws[0], gws[1], gws[2]),
+        cl::NDRange(params[0], params[1], params[2]),
+        nullptr, &event);
+
+    MACE_CHECK(error == CL_SUCCESS) << "Error code: " << error;
+    return error;
+  };
+  std::stringstream ss;
+  ss << kernel_name << "_"
+     << batch_tensor->dim(0) << "_"
+     << batch_tensor->dim(1) << "_"
+     << batch_tensor->dim(2) << "_"
+     << batch_tensor->dim(3);
+  OpenCLProfilingTimer timer(&event);
+  Tuner<uint32_t>::Get()->template TuneOrRun<cl_int>(ss.str(),
+                                                     lws,
+                                                     params_generator,
+                                                     func,
+                                                     &timer);
+  if (future != nullptr) {
+    future->wait_fn = [runtime, event](CallStats *stats) {
+      event.wait();
+      if (stats != nullptr) {
+        runtime->GetCallStats(event, stats);
+      }
+    };
+  }
+}
+
+template struct SpaceToBatchFunctor<DeviceType::OPENCL, float>;
+template struct SpaceToBatchFunctor<DeviceType::OPENCL, half>;
+
+} //  namespace kernels
+} //  namespace mace
+#endif //  MACE_KERNELS_OPENCL_SPACE_TO_BATCH_H_
diff --git a/mace/kernels/space_to_batch.h b/mace/kernels/space_to_batch.h
index d868329223cd798c001710b5ff94a917acc91f2e..9e2fd8762c4a7e8fa5d0d3b405d8701a6a914ed7 100644
--- a/mace/kernels/space_to_batch.h
+++ b/mace/kernels/space_to_batch.h
@@ -12,27 +12,46 @@
 namespace mace {
 namespace kernels {
 
-template <DeviceType D, typename T>
-struct SpaceToBatchFunctor {
-  SpaceToBatchFunctor(const bool b2s = false): b2s_(b2s){}
+struct SpaceToBatchFunctorBase {
+  SpaceToBatchFunctorBase(const std::vector<int> &paddings,
+                          const std::vector<int> &block_shape,
+                          bool b2s):
+      paddings_(paddings.begin(), paddings.end()),
+      block_shape_(block_shape.begin(), block_shape.end()),
+      b2s_(b2s)
+  {}
+
+  std::vector<int> paddings_;
+  std::vector<int> block_shape_;
+  bool b2s_;
+};
 
-  void operator()(Tensor *input_tensor,
-                  const Tensor *block_shape_tensor,
-                  const Tensor *paddings_tensor,
-                  Tensor *output_tensor,
+template <DeviceType D, typename T>
+struct SpaceToBatchFunctor : SpaceToBatchFunctorBase{
+  SpaceToBatchFunctor(const std::vector<int> &paddings,
+                      const std::vector<int> &block_shape,
+                      bool b2s): SpaceToBatchFunctorBase(paddings, block_shape, b2s){}
+
+  void operator()(Tensor *space_tensor,
+                  const std::vector<index_t> &output_shape,
+                  Tensor *batch_tensor,
                   StatsFuture *future) {
     MACE_NOT_IMPLEMENTED;
   }
-
-  bool b2s_;
 };
 
-template <>
-void SpaceToBatchFunctor<DeviceType::OPENCL, float>::operator()(Tensor *input_tensor,
-                                                                const Tensor *block_shape_tensor,
-                                                                const Tensor *paddings_tensor,
-                                                                Tensor *output,
-                                                                StatsFuture *future);
+template <typename T>
+struct SpaceToBatchFunctor<DeviceType::OPENCL, T>: SpaceToBatchFunctorBase{
+  SpaceToBatchFunctor(const std::vector<int> &paddings,
+                      const std::vector<int> &block_shape,
+                      bool b2s): SpaceToBatchFunctorBase(paddings, block_shape, b2s){}
+
+  void operator()(Tensor *space_tensor,
+                  const std::vector<index_t> &output_shape,
+                  Tensor *batch_tensor,
+                  StatsFuture *future);
+
+};
 
 }  // namespace kernels
 }  // namespace mace
diff --git a/mace/ops/batch_to_space.cc b/mace/ops/batch_to_space.cc
index 61de748b0fc8b8928eb99f8ecdc7e9dc72bca932..4e4ea6610e408889b8a4ad29a786fdd33853703a 100644
--- a/mace/ops/batch_to_space.cc
+++ b/mace/ops/batch_to_space.cc
@@ -10,5 +10,9 @@ REGISTER_OPENCL_OPERATOR(OpKeyBuilder("BatchToSpaceND")
                              .TypeConstraint<float>("T")
                              .Build(),
                          BatchToSpaceNDOp<DeviceType::OPENCL, float>);
+REGISTER_OPENCL_OPERATOR(OpKeyBuilder("BatchToSpaceND")
+                             .TypeConstraint<half>("T")
+                             .Build(),
+                         BatchToSpaceNDOp<DeviceType::OPENCL, half>);
 
 }  //  namespace mace
diff --git a/mace/ops/batch_to_space.h b/mace/ops/batch_to_space.h
index 286b67731cd7a00f338e2db62b3d81ece60990ec..59f8e03b0c6dd47a642efdffe72ae00988826a08 100644
--- a/mace/ops/batch_to_space.h
+++ b/mace/ops/batch_to_space.h
@@ -12,63 +12,58 @@
 
 namespace mace {
 
-static void BatchToSpaceHelper(const Tensor *input_tensor,
-                               const Tensor *block_shape_tensor,
-                               const Tensor *cropped_tensor,
-                               Tensor *output) {
-  MACE_CHECK(input_tensor->dim_size() == 4, "Input's shape should be 4D");
-  MACE_CHECK(block_shape_tensor->dim_size() == 1, "Block's shape should be 1D");
-  MACE_CHECK(cropped_tensor->dim_size() == 2, "Paddings' shape should be 2D");
-
-  const index_t block_dims = block_shape_tensor->dim(0);
-  MACE_CHECK(block_dims == cropped_tensor->dim(0) && 2 == cropped_tensor->dim(1));
-  // TODO change tensor to attribute if needed based on the benchmark
-  Tensor::MappingGuard block_shape_tensor_mapper(block_shape_tensor);
-  Tensor::MappingGuard cropped_tensor_mapper(cropped_tensor);
-  const int *block_shape_ptr = block_shape_tensor->data<int>();
-  const int *cropped_ptr = cropped_tensor->data<int>();
-  std::vector<index_t> output_shape(4, 0);
-  index_t block_shape_product = 1;
-  for (uint32_t block_dim = 0; block_dim < block_dims; ++block_dim) {
-    MACE_CHECK(block_shape_ptr[block_dim] > 1, "block_shape's value should be great to 1");
-    const index_t block_shape_value = block_shape_ptr[block_dim];
-    const index_t cropped_input_size = input_tensor->dim(block_dim + 2) * block_shape_value
-                                      - *cropped_ptr
-                                      - *(cropped_ptr+1);
-    MACE_CHECK(cropped_input_size >= 0,
-               "cropped size must be non-negative");
-    block_shape_product *= block_shape_value;
-    output_shape[block_dim+2] = cropped_input_size;
-    cropped_ptr += 2;
-  }
-  output_shape[0] = input_tensor->dim(0) / block_shape_product;
-  output_shape[1] = input_tensor->dim(1);
-
-  output->Resize(output_shape);
-}
-
-template <DeviceType D, typename T>
-class BatchToSpaceNDOp: public Operator<D, T> {
+template<DeviceType D, typename T>
+class BatchToSpaceNDOp : public Operator<D, T> {
  public:
   BatchToSpaceNDOp(const OperatorDef &op_def, Workspace *ws)
-      : Operator<D, T>(op_def, ws), functor_(true) {}
+      : Operator<D, T>(op_def, ws),
+        functor_(
+            OperatorBase::GetRepeatedArgument<int>("crops", {0, 0, 0, 0}),
+            OperatorBase::GetRepeatedArgument<int>("block_shape", {1, 1}),
+            true) {}
 
   bool Run(StatsFuture *future) override {
-    const Tensor *input_tensor = this->Input(INPUT);
-    const Tensor *block_shape_tensor = this->Input(BLOCK_SHAPE);
-    const Tensor *cropped_tensor = this->Input(CROPS);
-    Tensor *output = this->Output(OUTPUT);
+    const Tensor *batch_tensor = this->Input(INPUT);
+    Tensor *space_tensor = this->Output(OUTPUT);
 
-    BatchToSpaceHelper(input_tensor, block_shape_tensor, cropped_tensor, output);
-    functor_(output, block_shape_tensor, cropped_tensor, const_cast<Tensor*>(input_tensor), future);
+    std::vector<index_t> output_shape(4, 0);
+    CalculateOutputShape(batch_tensor, space_tensor, output_shape.data());
+    functor_(space_tensor, output_shape, const_cast<Tensor *>(batch_tensor), future);
     return true;
   }
 
+ private:
+  inline void CalculateOutputShape(const Tensor *input_tensor,
+                                   Tensor *output,
+                                   index_t *output_shape) {
+    auto crops = OperatorBase::GetRepeatedArgument<int>("crops", {0, 0, 0, 0});
+    auto block_shape = OperatorBase::GetRepeatedArgument<int>("block_shape", {1, 1});
+    MACE_CHECK(input_tensor->dim_size() == 4, "Input's shape should be 4D");
+    MACE_CHECK(block_shape.size() == 2, "Block's shape should be 1D");
+    MACE_CHECK(crops.size() == 4, "Crops' shape should be 2D");
+
+    const index_t block_dims = block_shape.size();
+    index_t block_shape_product = 1;
+    for (uint32_t block_dim = 0; block_dim < block_dims; ++block_dim) {
+      MACE_CHECK(block_shape[block_dim] > 1, "block_shape's value should be great to 1");
+      const index_t block_shape_value = block_shape[block_dim];
+      const index_t cropped_input_size = input_tensor->dim(block_dim + 1) * block_shape_value
+          - crops[block_dim * 2]
+          - crops[block_dim * 2 + 1];
+      MACE_CHECK(cropped_input_size >= 0,
+                 "cropped size must be non-negative");
+      block_shape_product *= block_shape_value;
+      output_shape[block_dim + 1] = cropped_input_size;
+    }
+    output_shape[0] = input_tensor->dim(0) / block_shape_product;
+    output_shape[3] = input_tensor->dim(3);
+  }
+
  private:
   kernels::SpaceToBatchFunctor<D, T> functor_;
 
  protected:
-  OP_INPUT_TAGS(INPUT, BLOCK_SHAPE, CROPS);
+  OP_INPUT_TAGS(INPUT);
   OP_OUTPUT_TAGS(OUTPUT);
 };
 
diff --git a/mace/ops/batch_to_space_benchmark.cc b/mace/ops/batch_to_space_benchmark.cc
index 89e100f1ebfe3ac61db1a34e4b5b4d446ec7d4d9..a3a0e0b6ee508e0f1333e33b70dabf982c9cd903 100644
--- a/mace/ops/batch_to_space_benchmark.cc
+++ b/mace/ops/batch_to_space_benchmark.cc
@@ -9,23 +9,19 @@
 namespace mace {
 template <DeviceType D, typename T>
 static void BMBatchToSpace(
-    int iters, int batch, int channels, int height, int width) {
+    int iters, int batch, int channels, int height, int width, int arg) {
   mace::testing::StopTiming();
 
   OpsTestNet net;
+  net.AddRandomInput<D, float>("Input", {batch, height, width, channels});
+  BufferToImage<D, float>(net, "Input", "InputImage", kernels::BufferType::IN_OUT);
   OpDefBuilder("BatchToSpaceND", "BatchToSpaceNDTest")
-      .Input("Input")
-      .Input("BlockShape")
-      .Input("Crops")
-      .Output("Output")
+      .Input("InputImage")
+      .Output("OutputImage")
+      .AddIntsArg("crops", {0, 0, 0, 0})
+      .AddIntsArg("block_shape", {arg, arg})
       .Finalize(net.NewOperatorDef());
 
-  // Add input data
-  net.AddRandomInput<D, float>("Input", {batch, channels, height, width});
-  net.AddInputFromArray<D, int>(
-      "BlockShape", {2}, {2, 2});
-  net.AddInputFromArray<D, int>("Crops", {2, 2}, {0,1,0,1});
-
   // Warm-up
   for (int i = 0; i < 5; ++i) {
     net.RunOp(D);
@@ -39,18 +35,20 @@ static void BMBatchToSpace(
   net.Sync();
 }
 
-#define BM_BATCH_TO_SPACE_MACRO(N, C, H, W, TYPE, DEVICE)                  \
-  static void BM_BATCH_TO_SPACE_##N##_##C##_##H##_##W##_##TYPE##_##DEVICE( \
+#define BM_BATCH_TO_SPACE_MACRO(N, H, W, C, ARG, TYPE, DEVICE)             \
+  static void BM_BATCH_TO_SPACE_##N##_##H##_##W##_##C##_##ARG##_##TYPE##_##DEVICE( \
       int iters) {                                                     \
     const int64_t tot = static_cast<int64_t>(iters) * N * C * H * W;   \
     mace::testing::ItemsProcessed(tot);                                \
     mace::testing::BytesProcessed(tot *(sizeof(TYPE)));                \
-    BMBatchToSpace<DEVICE, TYPE>(iters, N, C, H, W);                   \
+    BMBatchToSpace<DEVICE, TYPE>(iters, N, C, H, W, ARG);              \
   }                                                                    \
-  BENCHMARK(BM_BATCH_TO_SPACE_##N##_##C##_##H##_##W##_##TYPE##_##DEVICE)
+  BENCHMARK(BM_BATCH_TO_SPACE_##N##_##H##_##W##_##C##_##ARG##_##TYPE##_##DEVICE)
 
-#define BM_BATCH_TO_SPACE(N, C, H, W, TYPE)       \
-  BM_BATCH_TO_SPACE_MACRO(N, C, H, W, TYPE, OPENCL);
+#define BM_BATCH_TO_SPACE(N, H, W, C, ARG, TYPE)       \
+  BM_BATCH_TO_SPACE_MACRO(N, H, W, C, ARG, TYPE, OPENCL);
 
-BM_BATCH_TO_SPACE(128, 128, 8, 8, float);
+BM_BATCH_TO_SPACE(128, 8, 8, 128, 2, float);
+BM_BATCH_TO_SPACE(4, 128, 128, 32, 2, float);
+BM_BATCH_TO_SPACE(16, 64, 64, 32, 4, float);
 }  //  namespace mace
\ No newline at end of file
diff --git a/mace/ops/ops_test_util.h b/mace/ops/ops_test_util.h
index 04bb3c67cf1b896ca617f92a6abbad18bf29abf1..ea86167ab681d8deab7589777bfb3135bf51da75 100644
--- a/mace/ops/ops_test_util.h
+++ b/mace/ops/ops_test_util.h
@@ -322,9 +322,18 @@ struct Expector<EXP_TYPE, RES_TYPE, true> {
     Tensor::MappingGuard y_mapper(&y);
     auto a = x.data<EXP_TYPE>();
     auto b = y.data<RES_TYPE>();
-    for (int i = 0; i < x.size(); ++i) {
-      EXPECT_NEAR(a[i], b[i], abs_err) << "a = " << a << " b = " << b
-                                       << " index = " << i;
+    for (int n = 0; n < x.dim(0); ++n) {
+      for (int h = 0; h < x.dim(1); ++h) {
+        for (int w = 0; w < x.dim(2); ++w) {
+          for (int c = 0; c < x.dim(3); ++c) {
+            EXPECT_NEAR(*a, *b, abs_err) << "with index = ["
+                                         << n << ", " << h << ", "
+                                         << w << ", " << c << "]";
+            a++;
+            b++;
+          }
+        }
+      }
     }
   }
 
diff --git a/mace/ops/space_to_batch.cc b/mace/ops/space_to_batch.cc
index fec9866872e94aa4aa1dd2f218d0585ebdc776c1..9b24f591d7e812262c4bfbb6ee9fac07cb2b4b3c 100644
--- a/mace/ops/space_to_batch.cc
+++ b/mace/ops/space_to_batch.cc
@@ -10,5 +10,9 @@ REGISTER_OPENCL_OPERATOR(OpKeyBuilder("SpaceToBatchND")
                              .TypeConstraint<float>("T")
                              .Build(),
                          SpaceToBatchNDOp<DeviceType::OPENCL, float>);
+REGISTER_OPENCL_OPERATOR(OpKeyBuilder("SpaceToBatchND")
+                             .TypeConstraint<half>("T")
+                             .Build(),
+                         SpaceToBatchNDOp<DeviceType::OPENCL, half>);
 
 }  //  namespace mace
diff --git a/mace/ops/space_to_batch.h b/mace/ops/space_to_batch.h
index 6abc7772e71a55baeb89592661c745e9598c09ed..787b82e6b49abfc6e51a826c2e52ad7b1373d950 100644
--- a/mace/ops/space_to_batch.h
+++ b/mace/ops/space_to_batch.h
@@ -12,62 +12,59 @@
 
 namespace mace {
 
-static void SpaceToBatchHelper(const Tensor *input_tensor,
-                               const Tensor *block_shape_tensor,
-                               const Tensor *paddings_tensor,
-                               Tensor *output) {
-  MACE_CHECK(input_tensor->dim_size() == 4, "Input's shape should be 4D");
-  MACE_CHECK(block_shape_tensor->dim_size() == 1, "Block's shape should be 1D");
-  MACE_CHECK(paddings_tensor->dim_size() == 2, "Paddings' shape should be 2D");
-
-  const index_t block_dims = block_shape_tensor->dim(0);
-  MACE_CHECK(block_dims == paddings_tensor->dim(0) && 2 == paddings_tensor->dim(1));
-  Tensor::MappingGuard block_shape_tensor_mapper(block_shape_tensor);
-  Tensor::MappingGuard padding_tensor_mapper(paddings_tensor);
-  const int *block_shape_ptr = block_shape_tensor->data<int>();
-  const int *paddings_ptr = paddings_tensor->data<int>();
-  std::vector<index_t> output_shape(4, 0);
-  index_t block_shape_product = 1;
-  for (uint32_t block_dim = 0; block_dim < block_dims; ++block_dim) {
-    MACE_CHECK(block_shape_ptr[block_dim] > 1, "block_shape's value should be great to 1");
-    const index_t block_shape_value = block_shape_ptr[block_dim];
-    const index_t padded_input_size = input_tensor->dim(block_dim + 2)
-                                      + *paddings_ptr
-                                      + *(paddings_ptr+1);
-    MACE_CHECK(padded_input_size % block_shape_value == 0,
-               "padded input is not divisible by block_shape");
-    block_shape_product *= block_shape_value;
-    output_shape[block_dim+2] = padded_input_size / block_shape_value;
-    paddings_ptr += 2;
-  }
-  output_shape[0] = input_tensor->dim(0) * block_shape_product;
-  output_shape[1] = input_tensor->dim(1);
-
-  output->Resize(output_shape);
-}
-
-template <DeviceType D, typename T>
+template<DeviceType D, typename T>
 class SpaceToBatchNDOp : public Operator<D, T> {
  public:
   SpaceToBatchNDOp(const OperatorDef &op_def, Workspace *ws)
-      : Operator<D, T>(op_def, ws) {}
+      : Operator<D, T>(op_def, ws),
+        functor_(
+            OperatorBase::GetRepeatedArgument<int>("paddings", {0, 0, 0, 0}),
+            OperatorBase::GetRepeatedArgument<int>("block_shape", {1, 1}),
+            false) {}
 
   bool Run(StatsFuture *future) override {
-    const Tensor *input_tensor = this->Input(INPUT);
-    const Tensor *block_shape_tensor = this->Input(BLOCK_SHAPE);
-    const Tensor *paddings_tensor = this->Input(PADDINGS);
-    Tensor *output = this->Output(OUTPUT);
+    const Tensor *space_tensor = this->Input(INPUT);
+    Tensor *batch_tensor = this->Output(OUTPUT);
 
-    SpaceToBatchHelper(input_tensor, block_shape_tensor, paddings_tensor, output);
-    functor_(const_cast<Tensor*>(input_tensor), block_shape_tensor, paddings_tensor, output, future);
+    std::vector<index_t> output_shape(4, 0);
+    CalculateOutputShape(space_tensor, batch_tensor, output_shape.data());
+    functor_(const_cast<Tensor *>(space_tensor), output_shape, batch_tensor, future);
     return true;
   }
 
+ private:
+
+  inline void CalculateOutputShape(const Tensor *input_tensor,
+                                   Tensor *output,
+                                   index_t *output_shape) {
+    auto paddings = OperatorBase::GetRepeatedArgument<int>("paddings", {0, 0, 0, 0});
+    auto block_shape = OperatorBase::GetRepeatedArgument<int>("block_shape", {1, 1});
+    MACE_CHECK(input_tensor->dim_size() == 4, "Input's shape should be 4D");
+    MACE_CHECK(block_shape.size() == 2, "Block's shape should be 1D");
+    MACE_CHECK(paddings.size() == 4, "Paddings' shape should be 2D");
+
+    const index_t block_dims = block_shape.size();
+    index_t block_shape_product = 1;
+    for (uint32_t block_dim = 0; block_dim < block_dims; ++block_dim) {
+      MACE_CHECK(block_shape[block_dim] > 1, "block_shape's value should be great to 1");
+      const index_t block_shape_value = block_shape[block_dim];
+      const index_t padded_input_size = input_tensor->dim(block_dim + 1)
+          + paddings[block_dim * 2]
+          + paddings[block_dim * 2 + 1];
+      MACE_CHECK(padded_input_size % block_shape_value == 0,
+                 "padded input ", padded_input_size, " is not divisible by block_shape");
+      block_shape_product *= block_shape_value;
+      output_shape[block_dim + 1] = padded_input_size / block_shape_value;
+    }
+    output_shape[0] = input_tensor->dim(0) * block_shape_product;
+    output_shape[3] = input_tensor->dim(3);
+  }
+
  private:
   kernels::SpaceToBatchFunctor<D, T> functor_;
 
  protected:
-  OP_INPUT_TAGS(INPUT, BLOCK_SHAPE, PADDINGS);
+  OP_INPUT_TAGS(INPUT);
   OP_OUTPUT_TAGS(OUTPUT);
 };
 
diff --git a/mace/ops/space_to_batch_benchmark.cc b/mace/ops/space_to_batch_benchmark.cc
index 5e119a041fd33603d38ad99c0f5084575c25d20d..9afa88b98e2fc22a66f8779e980122c69f3d0f20 100644
--- a/mace/ops/space_to_batch_benchmark.cc
+++ b/mace/ops/space_to_batch_benchmark.cc
@@ -9,23 +9,20 @@
 namespace mace {
 template <DeviceType D, typename T>
 static void BMSpaceToBatch(
-    int iters, int batch, int channels, int height, int width) {
+    int iters, int batch, int height, int width, int channels, int shape) {
   mace::testing::StopTiming();
 
   OpsTestNet net;
+  net.AddRandomInput<D, float>("Input", {batch, height, width, channels});
+
+  BufferToImage<D, float>(net, "Input", "InputImage", kernels::BufferType::IN_OUT);
   OpDefBuilder("SpaceToBatchND", "SpaceToBatchNDTest")
-      .Input("Input")
-      .Input("BlockShape")
-      .Input("Padding")
-      .Output("Output")
+      .Input("InputImage")
+      .Output("OutputImage")
+      .AddIntsArg("paddings", {shape, shape, shape, shape})
+      .AddIntsArg("block_shape", {shape, shape})
       .Finalize(net.NewOperatorDef());
 
-  // Add input data
-  net.AddRandomInput<D, float>("Input", {batch, channels, height, width});
-  net.AddInputFromArray<D, int>(
-      "BlockShape", {2}, {2, 2});
-  net.AddInputFromArray<D, int>("Padding", {2, 2}, {2,3,2,3});
-
   // Warm-up
   for (int i = 0; i < 5; ++i) {
     net.RunOp(D);
@@ -39,18 +36,20 @@ static void BMSpaceToBatch(
   net.Sync();
 }
 
-#define BM_SPACE_TO_BATCH_MACRO(N, C, H, W, TYPE, DEVICE)                  \
-  static void BM_SPACE_TO_BATCH_##N##_##C##_##H##_##W##_##TYPE##_##DEVICE( \
+#define BM_SPACE_TO_BATCH_MACRO(N, H, W, C, SHAPE, TYPE, DEVICE)                  \
+  static void BM_SPACE_TO_BATCH_##N##_##H##_##W##_##C##_##SHAPE##_##TYPE##_##DEVICE( \
       int iters) {                                                     \
     const int64_t tot = static_cast<int64_t>(iters) * N * C * H * W;   \
     mace::testing::ItemsProcessed(tot);                                \
     mace::testing::BytesProcessed(tot *(sizeof(TYPE)));                \
-    BMSpaceToBatch<DEVICE, TYPE>(iters, N, C, H, W);                        \
+    BMSpaceToBatch<DEVICE, TYPE>(iters, N, H, W, C, SHAPE);            \
   }                                                                    \
-  BENCHMARK(BM_SPACE_TO_BATCH_##N##_##C##_##H##_##W##_##TYPE##_##DEVICE)
+  BENCHMARK(BM_SPACE_TO_BATCH_##N##_##H##_##W##_##C##_##SHAPE##_##TYPE##_##DEVICE)
 
-#define BM_SPACE_TO_BATCH(N, C, H, W, TYPE)       \
-  BM_SPACE_TO_BATCH_MACRO(N, C, H, W, TYPE, OPENCL);
+#define BM_SPACE_TO_BATCH(N, H, W, C, SHAPE, TYPE)       \
+  BM_SPACE_TO_BATCH_MACRO(N, H, W, C, SHAPE, TYPE, OPENCL);
 
-BM_SPACE_TO_BATCH(128, 128, 15, 15, float);
+BM_SPACE_TO_BATCH(128, 16, 16, 128, 2, float);
+BM_SPACE_TO_BATCH(1, 256, 256, 32, 2, float);
+BM_SPACE_TO_BATCH(1, 256, 256, 32, 4, float);
 }  //  namespace mace
\ No newline at end of file
diff --git a/mace/ops/space_to_batch_test.cc b/mace/ops/space_to_batch_test.cc
index 78e933df1aaa63e6d338b7d2822d3250e26889db..4c1dbbdcd5a60c9d17a131888755d6fb12a1630f 100644
--- a/mace/ops/space_to_batch_test.cc
+++ b/mace/ops/space_to_batch_test.cc
@@ -4,79 +4,70 @@
 
 #include "gtest/gtest.h"
 #include "mace/ops/ops_test_util.h"
+#include <fstream>
 
 using namespace mace;
 
-template <DeviceType D>
+template<DeviceType D>
 void RunSpaceToBatch(const std::vector<index_t> &input_shape,
                      const std::vector<float> &input_data,
-                     const std::vector<index_t> &block_shape_shape,
                      const std::vector<int> &block_shape_data,
-                     const std::vector<index_t> &padding_shape,
                      const std::vector<int> &padding_data,
                      const Tensor *expected) {
   OpsTestNet net;
-  OpDefBuilder("SpaceToBatchND", "SpaceToBatchNDTest")
-      .Input("Input")
-      .Input("BlockShape")
-      .Input("Padding")
-      .Output("Output")
-      .Finalize(net.NewOperatorDef());
-
-  // Add input data
   net.AddInputFromArray<D, float>(
       "Input", input_shape, input_data);
-  net.AddInputFromArray<D, int>(
-      "BlockShape", block_shape_shape, block_shape_data);
-  net.AddInputFromArray<D, int>("Padding", padding_shape, padding_data);
+
+  BufferToImage<D, float>(net, "Input", "InputImage", kernels::BufferType::IN_OUT);
+  OpDefBuilder("SpaceToBatchND", "SpaceToBatchNDTest")
+      .Input("InputImage")
+      .Output("OutputImage")
+      .AddIntsArg("paddings", padding_data)
+      .AddIntsArg("block_shape", block_shape_data)
+      .Finalize(net.NewOperatorDef());
 
   // Run
   net.RunOp(D);
 
+  ImageToBuffer<D, float>(net, "OutputImage", "Output", kernels::BufferType::IN_OUT);
   // Check
   ExpectTensorNear<float>(*expected, *net.GetOutput("Output"), 1e-8);
-
 }
 
-template <DeviceType D>
+template<DeviceType D>
 void RunBatchToSpace(const std::vector<index_t> &input_shape,
                      const std::vector<float> &input_data,
-                     const std::vector<index_t> &block_shape_shape,
                      const std::vector<int> &block_shape_data,
-                     const std::vector<index_t> &crops_shape,
                      const std::vector<int> &crops_data,
                      const Tensor *expected) {
   OpsTestNet net;
-  OpDefBuilder("BatchToSpaceND", "BatchToSpaceNDTest")
-      .Input("Input")
-      .Input("BlockShape")
-      .Input("Crops")
-      .Output("Output")
-      .Finalize(net.NewOperatorDef());
-
   // Add input data
   net.AddInputFromArray<D, float>(
       "Input", input_shape, input_data);
-  net.AddInputFromArray<D, int>(
-      "BlockShape", block_shape_shape, block_shape_data);
-  net.AddInputFromArray<D, int>("Crops", crops_shape, crops_data);
+
+  BufferToImage<D, float>(net, "Input", "InputImage", kernels::BufferType::IN_OUT);
+  OpDefBuilder("BatchToSpaceND", "BatchToSpaceNDTest")
+      .Input("InputImage")
+      .Output("OutputImage")
+      .AddIntsArg("crops", crops_data)
+      .AddIntsArg("block_shape", block_shape_data)
+      .Finalize(net.NewOperatorDef());
 
   // Run
   net.RunOp(D);
 
+  ImageToBuffer<D, float>(net, "OutputImage", "Output", kernels::BufferType::IN_OUT);
   // Check
   ExpectTensorNear<float>(*expected, *net.GetOutput("Output"), 1e-8);
 }
 
-template <typename T>
-void TestBidirectionTransform(const std::vector<index_t> &space_shape,
-                              const std::vector<float> &space_data,
-                              const std::vector<index_t> &block_shape,
-                              const std::vector<int> &block_data,
-                              const std::vector<index_t> &padding_shape,
-                              const std::vector<int> &padding_data,
-                              const std::vector<index_t> &batch_shape,
-                              const std::vector<float> &batch_data) {
+template<typename T>
+void TestBidirectionalTransform(const std::vector<index_t> &space_shape,
+                                const std::vector<float> &space_data,
+                                const std::vector<int> &block_data,
+                                const std::vector<int> &padding_data,
+                                const std::vector<index_t> &batch_shape,
+                                const std::vector<float> &batch_data) {
 
   auto space_tensor = unique_ptr<Tensor>(new Tensor(GetDeviceAllocator(DeviceType::OPENCL),
                                                     DataTypeToEnum<T>::v()));
@@ -101,99 +92,157 @@ void TestBidirectionTransform(const std::vector<index_t> &space_shape,
   }
 
   RunSpaceToBatch<DeviceType::OPENCL>(space_shape, space_data,
-                                      block_shape, block_data,
-                                      padding_shape, padding_data,
+                                      block_data,
+                                      padding_data,
                                       batch_tensor.get());
 
   RunBatchToSpace<DeviceType::OPENCL>(batch_shape, batch_data,
-                                      block_shape, block_data,
-                                      padding_shape, padding_data,
+                                      block_data,
+                                      padding_data,
                                       space_tensor.get());
 }
 
 TEST(SpaceToBatchTest, SmallData) {
-  TestBidirectionTransform<float>({1, 1, 2, 2},
-                                  {1,2,3,4},
-                                  {2},
-                                  {2, 2},
-                                  {2, 2},
-                                  {0, 0, 0, 0},
-                                  {4,1,1,1},
-                                  {1,2,3,4}
+  TestBidirectionalTransform<float>({1, 2, 2, 1},
+                                    {1, 2, 3, 4},
+                                    {2, 2},
+                                    {0, 0, 0, 0},
+                                    {4, 1, 1, 1},
+                                    {1, 2, 3, 4}
   );
 }
 
 TEST(SpaceToBatchTest, SmallDataWithOnePadding) {
-  TestBidirectionTransform<float>({1, 1, 2, 2},
-                                  {1,2,3,4},
-                                  {2},
-                                  {3, 3},
-                                  {2, 2},
-                                  {1, 0, 1, 0},
-                                  {9,1,1,1},
-                                  {0,0,0,0,1,2,0,3,4}
+  TestBidirectionalTransform<float>({1, 2, 2, 1},
+                                    {1, 2, 3, 4},
+                                    {3, 3},
+                                    {1, 0, 1, 0},
+                                    {9, 1, 1, 1},
+                                    {0, 0, 0, 0, 1, 2, 0, 3, 4}
   );
 }
 
 TEST(SpaceToBatchTest, SmallDataWithTwoPadding) {
-  TestBidirectionTransform<float>({1, 1, 2, 2},
-                                  {1,2,3,4},
-                                  {2},
-                                  {2, 2},
-                                  {2, 2},
-                                  {1, 1, 1, 1},
-                                  {4,1,2,2},
-                                  {0,0,0,4,0,0,3,0,0,2,0,0,1,0,0,0}
+  TestBidirectionalTransform<float>({1, 2, 2, 1},
+                                    {1, 2, 3, 4},
+                                    {2, 2},
+                                    {1, 1, 1, 1},
+                                    {4, 2, 2, 1},
+                                    {0, 0, 0, 4, 0, 0, 3, 0, 0, 2, 0, 0, 1, 0, 0, 0}
+  );
+}
+
+TEST(SpaceToBatchTest, SmallDataWithLargeImage) {
+  TestBidirectionalTransform<float>({1, 2, 10, 1},
+                                    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
+                                     11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
+                                    {2, 2},
+                                    {0, 0, 0, 0},
+                                    {4, 1, 5, 1},
+                                    {1, 3, 5, 7, 9,
+                                     2, 4, 6, 8, 10,
+                                     11, 13, 15, 17, 19,
+                                     12, 14, 16, 18, 20}
   );
 }
 
 TEST(SpaceToBatchTest, MultiChannelData) {
-  TestBidirectionTransform<float>({1, 3, 2, 2},
-                                  {1,2,3,4,5,6,7,8,9,10,11,12},
-                                  {2},
-                                  {2, 2},
-                                  {2, 2},
-                                  {0, 0, 0, 0},
-                                  {4,3,1,1},
-                                  {1,5,9,2,6,10,3,7,11,4,8,12}
-                                  );
+  TestBidirectionalTransform<float>({1, 2, 2, 3},
+                                    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
+                                    {2, 2},
+                                    {0, 0, 0, 0},
+                                    {4, 1, 1, 3},
+                                    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
+  );
 }
 
 TEST(SpaceToBatchTest, LargerMultiChannelData) {
-  TestBidirectionTransform<float>({1, 1, 4, 4},
-                                  {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16},
-                                  {2},
-                                  {2, 2},
-                                  {2, 2},
-                                  {0, 0, 0, 0},
-                                  {4,1,2,2},
-                                  {1,3,9,11,2,4,10,12,5,7,13,15,6,8,14,16}
+  TestBidirectionalTransform<float>({1, 4, 4, 1},
+                                    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16},
+                                    {2, 2},
+                                    {0, 0, 0, 0},
+                                    {4, 2, 2, 1},
+                                    {1, 3, 9, 11, 2, 4, 10, 12, 5, 7, 13, 15, 6, 8, 14, 16}
   );
 }
 
 TEST(SpaceToBatchTest, MultiBatchData) {
-  TestBidirectionTransform<float>({2, 1, 2, 4},
-                                  {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16},
-                                  {2},
-                                  {2, 2},
-                                  {2, 2},
-                                  {0, 0, 0, 0},
-                                  {8,1,1,2},
-                                  {1,3,2,4,5,7,6,8,9,11,10,12,13,15,14,16}
+  TestBidirectionalTransform<float>({2, 2, 4, 1},
+                                    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16},
+                                    {2, 2},
+                                    {0, 0, 0, 0},
+                                    {8, 1, 2, 1},
+                                    {1, 3, 2, 4, 5, 7, 6, 8, 9, 11, 10, 12, 13, 15, 14, 16}
   );
 }
 
 TEST(SpaceToBatchTest, MultiBatchAndChannelData) {
-  TestBidirectionTransform<float>({2, 2, 2, 4},
-                                  {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,
-                                   17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32},
-                                  {2},
-                                  {2, 2},
-                                  {2, 2},
-                                  {0, 0, 0, 0},
-                                  {8,2,1,2},
-                                  {1,3,9,11,2,4,10,12,5,7,13,15,6,8,14,16,
-                                  17,19,25,27,18,20,26,28,21,23,29,31,22,24,30,32}
+  TestBidirectionalTransform<float>({2, 2, 4, 2},
+                                    {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
+                                     17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32},
+                                    {2, 2},
+                                    {0, 0, 0, 0},
+                                    {8, 1, 2, 2},
+                                    {1, 2, 5, 6, 3, 4, 7, 8, 9, 10, 13, 14, 11, 12, 15, 16,
+                                    17, 18, 21, 22, 19, 20, 23, 24, 25, 26, 29, 30, 27, 28, 31, 32}
   );
 }
 
+//TEST(SpaceTobatchTest, CompareTF) {
+//
+//  const std::string space_file = "/data/local/tmp/test/input";
+//  const std::string batch_file = "/data/local/tmp/test/output";
+//  const std::vector<index_t> space_shape = {1, 256, 256, 32};
+//  const int space_size = std::accumulate(space_shape.begin(), space_shape.end(), 1, std::multiplies<int>());
+//  const std::vector<index_t> batch_shape = {4, 130, 130, 32};
+//  const int batch_size = std::accumulate(batch_shape.begin(), batch_shape.end(), 1, std::multiplies<int>());
+//
+//  auto space_tensor = unique_ptr<Tensor>(new Tensor(GetDeviceAllocator(DeviceType::OPENCL),
+//                                                    DataTypeToEnum<float>::v()));
+//  space_tensor->Resize(space_shape);
+//  std::vector<float> space_data(space_size, 0.0);
+//  std::ifstream in_file(space_file, std::ios::in | std::ios::binary);
+//  if (in_file.is_open()) {
+//    in_file.read(reinterpret_cast<char *>(space_data.data()),
+//                 space_size * sizeof(float));
+//    in_file.close();
+//    Tensor::MappingGuard space_mapper(space_tensor.get());
+//    float *space_ptr = space_tensor->mutable_data<float>();
+//    MACE_CHECK(static_cast<size_t>(space_tensor->size()) == space_data.size())
+//      << "Space tensor size:" << space_tensor->size()
+//      << ", space data size:" << space_data.size();
+//    memcpy(space_ptr, space_data.data(), space_data.size() * sizeof(float));
+//  } else {
+//    VLOG(0) << "open space file failed";
+//  }
+//
+//  auto batch_tensor = unique_ptr<Tensor>(new Tensor(GetDeviceAllocator(DeviceType::OPENCL),
+//                                                    DataTypeToEnum<float>::v()));
+//  std::vector<float> batch_data(batch_size, 0.0);
+//  batch_tensor->Resize(batch_shape);
+//  {
+//    std::ifstream in_file(batch_file, std::ios::in | std::ios::binary);
+//    if (in_file.is_open()) {
+//      in_file.read(reinterpret_cast<char *>(batch_data.data()),
+//                    batch_size * sizeof(float));
+//      in_file.close();
+//    } else {
+//      VLOG(0) << "open batch file failed";
+//    }
+//    Tensor::MappingGuard batch_mapper(batch_tensor.get());
+//    float *batch_ptr = batch_tensor->mutable_data<float>();
+//    MACE_CHECK(static_cast<size_t>(batch_tensor->size()) == batch_data.size());
+//    memcpy(batch_ptr, batch_data.data(), batch_data.size() * sizeof(float));
+//  }
+//
+//  RunSpaceToBatch<DeviceType::OPENCL>(space_shape, space_data,
+//                                      {2, 2},
+//                                      {2, 2, 2, 2},
+//                                      batch_tensor.get());
+//
+//  RunBatchToSpace<DeviceType::OPENCL>(batch_shape, batch_data,
+//                                      {2, 2},
+//                                      {2, 2, 2, 2},
+//                                      space_tensor.get());
+//}
+
diff --git a/mace/python/tools/tf_converter_lib.py b/mace/python/tools/tf_converter_lib.py
index 99094b886d9a89dacf881c7fbcfc2eb8c6563e8a..0378c018b3bc33564bcc3cfd80669e1082309be0 100644
--- a/mace/python/tools/tf_converter_lib.py
+++ b/mace/python/tools/tf_converter_lib.py
@@ -363,6 +363,27 @@ class TFConverter(object):
     self.net_def.op.extend([op_def])
     self.resolved_ops[op.name] = 1
 
+  def convert_space_to_batch(self, op, b2s):
+    op_def = self.net_def.op.add()
+    arg = op_def.arg.add()
+    arg.name = 'T'
+    arg.i = self.dt
+    op_def.name = op.name
+    op_def.type = op.type
+    op_def.input.extend([op.inputs[0].name])
+    op_def.output.extend([output.name for output in op.outputs])
+    size_arg = op_def.arg.add()
+    size_arg.name = 'block_shape'
+    size_arg.ints.extend(get_input_tensor(op, 1).eval().astype(np.int32).flat)
+    size_arg = op_def.arg.add()
+    if b2s:
+      size_arg.name = 'crops'
+    else:
+      size_arg.name = 'paddings'
+    size_arg.ints.extend(get_input_tensor(op, 2).eval().astype(np.int32).flat)
+    self.add_output_shape(op.outputs, op_def)
+    self.resolved_ops[op.name] = 1
+
   def convert_normal_op(self, op):
     op_def = self.net_def.op.add()
     arg = op_def.arg.add()
@@ -405,7 +426,11 @@ class TFConverter(object):
         self.convert_resize_bilinear(op)
       elif op.type == 'BiasAdd':
         self.convert_bias_add(op)
-      elif op.type in ['Relu', 'SpaceToBatchND', 'BatchToSpaceND']:
+      elif op.type == 'SpaceToBatchND':
+        self.convert_space_to_batch(op, False)
+      elif op.type == 'BatchToSpaceND':
+        self.convert_space_to_batch(op, True)
+      elif op.type in ['Relu']:
         self.convert_normal_op(op)
       else:
         raise Exception('Unknown Op: %s, type: %s' % (op.name, op.type))
diff --git a/tools/gcn.config b/tools/gcn.config
new file mode 100644
index 0000000000000000000000000000000000000000..304d7a2931ee288619cb08d99193828d2cd2cc9a
--- /dev/null
+++ b/tools/gcn.config
@@ -0,0 +1,2 @@
+TF_INPUT_NODE=input
+TF_OUTPUT_NODE=GCN/br_result_2/fcn_br
\ No newline at end of file
diff --git a/tools/side_gcn.config b/tools/side_gcn.config
new file mode 100644
index 0000000000000000000000000000000000000000..d22d730bac70cce3f5c665b5c83c56334f1de319
--- /dev/null
+++ b/tools/side_gcn.config
@@ -0,0 +1,2 @@
+TF_INPUT_NODE=input_node
+TF_OUTPUT_NODE=GCN/br_result_x/fcn_br
\ No newline at end of file
diff --git a/tools/validate_gcn.sh b/tools/validate_gcn.sh
index a0f8e580ba174664e53dada6f9f0b83a3466c6d6..1359a356bc84b89b6c711d2ab1e2108e4ddb99d3 100644
--- a/tools/validate_gcn.sh
+++ b/tools/validate_gcn.sh
@@ -2,7 +2,7 @@
 # Must run at root dir of mace project.
 set +x
 Usage() {
-  echo 'Usage: bash tools/validate_gcn.sh tf_model_path image_size [tuning]'
+  echo 'Usage: bash tools/validate_gcn.sh tools/gcn.config tf_model_path image_size [tuning]'
 }
 
 if [ $# -lt 2 ];then
@@ -10,8 +10,10 @@ if [ $# -lt 2 ];then
   exit -1
 fi
 
+source $1
+
 VLOG_LEVEL=0
-TF_MODEL_FILE_PATH=$1
+TF_MODEL_FILE_PATH=$2
 MODEL_DIR=$(dirname ${TF_MODEL_FILE_PATH})
 MACE_SOURCE_DIR=`/bin/pwd`
 MACE_MODEL_NAME='mace_model.pb'
@@ -20,14 +22,14 @@ OUTPUT_FILE_NAME='gcn.out'
 OUTPUT_LIST_FILE='gcn.list'
 PHONE_DATA_DIR="/data/local/tmp/${MACE_MODEL_NAME}"
 KERNEL_DIR="${PHONE_DATA_DIR}/cl/"
-IMAGE_SIZE=$2
+IMAGE_SIZE=$3
 MODEL_TAG=GCN${IMAGE_SIZE}
 CODEGEN_DIR=${MACE_SOURCE_DIR}/mace/codegen
 MODEL_CODEGEN_DIR=${CODEGEN_DIR}/models/gcn-$IMAGE_SIZE
 CL_CODEGEN_DIR=${CODEGEN_DIR}/opencl
 CL_BIN_DIR=${CODEGEN_DIR}/opencl_bin
 TUNING_CODEGEN_DIR=${CODEGEN_DIR}/tuning
-TUNING_OR_NOT=${3:-0}
+TUNING_OR_NOT=${4:-0}
 VERSION_SOURCE_PATH=${CODEGEN_DIR}/version
 
 build_and_run()
@@ -87,8 +89,8 @@ rm -rf ${MODEL_CODEGEN_DIR}
 mkdir -p ${MODEL_CODEGEN_DIR}
 bazel-bin/mace/python/tools/tf_converter --input=${TF_MODEL_FILE_PATH} \
                                          --output=${MODEL_CODEGEN_DIR}/mace_gcn${IMAGE_SIZE}.cc \
-                                         --input_node=input \
-                                         --output_node=GCN/br_result_2/fcn_br \
+                                         --input_node=${TF_INPUT_NODE} \
+                                         --output_node=${TF_OUTPUT_NODE} \
                                          --data_type=DT_HALF \
                                          --runtime=gpu \
                                          --output_type=source \
@@ -129,7 +131,7 @@ echo "Step 9: Validate the result"
 python tools/validate.py --model_file ${TF_MODEL_FILE_PATH} \
     --input_file ${MODEL_DIR}/${INPUT_FILE_NAME} \
     --mace_out_file ${MODEL_DIR}/${OUTPUT_FILE_NAME} \
-    --input_node input \
-    --output_node GCN/br_result_2/fcn_br\
+    --input_node ${TF_INPUT_NODE} \
+    --output_node ${TF_OUTPUT_NODE} \
     --input_shape "${IMAGE_SIZE},${IMAGE_SIZE},3" \
     --output_shape "1,${IMAGE_SIZE},${IMAGE_SIZE},2"