Move set din zero to the device operator

example/49_maxpool2d_bwd/maxpool2d_bwd_common.hpp

@@ -116,7 +116,6 @@ bool maxpool_bwd_test(bool do_verification,
 
     in_device_buf.ToDevice(in_n_c_hi_wi.mData.data());
     dout_device_buf.ToDevice(dout_n_c_ho_wo.mData.data());
-    din_device_buf.SetZero();
 
     auto pool_fwd              = DevicePoolFwdInstance{};
     auto pool_fwd_invoker_ptr  = pool_fwd.MakeInvokerPointer();

include/ck/tensor_operation/gpu/device/impl/device_index_pool_bwd_impl.hpp

@@ -123,8 +123,13 @@ struct DeviceIndexPoolBwdImpl : public DeviceIndexPoolBwd<DOutDataType, IndexDat
     {
         float Run(const Argument& arg, const StreamConfig& stream_config = StreamConfig{})
         {
+            index_t din_length_raw = arg.din_grid_desc_.GetTransforms()[I0].GetUpperLengths()[I0];
+
             if constexpr(is_same_v<DInDataType, float> || is_same_v<DInDataType, double>)
             {
+                hip_check_error(hipMemsetAsync(
+                    arg.p_din_, 0, din_length_raw * sizeof(DInDataType), stream_config.stream_id_));
+
                 if(arg.windowOverlap_)
                 {
                     const auto put_kernel = kernel_put_element_1d<GridwisePutElementAtomicAdd,
@@ -173,13 +178,11 @@ struct DeviceIndexPoolBwdImpl : public DeviceIndexPoolBwd<DOutDataType, IndexDat
                     if(arg.p_workspace_ == nullptr)
                         throw std::runtime_error("wrong! WorkSpace pointer has not been set");
 
-                    index_t din_length_raw =
-                        arg.din_grid_desc_.GetTransforms()[I0].GetUpperLengths()[I0];
-
                     hip_check_error(
-                        hipMemset(arg.p_workspace_,
+                        hipMemsetAsync(arg.p_workspace_,
                                        0,
-                                  din_length_raw * sizeof(DInDataType_AutomicAddPreCast)));
+                                       din_length_raw * sizeof(DInDataType_AutomicAddPreCast),
+                                       stream_config.stream_id_));
 
                     const auto put_kernel = kernel_put_element_1d<GridwisePutElementAtomicAdd,
                                                                   InOutGrid1dDesc,
@@ -231,6 +234,11 @@ struct DeviceIndexPoolBwdImpl : public DeviceIndexPoolBwd<DOutDataType, IndexDat
                                                                   DInDataType,
                                                                   PassThrough>;
 
+                    hip_check_error(hipMemsetAsync(arg.p_din_,
+                                                   0,
+                                                   din_length_raw * sizeof(DInDataType),
+                                                   stream_config.stream_id_));
+
                     return launch_and_time_kernel(stream_config,
                                                   put_kernel,
                                                   dim3(arg.gridSize_),