fix conv2d precision problem and conv2d runtime error.

mindspore/ccsrc/runtime/device/ascend/ascend_device_address.cc

@@ -415,9 +415,9 @@ bool AscendDeviceAddress::SyncDeviceToHostAndConvertFormatBasedOnTransData(const
       MS_LOG(ERROR) << "Illegal dtype.";
     }
     auto shape_size = trans::ShapeSize(host_shape);
-    auto size_tmp = device_dtype_size * shape_size;
-    size = GetCommonAlignSize(size_tmp);
+    size = device_dtype_size * shape_size;
   }
+  size = GetCommonAlignSize(size);
   void *output_address_ptr = nullptr;
   auto ret_malloc = rtMalloc(&output_address_ptr, size, RT_MEMORY_HBM);
   if (ret_malloc != RT_ERROR_NONE) {
@@ -427,7 +427,7 @@ bool AscendDeviceAddress::SyncDeviceToHostAndConvertFormatBasedOnTransData(const
   // launch
   LaunchTransData(kernel_mod_ptr, output_address_ptr, size, workspace_size_list);
   if (type_id_ == type) {
-    SyncMemory(host_ptr, output_address_ptr, size, RT_MEMCPY_DEVICE_TO_HOST);
+    SyncMemory(host_ptr, output_address_ptr, host_size, RT_MEMCPY_DEVICE_TO_HOST);
   } else {
     auto host = std::vector<uint8_t>(size);
     SyncMemory(host.data(), output_address_ptr, size, RT_MEMCPY_DEVICE_TO_HOST);