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Composable Kernel: /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-composable-kernel/checkouts/docs-6.4.3/include/ck/library/utility/device_memory.hpp Source File

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 // SPDX-License-Identifier: MIT
 // Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.
  
 #pragma once
  
 #include <hip/hip_runtime.h>
  
 template <typename T>
 __global__ void set_buffer_value(T* p, T x, uint64_t buffer_element_size)
 {
     for(uint64_t i = threadIdx.x; i < buffer_element_size; i += blockDim.x)
     {
         p[i] = x;
     }
 }
  
 struct DeviceMem
 {
     DeviceMem() : mpDeviceBuf(nullptr), mMemSize(0) {}
     DeviceMem(std::size_t mem_size);
     void Realloc(std::size_t mem_size);
     void* GetDeviceBuffer() const;
     std::size_t GetBufferSize() const;
     void ToDevice(const void* p) const;
     void ToDevice(const void* p, const std::size_t cpySize) const;
     void FromDevice(void* p) const;
     void FromDevice(void* p, const std::size_t cpySize) const;
     void SetZero() const;
     template <typename T>
     void SetValue(T x) const;
     ~DeviceMem();
  
     void* mpDeviceBuf;
     std::size_t mMemSize;
 };
  
 template <typename T>
 void DeviceMem::SetValue(T x) const
 {
     if(mMemSize % sizeof(T) != 0)
     {
         throw std::runtime_error("wrong! not entire DeviceMem will be set");
     }
  
     set_buffer_value<T><<<1, 1024>>>(static_cast<T*>(mpDeviceBuf), x, mMemSize / sizeof(T));
 }