95 lines
3.7 KiB
C++
95 lines
3.7 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2017 - 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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#pragma once
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#define TI(tag) \
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cudaEvent_t _event_start_ ##tag; \
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cudaEvent_t _event_end_ ##tag; \
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float _event_time_ ##tag; \
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cudaEventCreate(& _event_start_ ##tag); \
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cudaEventCreate(& _event_end_ ##tag); \
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cudaEventRecord(_event_start_ ##tag);
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#define TO(tag, str, times) \
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cudaEventRecord(_event_end_ ##tag); \
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cudaEventSynchronize(_event_end_ ##tag); \
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cudaEventElapsedTime(&_event_time_ ##tag, _event_start_ ##tag, _event_end_ ##tag); \
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float _event_time_once_ ##tag = _event_time_ ##tag / times; \
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printf("%20s:\t %10.3fus\t", str, _event_time_once_ ##tag * 1000); \
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cudaDeviceSynchronize(); \
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printf("%20s string: %s\n",str, cudaGetErrorString(cudaGetLastError()));
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template<typename T>
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struct memory_unit{
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T* host_ptr;
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T* device_ptr;
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int size_bytes;
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int elements;
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void h2d(){
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cudaMemcpy(device_ptr, host_ptr, size_bytes, cudaMemcpyHostToDevice);
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}
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void d2h(){
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cudaMemcpy(host_ptr, device_ptr, size_bytes, cudaMemcpyDeviceToHost);
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}
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void free_all(){
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free(host_ptr);
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cudaFree(device_ptr);
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}
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memory_unit(int elements_): size_bytes(elements_ * sizeof(T)), elements(elements_){
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host_ptr = (T*) malloc(elements_ * sizeof(T));
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cudaMalloc((void**)&device_ptr, elements_ * sizeof(T));
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}
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void init(int abs_range = 1){
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for(int i = 0; i < elements; i++){
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host_ptr[i] = T(rand() % 100 / float(100) * 2 * abs_range - abs_range);
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}
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h2d();
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}
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};
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template<typename T>
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int check_result(T * a, T * b, int N){
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int cnt = 0;
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for(int i = 0; i < N; i ++){
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float std = float(a[i]);
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float my = float(b[i]);
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if(abs(std - my) / abs(std) > 1e-2)
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{
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// printf("my: %f , std: %f\n", my, std);
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cnt++;
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}
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}
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printf("total err: %d / %d\n", cnt, N);
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return cnt;
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}
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