【环境搭建】Ubuntu18.04 nvidia显卡 OpenCL环境搭建

1，搭建cuda环境
https://blog.csdn.net/luolinll1212/article/details/80752264

2，搭建opencl环境
进入cuda安装目录，/usr/local/cuda-10.2，配置opencl

sudo cp -a /usr/local/cuda-10.2/include/CL /usr/local/include # 配置opencl的include目录
sudu cp -a /usr/local/cuda-10.2/lib64/* /usr/lib #配置opencl的
sudo echo '/usr/local/cuda-10.2/lib64/' >> /etc/ld.so.conf　＃将cuda lib添加到/etc/ls.so.conf

3，测试
gcc test.c -o test -lOpenCL

#include <stdio.h>
#include <stdlib.h>
#include <alloca.h>#ifdef APPLE
#include <OpenCL/cl.h>
#else
#include <CL/cl.h>
#endifvoid displayPlatformInfo(cl_platform_id id,cl_platform_info param_name,const char* paramNameAsStr) {cl_int error = 0;size_t paramSize = 0;error = clGetPlatformInfo( id, param_name, 0, NULL, &paramSize );char* moreInfo = (char*)alloca( sizeof(char) * paramSize);error = clGetPlatformInfo( id, param_name, paramSize, moreInfo, NULL );if (error != CL_SUCCESS ) {perror("Unable to find any OpenCL platform information");return;}printf("%s: %s\n", paramNameAsStr, moreInfo);
}int main() {/* OpenCL 1.1 data structures */cl_platform_id* platforms;/* OpenCL 1.1 scalar data types */cl_uint numOfPlatforms;cl_int  error;/* Get the number of platforms Remember that for each vendor's SDK installed on the computer,the number of available platform also increased. */error = clGetPlatformIDs(0, NULL, &numOfPlatforms);if(error != CL_SUCCESS) {           perror("Unable to find any OpenCL platforms");exit(1);}// Allocate memory for the number of installed platforms.// alloca(...) occupies some stack space but is automatically freed on returnplatforms = (cl_platform_id*) alloca(sizeof(cl_platform_id) * numOfPlatforms);printf("Number of OpenCL platforms found: %d\n", numOfPlatforms);error = clGetPlatformIDs(numOfPlatforms, platforms, NULL);if(error != CL_SUCCESS) {          perror("Unable to find any OpenCL platforms");exit(1);}// We invoke the API 'clPlatformInfo' twice for each parameter we're trying to extract// and we use the return value to create temporary data structures (on the stack) to store// the returned information on the second invocation.for(cl_uint i = 0; i < numOfPlatforms; ++i) {displayPlatformInfo( platforms[i], CL_PLATFORM_PROFILE, "CL_PLATFORM_PROFILE" );displayPlatformInfo( platforms[i], CL_PLATFORM_VERSION, "CL_PLATFORM_VERSION" );displayPlatformInfo( platforms[i], CL_PLATFORM_NAME,    "CL_PLATFORM_NAME" );displayPlatformInfo( platforms[i], CL_PLATFORM_VENDOR,  "CL_PLATFORM_VENDOR" );displayPlatformInfo( platforms[i], CL_PLATFORM_EXTENSIONS, "CL_PLATFORM_EXTENSIONS" );}return 0;
}

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