C++❤️)OpenMP - examples(g++ -fopenmp hello.cpp -o hello

https://goulassoup.wordpress.com/2011/10/28/openmp-tutorial/

OpenMP tutorial

https://docs.microsoft.com/ko-kr/cpp/parallel/openmp/a-examples?view=msvc-170

A. 예제

https://www.geeksforgeeks.org/openmp-hello-world-program/amp/

OpenMP | Hello World program - GeeksforGeeks

// C언어
gcc -o hello -fopenmp hello.c
gcc -fopenmp   -c -o hello.o hello.c
gcc -fopenmp  hello.o   -o hello



// C++
g++ -fopenmp hello.cpp  -o hello

$ export OMP_NUM_THREADS=8
$ ./hello
Hello from OpenMP thread 7
Hello from OpenMP thread 3
Hello from OpenMP thread 4
Hello from OpenMP thread 5
Hello from OpenMP thread 1
Hello from OpenMP thread 6
Hello from OpenMP thread 2
Hello from OpenMP thread 0

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https://goulassoup.wordpress.com/2011/10/28/setting-up-opencl-using-an-nvidia-device-on-ubuntu/

Setting up OpenCL using an Nvidia device on Ubuntu

#include <stdio.h>
#include <stdlib.h>
 
int main(int argc, char *argv[])
{
    int err;
    cl_uint platforms;
    cl_platform_id platform = NULL;
    char cBuffer[1024];
 
    err = clGetPlatformIDs( 1, &platform, &platforms );
    if (err != CL_SUCCESS)
    {
        printf("Error in OpenCL call!\n");
        return EXIT_FAILURE;
    }
    printf("Number of platforms: %d\n", platforms);
 
    err = clGetPlatformInfo( platform, CL_PLATFORM_NAME, sizeof(cBuffer), cBuffer, NULL );
    if (err != CL_SUCCESS)
    {
        printf("Error in OpenCL call!\n");
        return EXIT_FAILURE;
    }
    printf("CL_PLATFORM_NAME :\t %s\n", cBuffer);
 
    err = clGetPlatformInfo( platform, CL_PLATFORM_VERSION,     sizeof(cBuffer), cBuffer, NULL );
    if (err != CL_SUCCESS)
    {
        printf("Error in OpenCL call!\n");
        return EXIT_FAILURE;
    }
    printf("CL_PLATFORM_VERSION :\t %s\n", cBuffer);
}

https://bisqwit.iki.fi/story/howto/openmp/

Guide into OpenMP: Easy multithreading programming for C++

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https://github.com/ysh329/OpenMP-101

GitHub - ysh329/OpenMP-101: Learn OpenMP examples step by step

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