C언어] ❤️OpenMP를 사용해서 내 컴퓨터의 가능한 Threads숫자 알아보기

https://www.geeksforgeeks.org/openmp-introduction-with-installation-guide/amp/

OpenMP | Introduction with Installation Guide - GeeksforGeeks

getthread_parallel.c

#include <omp.h>
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[]) {
  int nthreads, tid;

#pragma omp parallel private(nthreads, tid)
  {
    tid = omp_get_thread_num();
    printf("Welcome to GFG from thread = %d \n", tid);

    if (tid == 0) {
      nthreads = omp_get_num_threads();
      printf("Number of threads = %d \n", nthreads);
    }
  }
}

gcc -o gfg -fopenmp getthread_parallel.c



ls

README.md             getthread_parallel.c  omp.cpp               omp_helloworld.c
fibo.c                gfg                   omp_fibo_parallel.cpp threads.cpp



./gfg
Welcome to GFG from thread = 2
Welcome to GFG from thread = 4
Welcome to GFG from thread = 1
Welcome to GFG from thread = 0
Number of threads = 8
Welcome to GFG from thread = 6
Welcome to GFG from thread = 5
Welcome to GFG from thread = 3
Welcome to GFG from thread = 7

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다른 글 보기
Rust연습❤️
내 컴퓨터에 병렬 실행 가능한 코어수 알아보기
available_parallelism -
https://economiceco.tistory.com/m/14302

Rust연습❤️내 컴퓨터에 병렬 실행 가능한 코어수 알아보기available_parallelism

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