我有一个简单的程序,它使用openMP运行4个线程,可以读取4个不同的文本文件并查找字符。我只是想弄清楚为什么报告的最后一个线程显示线程数为26478 ......我无法弄清楚。函数countAnagrams对tid没有任何作用,只是在函数完成运行时将它打印到屏幕上。OpenMP没有显示正确的线程号 - C
下面是我的代码和输出。任何帮助将不胜感激。
#include <omp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void countAnagrams(char* fileName, int threadNum);
void main()
{
char *fileNames[] = {"AnagramA.txt","AnagramB.txt","AnagramC.txt","AnagramD.txt"};
int i;
int tid;
int nthreads = 4;
omp_set_num_threads(nthreads);
#pragma omp parallel
{
#pragma omp sections
{
#pragma omp section
{tid = omp_get_thread_num();
countAnagrams(fileNames[0], tid);}
#pragma omp section
{tid = omp_get_thread_num();
countAnagrams(fileNames[1], tid);}
#pragma omp section
{tid = omp_get_thread_num();
countAnagrams(fileNames[2], tid);}
#pragma omp section
{tid = omp_get_thread_num();
countAnagrams(fileNames[3], tid);}
}
}
}
输出:
Filename: AnagramD.txt
Hello from thread: 1
Number of anagrams: 286
Longest anagram: 8
Filename: AnagramB.txt
Hello from thread: 0
Number of anagrams: 1148
Longest anagram: 8
Filename: AnagramC.txt
Hello from thread: 2
Number of anagrams: 5002
Longest anagram: 8
Filename: AnagramA.txt
Hello from thread: 26478
Number of anagrams: 3184
Longest anagram: 8
请勿张贴文字的照片。改为发布实际文字。 –
线程号码是一种id,而不是实际的号码。从输出看来,好像有四个线程在运行。 – deamentiaemundi
我会记得下一次约翰,谢谢 – drewfiss90