pThreads

https://computing.llnl.gov/tutorials/pthreads/

ulimit

 gcc -pthread hello.c -o hello

fabio@fabio-virtual-machine:~/Documents/HPC/pthreads/hello$ ./hello
In main: creating thread 0
In main: creating thread 1
In main: creating thread 2
In main: creating thread 3
In main: creating thread 4
Hello World! It's me, thread #4!
Hello World! It's me, thread #3!
Hello World! It's me, thread #2!
Hello World! It's me, thread #1!
Hello World! It's me, thread #0!
fabio@fabio-virtual-machine:~/Documents/HPC/pthreads/hello$ cat hello.
cat: hello.: No such file or directory
fabio@fabio-virtual-machine:~/Documents/HPC/pthreads/hello$ cat hello.c
/******************************************************************************
* FILE: hello.c
* DESCRIPTION:
*   A "hello world" Pthreads program.  Demonstrates thread creation and
*   termination.
* AUTHOR: Blaise Barney
* LAST REVISED: 08/09/11
******************************************************************************/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#define NUM_THREADS    5

void *PrintHello(void *threadid)
{
   long tid;
   tid = (long)threadid;
   printf("Hello World! It's me, thread #%ld!\n", tid);
   pthread_exit(NULL);
}

int main(int argc, char *argv[])
{
   pthread_t threads[NUM_THREADS];
   int rc;
   long t;
   for(t=0;t<NUM_THREADS;t++){
     printf("In main: creating thread %ld\n", t);
     rc = pthread_create(&threads[t], NULL, PrintHello, (void *)t);
     if (rc){
       printf("ERROR; return code from pthread_create() is %d\n", rc);
       exit(-1);
       }
     }

   /* Last thing that main() should do */
   pthread_exit(NULL);
}
debugger: http://www.roguewave.com/products-services/totalview não GPL. Taxa a combinar.