我有以下代码:
/* C Example */
#include <stdio.h>
#include <mpi.h>
int main (int argc,char* argv[])
{
int rank, size;
MPI_Init (&argc, &argv); /* starts MPI */
MPI_Comm_rank (MPI_COMM_WORLD, &rank); /* get current process id */
MPI_Comm_size (MPI_COMM_WORLD, &size); /* get number of processes */
printf( "Hello world from process %d of %d\n", rank, size );
MPI_Finalize();
return 0;
}
我用它编译
mpicc hello.c
但是当我启动它时
mpirun -np 2 ./a.out
什么也没发生,我必须用 Ctrlt+C 取消它。我究竟做错了什么?
提前致谢 :)