在Ubuntu14.01 LTS下安裝OpenMPI

安裝與測試

系統：Ubuntu14.04 LTS

安裝OpenMPI

Ctrl+Alt+T 打開終端，輸入命令直接安裝
:~$ sudo apt-get install libopenmpi-dev openmpi-bin openmpi-doc

測試是否安裝成功

代碼

//HelloMpi.c
#include <stdio.h>
#include <mpi.h>

int main(int argc, char *argv[])
{
    int myrank, nprocs;

    MPI_Init(&argc, &argv);
    MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
    MPI_Comm_rank(MPI_COMM_WORLD, &myrank);

    printf("hello from processror %d of %d\n", myrank, nprocs);

    MPI_Finalize();

    return 0;
}

編譯

:~/Mine/code/testMPI$ mpicc HelloMpi.c -o HelloMpi

執行

:mpiexec -n 4 HelloMpi

輸出結果

hello from processror 2 of 4
hello from processror 3 of 4
hello from processror 0 of 4

參考

Ubuntu 12.04 架設 OpenMPI Cluster