MPI 训练之一 - 技术栈

root@dcs-977baf93-0:/workspace/pthread# mpic++ t07.cpp -o 2.out

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 4 ./2.out

Hello World from process 1 of 4

Hello World from process 0 of 4

Hello World from process 2 of 4

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 6 ./2.out

Hello World from process 3 of 6

===================================================================================

= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES

= PID 235 RUNNING AT dcs-977baf93-0

= EXIT CODE: 9

= CLEANING UP REMAINING PROCESSES

= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES

===================================================================================

YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Killed (signal 9)

This typically refers to a problem with your application.

Please see the FAQ page for debugging suggestions

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 2 ./2.out

Hello World from process 1 of 2

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 1 ./2.out

Hello World from process 0 of 1

root@dcs-977baf93-0:/workspace/pthread# mpic++ t07.cpp -o 2.out

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 1 ./2.out

Hello World from process 0 of 1

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 3 ./2.out

Hello World from process 0 of 3

Hello World from process 1 of 3

Hello World from process 2 of 3

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 4 ./2.out

Hello World from process 2 of 4

Hello World from process 3 of 4

Hello World from process 1 of 4

Hello World from process 0 of 4

root@dcs-977baf93-0:/workspace/pthread# mpirun -n 2 ./2.out

Hello World from process 1 of 2

Hello World from process 0 of 2

root@dcs-977baf93-0:/workspace/pthread#

cpp 复制代码

#include <mpi.h>
#include <stdio.h>


int main(int argc, char** argv) {
    int process_Rank, size_Of_Cluster;

    MPI_Init(&argc, &argv);
    MPI_Comm_size(MPI_COMM_WORLD, &size_Of_Cluster);
    MPI_Comm_rank(MPI_COMM_WORLD, &process_Rank);

    printf("Hello World from process %d of %d\n", process_Rank,
           size_Of_Cluster);
    MPI_Finalize();
    return 0;
}