我在 ThinkPad T420（Core i5 2450M，升级到 8GB RAM）中有 Manjaro Linux 17.1.10（内核 4.17.0-2），我正在尝试使用 OpenMPI（版本 3.1.0）运行一些 C 程序，但我' m 在运行程序时遇到问题。
我能够从终端使用mpicc和 Ecplipse 的“构建”选项编译它们而不会出现问题，但是当我尝试从终端或在 Eclipse 中运行它们时（在启动选项中配置为并行应用程序）我遇到错误，无论我运行的代码。
我正在尝试运行 Ecipse Parallel 附带的 MPI hello world C 项目：
/*
============================================================================
Name : test.c
Author : MGMX
Version : 1
Copyright : GNU 3.0
Description : Hello MPI World in C
============================================================================
*/
#include <stdio.h>
#include <string.h>
#include "mpi.h"
int main(int argc, char* argv[]){
int my_rank; /* rank of process */
int p; /* number of processes */
int source; /* rank of sender */
int dest; /* rank of receiver */
int tag=0; /* tag for messages */
char message[100]; /* storage for message */
MPI_Status status ; /* return status for receive */
/* start up MPI */
MPI_Init(&argc, &argv);
/* find out process rank */
MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
/* find out number of processes */
MPI_Comm_size(MPI_COMM_WORLD, &p);
if (my_rank !=0){
/* create message */
sprintf(message, "Hello MPI World from process %d!", my_rank);
dest = 0;
/* use strlen+1 so that '\0' get transmitted */
MPI_Send(message, strlen(message)+1, MPI_CHAR,
dest, tag, MPI_COMM_WORLD);
}
else{
printf("Hello MPI World From process 0: Num processes: %d\n",p);
for (source = 1; source < p; source++) {
MPI_Recv(message, 100, MPI_CHAR, source, tag,
MPI_COMM_WORLD, &status);
printf("%s\n",message);
}
}
/* shut down MPI */
MPI_Finalize();
return 0;
}
如果我使用./test没有参数的简单程序运行程序，我有一个输出：
[mgmx@ThinkPad Debug]$ ./test
Hello MPI World From process 0: Num processes: 1
但是如果我使用mpirun我会得到不同的结果，具体取决于我选择的 pof process ( -np #) 数量；但他们都抛出错误：
[mgmx@ThinkPad Debug]$ mpirun -np 0 test
-------------------------------------------------------
Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
-------------------------------------------------------
[mgmx@ThinkPad Debug]$ mpirun -np 1 test
-------------------------------------------------------
Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
-------------------------------------------------------
--------------------------------------------------------------------------
mpirun detected that one or more processes exited with non-zero status, thus causing
the job to be terminated. The first process to do so was:
Process name: [[49948,1],0]
Exit code: 1
--------------------------------------------------------------------------
[mgmx@ThinkPad Debug]$ mpirun -np 2 test
-------------------------------------------------------
Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
-------------------------------------------------------
[mgmx@ThinkPad Debug]$ mpirun -np 3 test
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 3 slots
that were requested by the application:
test
Either request fewer slots for your application, or make more slots available
for use.
--------------------------------------------------------------------------
[mgmx@ThinkPad Debug]$ mpirun -np 4 test
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 4 slots
that were requested by the application:
test
Either request fewer slots for your application, or make more slots available
for use.
--------------------------------------------------------------------------
我在本地运行一切。
这是--versionmpicc 和 mpirun 中的输出：
[mgmx@ThinkPad Debug]$ mpicc --version
gcc (GCC) 8.1.1 20180531
Copyright (C) 2018 Free Software Foundation, Inc.
Esto es software libre; vea el código para las condiciones de copia. NO hay
garantía; ni siquiera para MERCANTIBILIDAD o IDONEIDAD PARA UN PROPÓSITO EN
PARTICULAR
[mgmx@ThinkPad Debug]$ mpirun --version
mpirun (Open MPI) 3.1.0
Report bugs to http://www.open-mpi.org/community/help/
我还以各种方式安装了 OpenMPI：使用 pacman 从 Manjaro 存储库，使用 pamac（pacman/yaourt GUI）和使用 yaourt 和 pamac 的 AUR 的 git 版本。