C An Error of mpirun

[RH.]

Hi,


I installed openmpi (version 4.0.0), namely mpicc, mpicxx and mpirun, via package from official site of openmpi. When compiling with mpicc it's okay. But error occurs when I try to run the resulted executable binary file with mpirun. The error is:

    All nodes which are allocated for this job are already filled.

I also tried it on CentOS 7 platform, there is no error.


The source code is:

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

int main(int argc, char **argv)
{

  int node;
  MPI_Init(&argc,&argv);
  MPI_Comm_rank(MPI_COMM_WORLD,&node);

  printf("Hello world form Node %d\n",node);

  MPI_Finalize();

  return 0;

}

I would appreciate it if you can help me solve this problem. Thank you!

RH.

 

[RH.]

Okay, now I find this https://stackoverflow.com/questions/38087327/mpi-spawn-not-enough-slots-available-all-which-nodes-are-allocated-for-this-j.
It works for me by adding -oversubscribe.

 

[SirDice]

I installed openmpi (version 4.0.0), namely mpicc, mpicxx and mpirun, via package from official site of openmpi.

Use the port/package: net/openmpi.