[OMPI users] Warning: librdmacm: couldn't read ABI version. librdmacm: assuming: 4 CMA: unable to get RDMA device list

[Christiano SA]

I'm testing a "hello world" code from the Pacheco[2] book about parallel programming:

 

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

const int MAX_STRING = 100;

int main(void)
{
    char     greeting[MAX_STRING];
    int     comm_sz;
    int    my_rank;

    MPI_Init(NULL, NULL);
    MPI_Comm_size(MPI_COMM_WORLD, &comm_sz);
    MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);

    if(my_rank != 0)
    {
        sprintf(greeting, "Greetings from process %d of %d!\n" , my_rank, comm_sz);
        MPI_Send(greeting, strlen(greeting)+1, MPI_CHAR, 0, 0, MPI_COMM_WORLD);
    }
    else
    {
        printf("Greetings from process %d of %d!\n" , my_rank, comm_sz);
        for(int q=1; q<comm_sz;q++)
        {
            MPI_Recv(greeting, MAX_STRING, MPI_CHAR, q, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE);
            printf("%s\n", greeting);
        }
    }

    MPI_Finalize();

    return 0;

}

 

I run in two computers running Solaris x86 (installed by package [1]) using the command:

solaris@solaris:~/mpi$ mpirun -H localhost,192.168.0.106 a.out

 

The messages are printed:

Greetings from process 0 of 2!
Greetings from process 1 of 2!

And, reading the mpirun manual, I discover the all process's stdout  are redirect to rank 0. Then OK, it sounds is working very nice but the messages below also are shown:

librdmacm: couldn't read ABI version.
librdmacm: assuming: 4
CMA: unable to get RDMA device list

 

I wonder what it means, if I need to fix.

 

Thank you!

 

[1] http://www.oracle.com/technetwork/articles/servers-storage-dev/011-161-ompt-sol11-1441028.html

[2] http://www.cs.usfca.edu/~peter/

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