your code works on mine machine. could be they way you build mpi. On Fri, Oct 22, 2010 at 7:26 PM, Brandon Fulcher <min...@gmail.com> wrote:
> Hi, I am completely new to MPI and am having trouble running a job between > two cpus. > > The same thing happens no matter what MPI job I try to run, but here is a > simple 'hello world' style program I am trying to run. > > #include <mpi.h> > #include <stdio.h> > > int main(int argc, char **argv) > { > int *buf, i, rank, nints, len; > char hostname[256]; > > MPI_Init(&argc,&argv); > MPI_Comm_rank(MPI_COMM_WORLD, &rank); > gethostname(hostname,255); > printf("Hello world! I am process number: %d on host %s\n", rank, > hostname); > MPI_Finalize(); > return 0; > } > > > On either CPU, I can successfully compile and run, but when trying to run > the program using two CPUS it fails with this output: > > -------------------------------------------------------------------------- > mpirun noticed that the job aborted, but has no info as to the process > that caused that situation. > -------------------------------------------------------------------------- > > > With no additional information or errors, What can I do to go about > finding out what is wrong? > > > > I have read the FAQ and followed the instructions. I can ssh into the > slave without entering a password and have the libraries installed on both > machines. > > The only thing pertinent I could find is this faq > http://www.open-mpi.org/faq/?category=running#missing-prereqs but I do > not know if it applies since I have installed open mpi from the Ubuntu > repositories and assume the libraries are correctly set. > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- David Zhang University of California, San Diego