Hi Brandon Does it work if you try this: mpirun -np 2 hostfile hosts.txt ilk
(see http://www.open-mpi.org/faq/?category=running#simple-spmd-run) jody On Sat, Oct 23, 2010 at 4:07 PM, Brandon Fulcher <min...@gmail.com> wrote: > Thank you for the response! > > The code runs on my own machine as well. Both machines, in fact. And I did > not build MPI but installed the package from the ubuntu repositories. > > The problem occurs when I try to run a job using two machines or simply try > to run it on a slave from the master. > > the actual command I have run along with the output is below: > > mpirun -hostfile hosts.txt ilk > -------------------------------------------------------------------------- > mpirun noticed that the job aborted, but has no info as to the process > that caused that situation. > -------------------------------------------------------------------------- > > where hosts.txt contains: > 192.168.0.2 cpu=2 > 192.168.0.6 cpu=1 > > > If it matters the same output is given if I define a remote host in the > command such as (if I am on 192.168.0.2) > mpirun -host 192.168.0.6 ilk > > Now if I run it locally, the job succeeds. This works from either cpu. > mpirun ilk > > > Thanks in advance. > > On Fri, Oct 22, 2010 at 11:59 PM, David Zhang <solarbik...@gmail.com> wrote: >> >> since you said you're new to MPI, what command did you use to run the 2 >> processes? >> >> On Fri, Oct 22, 2010 at 9:58 PM, David Zhang <solarbik...@gmail.com> >> wrote: >>> >>> 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 >> >> >> >> -- >> David Zhang >> University of California, San Diego >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
