Hi Jody, thank you for the response. Specifying the number of processes in the manner you provided (mpirun -np 2 hostfile hosts.txt ilk)
Does indeed succeed. All processes are launched on my local machine which has two slots. If I change the command to: mpirun -np 3 hostfile hosts.txt ilk It however fails giving the same error. -------------------------------------------------------------------------- mpirun noticed that the job aborted, but has no info as to the process that caused that situation. -------------------------------------------------------------------------- On Sat, Oct 23, 2010 at 10:13 AM, jody <jody....@gmail.com> wrote: > 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 > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
