Hi Jeff, thanks for responding. mpirun hostname returns the name of the local machine.
On Sat, Oct 23, 2010 at 11:27 AM, Jeff Squyres (jsquyres) < jsquy...@cisco.com> wrote: > I didn't notice if it came up earlier - are you running the same version of > OMPI on each node? > > What happens if you try mpirunning hostname (ie not an MPI app)? > > Sent from my PDA. No type good. > > On Oct 23, 2010, at 12:07 PM, "Brandon Fulcher" <min...@gmail.com> wrote: > > 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> > 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> >> 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> >> 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> >> 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> >> 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> >> 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> >> 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>us...@open-mpi.org >> >>>> <http://www.open-mpi.org/mailman/listinfo.cgi/users> >> 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>us...@open-mpi.org >> >> <http://www.open-mpi.org/mailman/listinfo.cgi/users> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > >> > >> > _______________________________________________ >> > users mailing list >> > <us...@open-mpi.org>us...@open-mpi.org >> > <http://www.open-mpi.org/mailman/listinfo.cgi/users> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > >> >> _______________________________________________ >> users mailing list >> <us...@open-mpi.org>us...@open-mpi.org >> <http://www.open-mpi.org/mailman/listinfo.cgi/users> >> 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 >
