[mpich-discuss] Error with MPI_Comm_spawn on MPICH2

[Shah, Mrunal J]

Thanks Rajeev,

I am student at Georgia Tech and am working on an MPICH installation present on one of the college clusters.
I will ask for permissions to re install it and let you know if I see anything out of the ordinary.

Thanks a lot again!
Mrunal

----- Original Message -----
From: "Rajeev Thakur" <thakur at mcs.anl.gov>
To: mpich-discuss at mcs.anl.gov
Sent: Monday, November 24, 2008 11:59:40 PM GMT -05:00 US/Canada Eastern
Subject: Re: [mpich-discuss] Error with MPI_Comm_spawn on MPICH2

I can run this with 1.0.8 without any problem. The program is too simple to
fail. Probably something wrong with your installation. Did you use any
special configure options or compilers? Try starting from scratch again with
a fresh untar of the tar file. If you notice anything unusual in the output
of configure and make that is printed on the screen, send it to us.

Rajeev 

> -----Original Message-----
> From: mpich-discuss-bounces at mcs.anl.gov 
> [mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Shah, Mrunal J
> Sent: Monday, November 24, 2008 10:33 PM
> To: mpich-discuss at mcs.anl.gov
> Subject: Re: [mpich-discuss] Error with MPI_Comm_spawn on MPICH2
> 
> #include "mpi.h"
> #include <stdio.h>
> 
> int main(int argc, char **argv)
> {
>         int size, myRank;
>         MPI_Comm parent;
>         MPI_Init(&argc, &argv);
>         MPI_Comm_get_parent(&parent);
>         MPI_Comm_rank(MPI_COMM_WORLD, &myRank);
> 
>         MPI_Comm_remote_size(parent, &size);
>         printf("IN WORKER: parent size %d\n", size);
> 
>         printf("\nhello from worker %d", myRank);
>         MPI_Finalize();
>         return 0;
> }
> 
> Thanks again!
> Mrunal
> 
> ----- Original Message -----
> From: "Rajeev Thakur" <thakur at mcs.anl.gov>
> To: mpich-discuss at mcs.anl.gov
> Sent: Monday, November 24, 2008 11:20:42 PM GMT -05:00 
> US/Canada Eastern
> Subject: Re: [mpich-discuss] Error with MPI_Comm_spawn on MPICH2
> 
> Can you send the worker program as well?
> 
> Rajeev 
> 
> > -----Original Message-----
> > From: mpich-discuss-bounces at mcs.anl.gov 
> > [mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of 
> Shah, Mrunal J
> > Sent: Monday, November 24, 2008 10:18 PM
> > To: mpich-discuss at mcs.anl.gov
> > Subject: Re: [mpich-discuss] Error with MPI_Comm_spawn on MPICH2
> > 
> > Using 1.0.8
> > Running on a x86_64 machine
> > 
> > The test program:
> > 
> > #include "mpi.h"
> > 
> > int main(int argc, char **argv)
> > {
> >         int world_size, flag, myRank;
> >         MPI_Comm everyone;
> > 
> >         MPI_Init(&argc, &argv);
> >         MPI_Comm_size(MPI_COMM_WORLD, &world_size);
> >         MPI_Comm_rank(MPI_COMM_WORLD, &myRank);
> > 
> >         printf("world_size %d\n", world_size);
> > 
> >         MPI_Comm_spawn("./workertest", MPI_ARGV_NULL, world_size, 
> > MPI_INFO_NULL, 0, MPI_COMM_WORLD, &everyone, MPI_ERRCODES_IGNORE);
> > 
> >         printf("hello from master %d", myRank);
> >         MPI_Finalize();
> >         return 0;
> > }
> > 
> > Thanks,
> > Mrunal
> > 
> > ----- Original Message -----
> > From: "Rajeev Thakur" <thakur at mcs.anl.gov>
> > To: mpich-discuss at mcs.anl.gov
> > Sent: Monday, November 24, 2008 11:04:03 PM GMT -05:00 US/Canada 
> > Eastern
> > Subject: Re: [mpich-discuss] Error with MPI_Comm_spawn on MPICH2
> > 
> > Which version of MPICH2 are you using and on what platform? 
> > Please send us a small test program if you can.
> > 
> > Rajeev
> > 
> > > -----Original Message-----
> > > From: mpich-discuss-bounces at mcs.anl.gov 
> > > [mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of
> > Shah, Mrunal J
> > > Sent: Monday, November 24, 2008 8:32 PM
> > > To: mpich-discuss at mcs.anl.gov
> > > Subject: [mpich-discuss] Error with MPI_Comm_spawn on MPICH2
> > > 
> > > Hi All,
> > > 
> > > I am having issues with spawning processes using MPI_Comm_spawn.
> > > Using a simple example for spawning processes:
> > > 
> > >  MPI_Comm_spawn("./workertest", MPI_ARGV_NULL, world_size, 
> > > MPI_INFO_NULL, 0, MPI_COMM_WORLD, &everyone, MPI_ERRCODES_IGNORE);
> > > 
> > > The error I get is:
> > > Fatal error in MPI_Comm_spawn: Internal MPI error!, error stack:
> > > MPI_Comm_spawn(130)............: 
> > > MPI_Comm_spawn(cmd="./workertest", argv=(nil), maxprocs=4, 
> > > MPI_INFO_NULL, root=0, MPI_COMM_WORLD, intercomm=0x7fbffff6ac,
> > > errors=(nil)) failed
> > > MPIDI_Comm_spawn_multiple(172).:
> > > MPID_Open_port(65).............:
> > > MPIDI_CH3_Get_business_card(99): Internal MPI 
> error!universe_size 1
> > > 
> > > I believe this could be a machine specific error, since 
> running the 
> > > same code on another machine with a different 
> implementation of MPI
> > > (OpenMPI) does not give any errors.
> > > But I am not sure what I am missing here.
> > > 
> > > Thanks!
> > > Mrunal
> > > 
> > 
> > 
> 
>