[mpich-discuss] Running one MPI program from another

[Jayesh Krishna]

Hi,
 Try launching "mpiexec -n 1 prog" instead of "prog" with CreateProcess().
Let us know if it works for you.

Regards,
Jayesh

--------------------------------------------------------------------------
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From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Rod Cook
Sent: Wednesday, April 22, 2009 10:12 AM
To: Jayesh Krishna
Cc: mpich-discuss at mcs.anl.gov
Subject: Re: [mpich-discuss] Running one MPI program from another


Jayesh,
 
I can get my example code to work using MPI_Comm_spawn but it doesn't work
for my actual application. The problem with using MPI_Comm_spawn is that I
don't know how to tell that the spawned program has finished -- this is
why I used CreateProcess because it is possible to wait for the program to
terminate. The spawned program could be a non MPI executable or a
standalone MPI executable which can't communicate with the program calling
MPI_Comm_spawn. 
 
Cheers,
 
Rod
----- Original Message ----- 
From: Jayesh Krishna 
To: 'Rod Cook' 
Cc: mpich-discuss at mcs.anl.gov 
Sent: Wednesday, April 22, 2009 3:40 PM
Subject: RE: [mpich-discuss] Running one MPI program from another


Hi,
 Did you try MPI_Comm_spawn() ?
 
Regards,
Jayesh



--------------------------------------------------------------------------
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From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Rod Cook
Sent: Wednesday, April 22, 2009 7:50 AM
To: mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] Running one MPI program from another


Hi,
 
I am trying to run an MPI program (prog) from another MPI program (test)
using CreateProcess under Windows XP.  I am using MPICH2 v1.08. 
 
Source for test
#include "stdafx.h"
#include <afx.h>
#include "mpi.h"
int run_program( char * program )
{
   STARTUPINFO si;
   PROCESS_INFORMATION pi;
   ZeroMemory( &si, sizeof(si) );
   si.cb = sizeof(si);
   ZeroMemory( &pi, sizeof(pi) );
   if( !CreateProcess( NULL, program, NULL, NULL, FALSE, 0, NULL, NULL,
&si, &pi )  ) 
   {
      return -1;
   }
   WaitForSingleObject( pi.hProcess, INFINITE );
   CloseHandle( pi.hProcess );
   CloseHandle( pi.hThread );
   return 0;
}
int main(int argc, char* argv[])
{
   MPI_Init(NULL,NULL);
   run_program("prog");
   MPI_Finalize();
 return 0;
}

Source for prog
#include "stdafx.h"
#include "mpi.h"
int main(int argc, char* argv[])
{
   MPI_Init( NULL, NULL );
   MPI_Finalize();
   return 0;
}

I get the following error when I run test:
 
>mpiexec -n 1 test
MPIDU_Sock_post_connect failed.
[0] PMI_ConnectToHost failed: unable to post a connect to Yellowtail
yellowtail
                 :2057, error: Unknown error class, error stack:
MPIDU_Sock_post_connect(1228): unable to connect to Yellowtail yellowtail 
 on port 2057, exhausted all endpoints (errno -1)
MPIDU_Sock_post_connect(1275): unable to connect to                  on
port 2057,
 No connection could be made because the target machine actively refused
it. (er
rno 10061)
MPIDU_Sock_post_connect(1275): unable to connect to yellowtail on port
2057, No
connection could be made because the target machine actively refused it.
(errno
10061)
MPIDU_Sock_post_connect(1275): unable to connect to Yellowtail on port
2057, No
connection could be made because the target machine actively refused it.
(errno
10061)
uPMI_ConnectToHost returning PMI_FAIL
[0] PMI_Init failed.
Fatal error in MPI_Init: Other MPI error, error stack:
MPIR_Init_thread(294): Initialization failed
MPID_Init(83)........: channel initialization failed
MPID_Init(334).......: PMI_Init returned -1
>
 
In my actual application prog is either a standalone MPI program which I
can't change or a non MPI program (in which case test works) . 
 
 
I'd be gratefull for any help.
 
 
Thanks
 
Rod Cook
 
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