[MPICH] Changing the comm size at runtime

[Rajeev Thakur]

Can you send us the example code?

Rajeev 

> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Patrick Gräbel
> Sent: Tuesday, April 10, 2007 5:09 PM
> To: mpich-discuss at mcs.anl.gov
> Subject: Re: [MPICH] Changing the comm size at runtime
> 
> 
> Here is the master's console log, produced by the code draft that I
> posted before. I tried it with Cygwin/gcc now, but the abort happens
> with VC2005 as well:
> 
> opening port... done
> accepting... done
> accepting... done
> merging A and B... done
> creating intercomm AB/C... [cli_0]: aborting job:
> Fatal error in MPI_Intercomm_create: Invalid buffer pointer, 
> error stack:
> MPI_Intercomm_create(575): MPI_Intercomm_create(comm=0x84000003,
> local_leader=0,
>  comm=0x84000001, remote_leader=0, tag=0, 
> newintercomm=0x22cad4) failed
> (unknown)(): Invalid buffer pointer
> rank 0 in job 4  nuke_4675   caused collective abort of all ranks
>   exit status of rank 0: return code 1
> 
> Did I misapply MPI_Intercomm_create?
> 
> Greetings
> Patrick
> 
> 
> Rajeev Thakur wrote:
> > "Invalid buffer pointer" is an odd message to come from
> > MPI_Intercomm_create. Is that what is really printed? Can 
> you send the
> > entire error message.
> > 
> > Rajeev 
> > 
> 
>