[MPICH] Initializing MPICH2

[Rajeev Thakur]

MPI-2 has a feature called Singleton MPI_Init by which a process that was
not started as an MPI job can become an MPI process by calling MPI_Init.
http://www.mpi-forum.org/docs/mpi-20-html/node112.htm 
However, the size of MPI_COMM_WORLD will be 1; that is, any number of
processes can call MPI_Init, but each will get its own comm_world of size 1.

Rajeev


> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Steve Angelovich
> Sent: Thursday, July 20, 2006 12:00 PM
> To: mpich-discuss at mcs.anl.gov
> Subject: [MPICH] Initializing MPICH2
> 
> All,
> 
> Is it possible to initialize mpich2 if the application has not been 
> started via mpiexec? I know the size of the group and the 
> rank of each exec.
> 
> I thought I read something about how to do this to help with 
> debugging 
> but I can't find the document anymore.
> 
> Thanks,
> Steve
> 
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