[MPICH] Changing the comm size at runtime

[Rajeev Thakur]

You can use all MPI communication functions, including collectives. It will
be the intercommunicator version of the collectives defined in MPI-2, as the
communicator returned by a connect-accept is an intercommunicator.

Rajeev
  

> -----Original Message-----
> From: Patrick Gräbel [mailto:pgraebel at stud.fh-dortmund.de] 
> Sent: Wednesday, March 14, 2007 2:29 PM
> To: Rajeev Thakur
> Cc: mpich-discuss at mcs.anl.gov
> Subject: Re: [MPICH] Changing the comm size at runtime
> 
> 
> I guess this alternative excludes the usage of collective 
> communication
> like Bcast and Allgather, right?. It's more like handling a socket
> connection where you can stream data, correct?
> 
> Greetings
> Patrick
> 
> Rajeev Thakur wrote:
> > You can try MPI_Comm_connect and MPI_Comm_accept. 
> Independently started
> > processes can connect with these functions and then communicate.
> > 
> > Rajeev 
> 
>