[mpich-discuss] Maximum number of communicators

[Dave Goodell]

Test code indeed would be helpful.

You may get better warnings about context ID and/or communicator leaks if you configure a stock MPICH with "--enable-g=all".

-Dave

On Feb 23, 2013, at 7:05 PM CST, Jeff Hammond wrote:

> It's 2048 in all MPICH2-derived implementations that I know about,
> including the ones used on BGP and BGQ.
> 
> Since I know what your issue is already, I think the problem has
> something to do with context id leaking.  You should post your test
> code.
> 
> Jeff
> 
> On Sat, Feb 23, 2013 at 6:24 PM, Nichols A. Romero
> <naromero at alcf.anl.gov> wrote:
>> Hi,
>> 
>> What is the maximum number of communicators in the MPICH that is used on BG/P vs. that used on BG/Q?
>> 
>> Sent from my iPhone
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> 
> 
> -- 
> Jeff Hammond
> Argonne Leadership Computing Facility
> University of Chicago Computation Institute
> jhammond at alcf.anl.gov / (630) 252-5381
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