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Subject: Re: [OMPI users] Allgather in inter-communicator bug,
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-05-20 14:58:22

On May 20, 2010, at 2:52 PM, Lisandro Dalcin wrote:

> Jeff, you should really learn Python and give a try to mpi4py. Even if
> you do not consider Python a language for serious, production work
> :-), it would be a VERY productive one for writing tests targeting
> MPI.

Freely admitted laziness on my part (read: not enough cycles in the day to do what Cisco already pays me to do...). :-(

> However, mpi4py have a BIG issue: not enough man-power for
> writing decent documentation.

Same issue here! Maybe we should Google Wave it... ;-)

> So you are suggesting my code could be buggy? No way ! ;-) . Slightly
> more serious: almost all my bug reports were discovered while
> unittesting mpi4py and getting failures when running with Open MPI, so
> I'm really confident about my Python bindings.

I can't tell you how much we appreciate these reports.

I know exactly the position you're in; I did the same thing years ago (ick!) with the is (was!) the MPI C++ bindings and with Object Oriented MPI (OOMPI). They were portable packages that ran on lots of different MPI's; their respective test suites found lots of problems in various MPI implementations. The LAM/MPI guys sent me a t-shirt for my efforts, which pretty much locked in my long slide into the deep, dark world of MPI implementers. ;-)

Jeff Squyres
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