Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] Factor of 10 loss in performance with 1.3.x
From: Steve Kargl (sgk_at_[hidden])
Date: 2009-04-07 14:11:20


On Tue, Apr 07, 2009 at 08:39:20AM -0700, Eugene Loh wrote:
> Iain Bason wrote:
>
> >But maybe Steve should try 1.3.2 instead? Does that have your
> >improvements in it?
>
> 1.3.2 has the single-queue implementation and automatic sizing of the sm
> mmap file, both intended to fix problems at large np. At np=2, you
> shouldn't expect to see much difference.
>

Unfortunately, you are correct. :(

I downloaded last nights 1.3.2 pre-release tarball. It
gives similar results.

-- 
Steve