Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: Re: [OMPI users] SYSTEM CPU with OpenMPI 1.4.3
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-11-12 12:03:10

On Nov 10, 2010, at 12:31 AM, tmishima_at_[hidden] wrote:

> Recently I installed OpenMPI 1.4.3 on my cluster. I found that
> SYSTEM CPU is higher than older versions of 1.4.X, when I ran
> our FEM program. Further more, OMPI_1.4.3 is a little bit slower
> than 1.4.2. What is the differnece between these two versions, or
> what affects the "SYSTEM CPU" and execution speed?

There shouldn't be any noticeable difference in performance between these versions.

Assumedly you're running your tests on otherwise-idle machines. Is the difference repeatable?

Jeff Squyres
For corporate legal information go to: