From edd at debian.org  Wed Mar  3 20:57:10 2010
From: edd at debian.org (Dirk Eddelbuettel)
Date: Wed, 3 Mar 2010 13:57:10 -0600
Subject: [Rd] Rmpi on CentOS (64bit)
In-Reply-To: <alpine.LFD.2.00.1003031921550.29730@gannet.stats.ox.ac.uk>
References: <20100303065320.GA633@slingshot.co.nz>
	<alpine.LFD.2.00.1003030732430.11176@gannet.stats.ox.ac.uk>
	<20100303191529.GB633@slingshot.co.nz>
	<alpine.LFD.2.00.1003031921550.29730@gannet.stats.ox.ac.uk>
Message-ID: <19342.48918.686531.962037@ron.nulle.part>


On 3 March 2010 at 19:24, Prof Brian Ripley wrote:
| On Thu, 4 Mar 2010, Patrick Connolly wrote:
| 
| > On Wed, 03-Mar-2010 at 08:42AM +0000, Prof Brian Ripley wrote:
| >
| >> There are many different versions of OpenMPI about.  It looks like
| >> you have one that is set up for specialized hardware.  Either this
| >> is the wrong version or a configuration error, and you will need to
| >> talk to your 'local System Administrator'.
| >
| > He knows less about it (MPI, at least) than I do.  Perhaps this is
| > 'specialized hardware' in that it's a dual quad-core processor machine
| > -- but I'd have thought that's not particularly special nowadays.
| 
| No, it is high-speed interconnects, used in high-performance clusters.

A similar issue once arose on Debian as we built Open MPI with the IB libs
even though most people don't have suitable Inifiniband hardware. In our case
that lead to a noisy warning; upstream later suppressed the warning given
certain conditions.  

You could try to suppress the probe for IB which we did (in the older 1.2.*
series of OpenMPI) via

   # Disable the use of InfiniBand
   #   btl = ^openib
   btl = ^openib

in  /etc/openmpi/openmpi-mca-params.conf

Hth, Dirk

-- 
  Registration is open for the 2nd International conference R / Finance 2010
  See http://www.RinFinance.com for details, and see you in Chicago in April!



[Rd] Rmpi on CentOS (64bit)
Dirk Eddelbuettel