[torquedev] Re: [torqueusers] Release of TORQUE 2.3.3

Chris Samuel csamuel at vpac.org
Sat Aug 16 01:24:19 MDT 2008


----- "Josh Butikofer" <josh at clusterresources.com> wrote:

> This is useful for some MPI libraries. For example, SGI MPT (one of
> the main motivators for  pbs_track's introduction) needs to start
> the process that ultimately becomes the MPI task. It can't allow
> pbs_mom to fork()/exec() the process--tm_spawn() won't work in
> this case. (I'm not sure as to why this is the case...I'm not
> an expert on SGI MPT.)

The issues around this were explained quite well in
Kevin Pulo's paper "Managing the APAC NF Altix cluster"
at APAC'05.

http://www.kev.pulo.com.au/publications/apac05/apac05-apacnf-altix.pdf

It comes down to the fact that it relies on arrayd to
start MPI processes..

cheers,
Chris
-- 
Christopher Samuel - (03) 9925 4751 - Systems Manager
 The Victorian Partnership for Advanced Computing
 P.O. Box 201, Carlton South, VIC 3053, Australia
VPAC is a not-for-profit Registered Research Agency


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