Newsgroups: comp.parallel.pvm
From: kba@hrz.tu-chemnitz.de (Karsten Baensch)
Subject: Re: Problem with Kerberos token lifetimes used for AFS
Keywords: AFS , Kerberos Tokens , PVM
Organization: University of Technology Chemnitz, FRG
Date: 16 Jan 96 08:19:34 GMT
Message-ID: <4dfotb$g08@pyrrhus-f.hrz.tu-chemnitz.de>

cussans@desy.de (David Cussans) writes:


>I am running a pvm application on a cluster of 10 SGI-Indies which use AFS
>for their main file systems. Kerberos is used to authenticate access to
>the AFS file systems, with a token lifetime of 24 hours. Any job that runs
>for longer than this ( eg. pvm demons .... ) dies when it next tries to
>access a file on AFS.

>I have looked at Rainer Toebbicke's ARC package
><http://wwwcn1.cern.ch/~rtb> to renew Kerberos tokens, but it looks as if
>it would be a lot of work to interface it to PVM. Has anybody else come
>across this problem or have a solution?

>-- 

>   David Cussans
>   Experiment H1
>   Deutsches Elektronen-Synchrontron
>   22603 Hamburg, Germany
>   E-mail: cussans@desy.de , d.g.cussans@rl.ac.uk 
>   Telephone: {49} (40) 8998 2911

>--------------------------------------------------------------------------

Hallo,
one solution would be to install a (free available) DQS (Distributed Queueing
System from the Supercomputer Computations Research Institute at The Florida
State University) over the SGI cluster. It should be possible to start and
control jobs (eg. pvm daemons ...) including AFS-(re-)authentification via DQS.

Good Luck,

Karsten
--
(  Email: Karsten.Baensch@hrz.tu-chemnitz.de                                ( 
 ) WWW:   http://www.tu-chemnitz.de/~kba/baensch.html                        )
(  Phone: (+49-) 0371/531-1252                                              ( 
 ) Mail:  Technical University, Computing Services, 09107 Chemnitz, Germany  )

