Marcelo,
 
Have you tried setting a CLASSCFG directive for the queue you're trying to 
manage?  For example, we have a group that is only allowed to have a max number 
of idle nodes of 64 in the queue "work", and that looks like this:
 
CLASSCFG[work] MAXINODE[GROUP:group1]=64
 
--Joe

________________________________

From: [email protected] on behalf of Marcelo Zimmer
Sent: Thu 2/25/2010 4:18 PM
To: [email protected]
Subject: Re: [Mauiusers] Fairness Policy Configuration


Hi,

Thank you for your prompt response, but the suggestions don't seem to be 
solving my problem. Actually, I've tracked the submitted jobs with the "showq" 
command and I couldn't see any blocked ones even if the number of idle jobs was 
greater than the number I wast trying to specify (actually, all non-running 
jobs appeared with the flag "Q"). As I said in the previous email, my aim is to 
set a quite soft policy, which is basically allowing users to use as many 
available processors as possible (in an extreme case, a single user can even 
take control of the whole cluster and use all processors at once), while 
precluding users to submit an extesive number of jobs that stay on "Q" mode, 
which would result in people "taking control" of the cluster during on month, 
for instance. As result, I found 5 a good number to set as the maximum number 
of idle jobs per user.

This way, as far as I could understand, the number specified in 
"max_user_queuable" or "max_queuable" flags in torque (PBS) indicates the 
maximum number of jobs a user can put in queue, regardless of its status 
(either running or idle). For that, I found very hard to set a number for those 
flags, because they would result either in unused processors while there's just 
one person in need to use the cluster or in setting a high value that would 
allow user to keep a long list of idle jobs and preventing (or delaying someone 
else's job to start) others to use the cluster.

Do I still missing anything?

Best regards,

Marcelo Zimmer

-- 
===================================================
                               Marcelo Zimmer S. Flores
                                 (PhD Physics Student)

Address:
       Universidade Estadual de Campinas - UNICAMP
       Instituto de Fisica Gleb Wataghin - IFGW
       Grupo de Solidos Organicos e Novos Materiais - GSONM
       Departamento de Fisica Aplicada (DFA) - Room 61
       Campinas - Sao Paulo - Brazil
       13083-970
       Caixa Postal: 6165
       [email protected]
===================================================

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