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[Condor-users] On-demand priority access to resources
- Date: Tue, 3 Aug 2004 09:37:54 -0700
- From: "Ian Chesal" <ICHESAL@xxxxxxxxxx>
- Subject: [Condor-users] On-demand priority access to resources
A colleague asked a similar question without any answers, so I thought
I'd try rephrasing things.
We are wondering how, in the Condor world, the following scenario is
I have lots of users and lots of machines in the Condor pool. All users
run vanilla jobs of varying length, between 1-10 hours of comuptation
time long. User A suddenly has a very, very important experiment that
must take priority over all the other jobs in the system. How do you let
User A trump all other jobs? Based on Condor's manual and the
description of the decaying user priority it would seem that User A
would have "save up" system time by not submitting jobs for a few days
and letting their user priority reset to the highest value.
What if waiting for the user priority to reset wasn't an option? How
does User A gain full access to all the resources and trump everyone
else? Do the condor admins have to intervene to broker this type of
priority access or can User A do something to indicate this one
experiment is the top priority regardless of user priorities?
Any insight into how Condor behaves, or how others manage large Condor
installations with a large user base, would be greatly appreciated.
Ian R. Chesal <ichesal@xxxxxxxxxx>
Senior Software Engineer
Toronto Technology Center
Tel: (416) 926-8300