Re: [Condor-users] Dagman & Job Priorities

["Peter F. Couvares" <pfc@xxxxxxxxxxx>]

Mark,

I believe Condor's 40-slot queue priority range was design to mimic the 
unix process priority range -- but I agree this can be constraining, 
and I'm not sure it makes sense anymore.  I had already planned to look 
into whether it would be difficult to expand, or whether there are any 
good reasons not to... I'll let you know.

Thanks,

-Peter



On Feb 9, 2005, at 6:12 AM, SILBERSTEIN MARK wrote:

> The problem with solution to add job priorities is a hard one, mainly 
> due
> to the fact that Condor has only 40 priority levels for jobs ( is there
> any explanation why that??? ). If it was possible to put any
> integer as a priority, this would definitely help, since then every DAG
> and its jobs would get its own priority level, enforcing correct FIFO
> order ( except for boundaries ). With only 40 priorities available one
> should handle a watchdog to monitor and increase periodically
> priorities of all the jobs in the DAG, after all jobs of another DAG
> finished ( i.e. say you have 3 dags running dag A - prio 1, dag B - 
> prio2,
> dag C prio 3. when dag A completes, you move dag B to prio 1, and dag 
> C to
> prio 2 ). This is not trivial at all.
--
Peter Couvares                        University of Wisconsin-Madison
Condor Project Research               Department of Computer Sciences
pfc@xxxxxxxxxxx                       1210 W. Dayton St. Rm #4241
(608) 265-8936                        Madison, WI 53706-1685