Re: [Condor-users] limiting job type on a host

[Tom Schmidt <tschmidt@xxxxxxxxxx>]

You can tell condor that the system has only 2 CPU cores instead of it 
reporting the 8 cores.  Put a line like this in the config file for the 
host.

# Only allow 2 condor jobs at a time by reporting 2 cpus
NUM_CPUS = 2


Tom

Frédéric Bastien wrote:
> Hi,
>
> I have some computer with condor that have 8 cores. The trouble that I
> have is that some of our jobs are limited by io, not by cpu. All data
> is already copied on the local computer. It is so much io bound that
> we can run only 2 such job on each node even if they have 8 cores.
>
> What I want is to allow only 2 such jobs by computer at the same time.
> Do you know how I can do it? I inspired myself from
>  https://lists.cs.wisc.edu/archive/condor-users/2006-November/msg00068.shtml
> to  modify my configuration file, but it fail. What I think fail it
> that I need to reference the classAd of  the jobs executing on each
> slot. Do you know how to do it? Is their something like slot1_target
> or Target_slot1? If I use "STARTD_SLOT_ATTRS= State, Target.IOJob",
> slotX_target.IOJob do not appear in condor_status...
>
> Here is the last configuration that I tried:
>
> I add option in the submit file to tell it is io bound job
>
> +IOJob = True
>
> in the condor_config.local file, I have:
>
> ExecIOJob = ( (SlotID==1 && slot1_State =?= "Claimed" && target.IOJob)
> || (SlotID==2 && slot2_State =?= "Claimed" && target.IOJob) ||
> (SlotID==3 && slot3_State =?= "Claimed" && target.IOJob) || (SlotID==4
> && slot4_State =?= "Claimed" && target.IOJob) )
>
> STARTD_SLOT_ATTRS = ExecJob, ExecIOJob, State
> NBIOJob = ( slot1_ExecIOJob + slot2_ExecIOJob + slot3_ExecIOJob +
> slot4_ExecIOJob )
>
> START = $(START) && ( Target.ExecIOJob =!= True || ( $(NBIOJob) <= 1 ) )
> NUM_SLOTS = 4
>
> thanks for your time
>
> Frederic Bastien
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--
Tom L. Schmidt, Manager/SysAdmin Characterization Equipment
Micron Technology, Inc.  http://www.micron.com/
8000 S. Federal Way  P.O. Box 6  Mail Stop 01-371  Boise, Idaho USA 
83707-0006
mailto:tschmidt@xxxxxxxxxx  http://peunix.micron.com/