Re: [Condor-users] reserving node for special jobs

[Brooklin Gore <bgore@xxxxxxxxxx>]

Is there a way to have two VMs on a machine and dedicate one of them to
always running jobs from only a given user? It seems like there have been
configs for this discussed in the past -- if so, can someone point me to the
docs? Thanks, ~Brooklin

PS: Hi Ian


> From: Ian Chesal <ICHESAL@xxxxxxxxxx>
> Reply-To: Condor-Users Mail List <condor-users@xxxxxxxxxxx>
> Date: Thu, 7 Sep 2006 17:59:19 -0400
> To: Condor-Users Mail List <condor-users@xxxxxxxxxxx>
> Conversation: [Condor-users] reserving node for special jobs
> Subject: Re: [Condor-users] reserving node for special jobs
> 
>> We have a set of compute nodes, all identical in hardware and OS. If I
> 
>> want to reserve one or two of these nodes for a special set of jobs,
> how 
>> can Condor help me do that? And how do I launch the special jobs into
>> those reserved nodes?
> 
> You can't "reserve" nodes but you can specify that some nodes are
> available to run only jobs that are tagged in a certain way. Lets say
> you submit your special jobs with a custom classad attribute by adding
> the following to your submit ticket:
> 
> +MySpecialJob = True
> 
> You can make a machine in your pool run *only* these specially tagged
> jobs by setting:
> 
> Start = MySpecialJob
> 
> in your condor_config.local file on the machine. This machine will sit
> idle if you don't have jobs in the system tagged as special. If you
> don't want to be that strict you can make this machine prefer special
> jobs over not-special jobs and have special jobs preempt not-special
> jobs by setting:
> 
> Start = True
> Rank = (MySpecialJob * 10)
> 
> in your condor_config.local file. Now that machine will run all jobs but
> it *prefers* your special jobs so Condor's preemption mechanism cuts in
> a boots off not-special jobs from this machine if there are special jobs
> in the queue.
> 
> - Ian
> 
> 
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