Re: [HTCondor-users] using job id in START expression

[Greg Thain <gthain@xxxxxxxxxxx>]

On 7/18/23 13:28, Nagaraj Panyam wrote:
> Hi,
>
> Is there a way I can make HTCondor send some jobs to a specific 
> execute node based solely on job id? For example, I am aware what job 
> id's (of newly submitted jobs ) will be in a few hours time , can I 
> plan for a few of the jobs to go to a particular WN? My purpose is to 
> test the WN performance with a few of specific kind of jobs, without 
> the possibility of crashing many jobs on the WN.

In theory, by putting the job id you expect in the START expression of 
the WN in question, but that seems fragile. I'd use a custom classad 
attribute. I'd change the start expression of the WN in question to be 
something like


START = $(START) && Target.IsSpecialJob

and in your job submit file add

MY.IsSpecialJob = true


Now, that doesn't *prevent* your job from running anywhere else, so you 
might also want to add to the WN config

SpecialWN = true
STARTD_ATTRS = SpecialWN

which causes the WN to advertise that it is a SpecialWN, and then the 
job in Requirement can express that it wants to be limited to that node 
by adding


Requirements = Target.SpecialWN

-greg