Re: [Condor-users] "condor_suspend"

[Dan Bradley <dan@xxxxxxxxxxxx>]

Preston,

I like your idea.  I can't think of any reason why it wouldn't work.

I also happen to have wanted this feature, and since I was messing 
around with Condor's COD feature at the time, I implemented it using 
COD.  (COD stands for "Computing On Demand" because it gives an 
application quick access to a node, suspending whatever other job is 
running there.  The use of it purely for suspension purposes is more 
like "Computing Off Demand".)

Here's my script, in case it is helpful to you:

/afs/hep.wisc.edu/cms/cmsprod/bin/emergency_suspend

To make it work, you would need to configure VALID_COD_USERS and you 
would need to enable some method of user authentication (e.g. add a 
grid-mapfile).  If you haven't already got that, it might be simpler to 
go with your idea and use condor_config_val, which relies on the 
administrative authorization settings instead.

--Dan

Preston Smith wrote:

> I'd like to be able to run a command on a node to suspend all the  
> jobs on it, much like when I run condor_vacate to get them all out.  
> I'll call it "condor_suspend" since that doesn't seem to exist.
>
> My first idea on how to do this is to change SUSPEND:
>
> SUSPEND = ( $(KeyboardBusy) || \
>                  ( (CpuBusyTime > 2 * $(MINUTE)) \
>                    && $(ActivationTimer) > 90 ) ) || SuspendMeNow ==  
> TRUE
>
> and then something in the reverse for CONTINUE.
>
> My script could then twiddle SuspendMeNow with condor_config_val.
>
> Has anybody else done this before and is willing to share?  :)
> Is there a smarter way?
>
> -Preston
>
> --
> Preston Smith    <psmith@xxxxxxxxxx>
> Systems Research Engineer
> Rosen Center for Advanced Computing, Purdue University
>
>
>
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