Re: [HTCondor-users] Problem in running parallel program

[Carsten Aulbert <carsten.aulbert@xxxxxxxxxx>]

Hi

On 22.09.21 14:35, Rajagopala Reddy Seelam wrote:
> Response to this email: No, I think "dagman" may not help me here. This 
> has to do with the "request_cpus=1". HTCondor accepts jobs upto 20 and 
> immediately runs these 20 calculations. As a result, the memory is 
> exhausted and the machine hangs. I am looking to the "hold" possibility 
> to manually specify the scheduler to hold the job and release the job 
> after the earlier job is completed.


I think the partition-able slot will help here as well as you can also 
can simply use

request_memory = 6G
request_cpus = 5

and if the machine has 20 cores and 16 GByte of RAM, it would only ever 
run two of
these at the same time as condor only as 4 GByte and 10 CPU cores left 
for a new job.

There are many more knobs to try to achieve this, but these would be the 
ones I would
try first.

Cheers

Carsten

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