[slurm-users] number of tasks that can run on a node without oversubscribing

[mercan]

Hi;

If you want to use the threads as cpus, you should set CR_CPU, instead 
of CR_Core.

Regards;

Ahmet M.


12.07.2019 21:29 tarihinde mercan yazdı:
> Hi;
>
> You can find the Definitions of Socket, Core, & Thread at:
>
> https://slurm.schedmd.com/mc_support.html
>
> Your status:
>
> CPUs=COREs=Sockets*CoresPerSocket=1*4=4
>
> Threads=COREs*ThreadsPerCore=4*2=8
>
> Regards;
>
> Ahmet M.
>
>
>
> 12.07.2019 20:15 tarihinde Hanu Pathuri yazdı:
>>
>> Hi,
>>
>> Here is my node information. I am confused with the terminology w.r.t 
>> CPU vs CORE.
>>
>> NodeName=hpathuri-linux CPUs=8 RealMemory=15833 Sockets=1 
>> CoresPerSocket=4 ThreadsPerCore=2 State=UNKNOWN.
>>
>> I am unable to schedule more than 4 tasks without over subscribing 
>> even through my configuration looks like this:
>>
>> SchedulerType=sched/backfill
>>
>> #SchedulerPort=7321
>>
>> SelectType=select/cons_res
>>
>> SelectTypeParameters=CR_Core
>>
>> PreemptMode=suspend,GANG
>>
>> Could help clarify what is going on?
>>
>> I was expecting to schedule 8 tasks.
>>
>> Thanks
>>
>