[slurm-users] Slurm configuration, Weight Parameter

[Sistemas NLHPC]

Hi Renfro

I am testing this configuration, test configuration and as clean as
possible:

====

NodeName=devcn050 RealMemory=3007 Features=3007MB Weight=200 State=idle
Sockets=2 CoresPerSocket=1
NodeName=devcn002 RealMemory=3007 Features=3007MB Weight=1 State=idle
Sockets=2 CoresPerSocket=1
NodeName=devcn001 RealMemory=2000 Features=2000MB Weight=500 State=idle
Sockets=2 CoresPerSocket=1

PartitionName=slims Nodes=devcn001,devcn002,devcn050 Default=yes Shared=yes
State=up

===

In your config is necessary one plugin extra or parameter for option
Weight?

The configuration does not work as expected.

Regards,

El sáb., 30 nov. 2019 a las 10:30, Renfro, Michael (<Renfro at tntech.edu>)
escribió:

> We’ve been using that weighting scheme for a year or so, and it works as
> expected. Not sure how Slurm would react to multiple NodeName=DEFAULT lines
> like you have, but here’s our node settings and a subset of our partition
> settings.
>
> In our environment, we’d often have lots of idle cores on GPU nodes, since
> those jobs tend to be GPU-bound rather than CPU-bound. So in one of our
> interactive partitions, we let non-GPU jobs take up to 12 cores of a GPU
> node. Additionally, we have three memory configurations in our main batch
> partition. We want to bias jobs to running on the smaller-memory nodes by
> default. And the same principle applies to our GPU partition, where the
> smaller-memory GPU nodes get jobs before the larger-memory GPU node.
>
> =====
>
> NodeName=gpunode[001-003]  CoresPerSocket=14 RealMemory=382000 Sockets=2
> ThreadsPerCore=1 Weight=10011 Gres=gpu:2
> NodeName=gpunode004  CoresPerSocket=14 RealMemory=894000 Sockets=2
> ThreadsPerCore=1 Weight=10021 Gres=gpu:2
> NodeName=node[001-022]  CoresPerSocket=14 RealMemory=62000 Sockets=2
> ThreadsPerCore=1 Weight=10201
> NodeName=node[023-034]  CoresPerSocket=14 RealMemory=126000 Sockets=2
> ThreadsPerCore=1 Weight=10211
> NodeName=node[035-040]  CoresPerSocket=14 RealMemory=254000 Sockets=2
> ThreadsPerCore=1 Weight=10221
>
> PartitionName=any-interactive Default=NO MinNodes=1 MaxNodes=4
> MaxTime=02:00:00 AllowGroups=ALL PriorityJobFactor=3 PriorityTier=1
> DisableRootJobs=NO RootOnly=NO Hidden=NO Shared=NO GraceTime=0
> PreemptMode=OFF ReqResv=NO DefMemPerCPU=2000 AllowAccounts=ALL AllowQos=ALL
> LLN=NO MaxCPUsPerNode=12 ExclusiveUser=NO OverSubscribe=NO OverTimeLimit=0
> State=UP Nodes=node[001-040],gpunode[001-004]
>
> PartitionName=batch Default=YES MinNodes=1 MaxNodes=40
> DefaultTime=1-00:00:00 MaxTime=30-00:00:00 AllowGroups=ALL
> PriorityJobFactor=1 PriorityTier=1 DisableRootJobs=NO RootOnly=NO Hidden=NO
> Shared=NO GraceTime=0 PreemptMode=OFF ReqResv=NO DefMemPerCPU=2000
> AllowAccounts=ALL AllowQos=ALL LLN=NO ExclusiveUser=NO OverSubscribe=NO
> OverTimeLimit=0 State=UP Nodes=node[001-040]
>
> PartitionName=gpu Default=NO MinNodes=1 DefaultTime=1-00:00:00
> MaxTime=30-00:00:00 AllowGroups=ALL PriorityJobFactor=1 PriorityTier=1
> DisableRootJobs=NO RootOnly=NO Hidden=NO Shared=NO GraceTime=0
> PreemptMode=OFF ReqResv=NO DefMemPerCPU=2000 AllowAccounts=ALL AllowQos=ALL
> LLN=NO MaxCPUsPerNode=16 QoS=gpu ExclusiveUser=NO OverSubscribe=NO
> OverTimeLimit=0 State=UP Nodes=gpunode[001-004]
>
> =====
>
> > On Nov 29, 2019, at 8:09 AM, Sistemas NLHPC <sistemas at nlhpc.cl> wrote:
> >
> > External Email Warning
> > This email originated from outside the university. Please use caution
> when opening attachments, clicking links, or responding to requests.
> > Hi All,
> >
> > Thanks all for your posts
> >
> > Reading the documentation of Slurm and other sites like Niflheim
> https://wiki.fysik.dtu.dk/niflheim/Slurm_configuration#node-weight (Ole
> Holm Nielsen) the parameter "Weight" is to assign a value to the nodes,
> with this you can have priority in the nodes. But I have not obtained
> positive results.
> >
> > Thanks in advance
> >
> > Regards
> >
> > El sáb., 23 nov. 2019 a las 14:18, Chris Samuel (<chris at csamuel.org>)
> escribió:
> > On 23/11/19 9:14 am, Chris Samuel wrote:
> >
> > > My gut instinct (and I've never tried this) is to make the 3GB nodes
> be
> > > in a separate partition that is guarded by AllowQos=3GB and have a QOS
> > > called "3GB" that uses MinTRESPerJob to require jobs to ask for more
> > > than 2GB of RAM to be allowed into the QOS.
> >
> > Of course there's nothing to stop a user requesting more memory than
> > they need to get access to these nodes, but that's a social issue not a
> > technical one. :-)
> >
> > --
> >   Chris Samuel  :  http://www.csamuel.org/  :  Berkeley, CA, USA
> >
>
>
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