Hi Adrian, On Tue, Aug 16, 2016 at 08:11:41AM -0700, Adrian Sevcenco wrote:
> > Hi! I have trouble understanding the definition of job slots for each node ... > and i am running slurm only on my desktop to get used to it until i move it > to the clusters .. it is not clear to me how one can define the job slots for > each node and how it can be automatically done for a list of nodes > (i hope that there is not a requirement of human input of hardware resources > for each node) > > I have defined > TaskPluginParam=Cores > SelectType=select/cons_res > SelectTypeParameters=CR_CPU > > and > > PartitionName=local Nodes=localhost Default=YES MaxTime=172800 State=UP > > but in the logs i have this: > NodeName=localhost CPUs=8 > Aug 16 17:45:39 sev.spacescience.ro slurmd[7373]: CPUs=8 Boards=1 Sockets=8 > Cores=1 Threads=1 Memory=16006 TmpDisk=255791 Uptime=1313157 > CPUSpecList=(null) FeaturesAvail=(null) FeaturesActive=(null) ^^^^ Your configuration is stating that it is an 8-socket machine, where each socket has one cpu core. > Aug 16 17:45:39 sev.spacescience.ro slurmd[7371]: Node configuration differs > from hardware: CPUs=8:8(hw) Boards=1:1(hw) SocketsPerBoard=8:1(hw) > CoresPerSocket=1:4(hw) ThreadsPerCore=1:2(hw) ^^^^ ..whereas slurm has detected 1 socket with 4 cores, and each core has 2 hyperthreads. You should define the node as follows: NodeName=localhost Sockets=1 CoresPerSocket=4 ThreadsPerCore=2 > how can i define for my machine to run 8 jobs? > also, for the next level, how can i set a job slot for each physical core (a > job to run on the physical core + its ht partner)? I don't quite understand what you're looking for here. You can probably use some sbatch parameters to define what the job needs (e.g. --threads-per-core=2) in an allocation. Hope that helps. Paddy
