Dear all, where can I tell Slurm what core numbers belong to the same physical core?
The physical cores on our KNL are 0-63, followed by hyperthreads 64-255. cat /sys/devices/system/cpu/cpu0/topology/thread_siblings_list 0,64,128,192 When I ask for 4 cores with "srun --pty -c 4 -p knl bash" I see: taurusknl1 /home/mark taskset -pc $$ pid 285662's current affinity list: 0,64,128,192 but these are not 4 cores but only one core! It looks like Slurm does not recognize the numbering scheme for the cores on the node. Where can I specify this? Thank you, Ulf "scontrol show node " says: CoreSpecCount=1 CPUSpecList=252-255 this, again, are 4 threads on 4 different cores! This is my node entry for this guy: NodeName=taurusknl[1] Sockets=1 CoresPerSocket=64 ThreadsPerCore=4 State=UNKNOWN RealMemory=94000 Weight=64 CoreSpecCount=1 -- ___________________________________________________________________ Dr. Ulf Markwardt Technische Universität Dresden Center for Information Services and High Performance Computing (ZIH) 01062 Dresden, Germany Phone: (+49) 351/463-33640 WWW: http://www.tu-dresden.de/zih
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