Hi Hugo.

i[3-9] have 2 kinds of cores: the more performant ones with hyperthreading and the slower ones without.

From https://www.intel.com/content/www/us/en/products/docs/processors/core/core-1... : -8<-- These processors feature performance hybrid architecture1, combining two core microarchitectures on a single processor die. This architecture features Performance-cores, Efficient-cores and Intel® Thread Director2. With up to 24 cores (8 Performance-cores and 16 Efficient-cores) and up to 32 threads. -8<-- (similar to what's written in the page for 12th gen i9).

How to handle these strange beasts in Slurm is another issue and I have no idea... We're only using Xeons (and AMDs) that have omogeneous cores.

Diego

Il 17/02/2025 04:41, Hugo Solís via slurm-users ha scritto:

I am installing slurm on a small cluster of 3 identical computers at the university.

It turns out that I get the message when starting:

error: NodeNames=hugo-big-1 CPUs=24 match no Sockets, Sockets*CoresPerSocket or Sockets*CoresPerSocket*ThreadsPerCore. Resetting CPUs.

error: NodeNames=hugo-big-2 CPUs=24 match no Sockets, Sockets*CoresPerSocket or Sockets*CoresPerSocket*ThreadsPerCore. Resetting CPUs.

error: NodeNames=hugo-big-3 CPUs=24 match no Sockets, Sockets*CoresPerSocket or Sockets*CoresPerSocket*ThreadsPerCore. Resetting CPUs.

if I run

sudo slurmd -C

I get

NodeName=hugo-big-1 CPUs=24 Boards=1 SocketsPerBoard=1 CoresPerSocket=16 ThreadsPerCore=1 RealMemory=128586

reading many post it seems there is a bug starting in version 18. However I had modify the slurm.conf file

NodeName=hugo-big-1 CPUs=24 Boards=1 SocketsPerBoard=1 CoresPerSocket=16 ThreadsPerCore=1 RealMemory=128586 Gres=gpu:nvidia_geforce_rtx_3090:2

to several different version where I do not specify CPUs or sockets and I failed everytime.

I do need help, any idea?

warm regards

Hugo Solis

BTW. if I run lscpu I got that any product of Thread, cores or sockets do not result in 24.

Architecture:             x86_64   CPU op-mode(s):         32-bit, 64-bit   Address sizes:          46 bits physical, 48 bits virtual   Byte Order:             Little Endian CPU(s):                   24   On-line CPU(s) list:    0-23 Vendor ID:                GenuineIntel   Model name:             12th Gen Intel(R) Core(TM) i9-12900K     CPU family:           6     Model:                151     Thread(s) per core:   2     Core(s) per socket:   16     Socket(s):            1     Stepping:             2     CPU max MHz:          5200.0000     CPU min MHz:          800.0000     BogoMIPS:             6374.40     Flags:                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good                            nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_ti                           mer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault cat_l2 cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2                            erms invpcid rdt_a rdseed adx smap clflushopt clwb intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves split_lock_detect user_shstk avx_vnni dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_e                           pp hwp_pkg_req hfi vnmi umip pku ospke waitpkg gfni vaes vpclmulqdq tme rdpid movdiri movdir64b fsrm md_clear serialize pconfig arch_lbr ibt flush_l1d arch_capabilities Virtualization features:   Virtualization:         VT-x Caches (sum of all):   L1d:                    640 KiB (16 instances)   L1i:                    768 KiB (16 instances)   L2:                     14 MiB (10 instances)   L3:                     30 MiB (1 instance) NUMA:   NUMA node(s):           1   NUMA node0 CPU(s):      0-23