Sophia Machine Overview

[cms21]

It is unclear from the Sophia Machine Overview page how many hardware threads exist per CPU core on the CPUs on Sophia. This should be clarified.

[felker]

on sophia-gpu-01 from the by-gpu queue:

> cat /proc/cpuinfo
...

processor	: 255
vendor_id	: AuthenticAMD
cpu family	: 23
model		: 49
model name	: AMD EPYC 7742 64-Core Processor
stepping	: 0
microcode	: 0x830107a
cpu MHz		: 2250.000
cache size	: 512 KB
physical id	: 1
siblings	: 128
core id		: 63
cpu cores	: 64
apicid		: 255
initial apicid	: 255
fpu		: yes
fpu_exception	: yes
cpuid level	: 16
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov succor smca sme sev sev_es
bugs		: sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass retbleed smt_rsb srso
bogomips	: 4478.97
TLB size	: 3072 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 43 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate cpb eff_freq_ro [13] [14]

[felker]

in other words, dual socket nodes with SMT2 enabled:

❯ cat /sys/devices/system/cpu/smt/active
1

[felker]

all of the "Hardware Overview" / "Machine Overview" pages could use some standardization and cleaning up anyway; I will take care of it