• epyc

    From Maurice Kinal@1:153/7001.53423 to Benny Pedersen on Friday, August 04, 2023 21:29:49
    Hey Benny!

    This is a zen1 cpu and not zen2 as earlier reported. It works for me. :-)

    :r !lscpu
    Architecture: x86_64
    CPU op-mode(s): 32-bit, 64-bit
    Address sizes: 48 bits physical, 48 bits virtual
    Byte Order: Little Endian
    CPU(s): 16
    On-line CPU(s) list: 0-15
    Vendor ID: AuthenticAMD
    Model name: AMD EPYC 3251 8-Core Processor
    CPU family: 23
    Model: 1
    Thread(s) per core: 2
    Core(s) per socket: 8
    Socket(s): 1
    Stepping: 2
    Frequency boost: enabled
    CPU(s) scaling MHz: 48%
    CPU max MHz: 2500.0000
    CPU min MHz: 1200.0000
    BogoMIPS: 5000.26
    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 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca
    Virtualization: AMD-V
    L1d cache: 256 KiB (8 instances)
    L1i cache: 512 KiB (8 instances)
    L2 cache: 4 MiB (8 instances)
    L3 cache: 16 MiB (2 instances)
    NUMA node(s): 1
    NUMA node0 CPU(s): 0-15
    Vulnerability Itlb multihit: Not affected
    Vulnerability L1tf: Not affected
    Vulnerability Mds: Not affected
    Vulnerability Meltdown: Not affected
    Vulnerability Mmio stale data: Not affected
    Vulnerability Retbleed: Mitigation; untrained return thunk; SMT vulnerable
    Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
    Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
    Vulnerability Spectre v2: Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling, PBRSB-eIBRS Not affected
    Vulnerability Srbds: Not affected
    Vulnerability Tsx async abort: Not affected

    :r !uname -a
    Linux amiitoo 6.4.8 #1 SMP PREEMPT_DYNAMIC Fri Aug 4 15:16:29 UTC 2023 x86_64 GNU/Linux

    Note that it reports x86_64 which is the same for the Ryzens (and Intels) as I've been optimizing for that. This kernel can boot on any machine here. I think this is better output;

    :r /proc/version
    Linux version 6.4.8 (root@amiitoo) (gcc (GCC) 13.2.0, GNU ld (GNU Binutils) 2.41) #1 SMP PREEMPT_DYNAMIC Fri Aug 4 15:16:29 UTC 2023

    Life is good,
    Maurice

    o- -o -o o- o- -o -o o- -o o- o- -o o- -o o- o- /) (\ (\ /) /) (\ (\ /) (\ /) /) (\ /) (\ /) /) ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ... Fidonet Unplugged - One in a million.
    --- GNU bash, version 5.2.15(1)-release (x86_64-pc-linux-gnu)
    * Origin: One of us @ (1:153/7001.53423)