On Wed, Jun 29, 2022 at 3:54 AM Mikhail Kuzminsky <k...@free.net> wrote: > Yes, RHEL requires upgrading to 8.3 or later to work with EPYC 7003 > https://access.redhat.com/articles/5899941. Officially CentOS 7 > doesn't support this hardware either.
And yet, Red Hat silently backports Milan-specific bits to 7.9 kernels, like: - Rudimentary support for AMD Milan - Call init_amd_zn() om Family 19h processors (BZ#2019218) in kernel-3.10.0-1160.53.1 (https://access.redhat.com/errata/RHSA-2022:0063) So yes, in practice, el7 distributions run perfectly fine on Milan CPUs. You won't have complete support for things like EDAC, but as far as booting and running the kernel, it works fine: # uname -r 3.10.0-1160.53.1.el7.x86_64 # lscpu -y Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 32 On-line CPU(s) list: 0-31 Thread(s) per core: 1 Core(s) per socket: 32 Socket(s): 1 NUMA node(s): 2 Vendor ID: AuthenticAMD CPU family: 25 Model: 1 Model name: AMD EPYC 7543 32-Core Processor Stepping: 1 CPU MHz: 2794.847 BogoMIPS: 5589.69 Virtualization: AMD-V L1d cache: 32K L1i cache: 32K L2 cache: 512K L3 cache: 32768K NUMA node0 CPU(s): 0-15 NUMA node1 CPU(s): 16-31 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 art rep_good nopl nonstop_tsc extd_apicid aperfmperf eagerfpu pni pclmulqdq monitor ssse3 fma cx16 pcid 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_l2 cpb cat_l3 cdp_l3 invpcid_single hw_pstate sme retpoline_amd ssbd ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq overflow_recov succor smca Cheers, -- Kilian _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit https://beowulf.org/cgi-bin/mailman/listinfo/beowulf
