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Ryzen 7950x lacks feature sse2 #5122
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Message |
The vanilla code has a 1024-char buffer for CPU features, and I think it's being exceeded here. |
thanks @davidpanderson for looking into it, I've tried your branch, but it didn't help:
|
It will work only when Einstein@home makes this change in their server code. |
In the current version of the code (master branch), p_features size of the host record is still fixed 1024. That doesn't look right (and probably won't help):
https://github.com/BOINC/boinc/blob/master/db/boinc_db_types.h#L369 |
@davidpanderson, I believe this is a valid point. Could you please fix that as well? Thank you in advance |
Describe the bug
Einstein@Home tasks are being rejected with an error
[version] CPU [' family 25 model 97 stepping 2 '] lacks feature ' sse2 '
28.02.2023 17:45:16 | | Processor features: 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 amd_lbr_v2 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 perfmon_v2 ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local avx512_bf16 clzero irperf xsaveerptr rdpru wbnoinvd cppc arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif x2avic v_spec_ctrl avx512vbmi u
as you can see the list is truncated because the internal buffer isn't large enough, but I'm not sure it's the reason for the original error...
cat /proc/cpuinfo
I manually tested cpuid feature check and it also says sse2 IS supported.
Steps To Reproduce
add a project Einstein@Home and enable Multi-Directional Gravitational Wave search on O3 (CPU)
Expected behavior
it doesn't accept work due to a missing feature sse2 which is supported on this CPU (no VMs or hacks are involved). Other boinc projects work just fine.
System Information
OS: Linux desktop-b49ep3v.easy.local 6.2.0-1275.native #1 SMP Wed Feb 22 18:59:06 PST 2023 x86_64 GNU/Linux
Additional context
see related code
https://github.com/BOINC/boinc/blob/master/lib/hostinfo.h#L53
https://github.com/BOINC/boinc/blob/master/client/hostinfo_unix.cpp#L530
https://github.com/BOINC/boinc/blob/master/client/hostinfo_unix.cpp#L683
and the original report https://einsteinathome.org/cs/content/ryzen-7950x-lacks-feature-sse2
let me know if there's more info / logs or tests I can provide. Thanks!
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