[ET Trac] #2581: Vectors test fails on AMD Ryzen 9 4900HS

[Zach Etienne]

#2581: Vectors test fails on AMD Ryzen 9 4900HS

 Reporter: Zach Etienne
   Status: new
Milestone: 
  Version: development version
     Type: bug
 Priority: major
Component: EinsteinToolkit thorn

Vectors, after correctly finding that CCTK\_REAL\_VEC\_SIZE is in fact 4 on this CPU, with flags:

```
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 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 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 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
```

segfaults on the vec\_loadu\_maybe\[1\] test in Vectors.

```
INFO (Vectors): Testing vectorisation... [errors may result in segfaults]
INFO (VecINFO (Vectors): Testing vectorisation... [errors may result in segfaults]
INFO (Vectors): Test vec_set1...
INFO (Vectors): Test vec_set...
INFO (Vectors): Test vec_elt[0]...
INFO (Vectors): Test vec_elt[1]...
INFO (Vectors): Test vec_elt[2]...
INFO (Vectors): Test vec_elt[3]...
INFO (Vectors): Test vec_load...
INFO (Vectors): Test vec_loadu[0]...
INFO (Vectors): Test vec_loadu[1]...
INFO (Vectors): Test vec_loadu[2]...
INFO (Vectors): Test vec_loadu[3]...
INFO (Vectors): Test vec_loadu_maybe[0]...
INFO (Vectors): Test vec_loadu_maybe[1]...
Rank 0 with PID 218092 received signal 11
```

After commenting out this test, the test suite runs with no problems.

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2581/vectors-test-fails-on-amd-ryzen-9-4900hs
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