tool · inferred from evidence
lscpu
A command-line tool to check CPU flags (e.g., avx, avx2, avx512).
- Elasticsearch crashes (SIGILL in libvec.so) on kNN search when the VM/hypervisor hides AVX flags
Check that AVX2/AVX-512 is actually exposed at every layer: bare metal, hypervisor/VM, and container (`lscpu` flags inside the container must show avx/avx2/avx512). If your hypervisor hides those flags, either enable them in the hypervisor/