Known Issues

Crash on Linux x64

The OpenBLAS library may fail to correctly identify certain AMD CPUs. This will lead to a crash due to the execution of unsupported AVX-512 instructions. The issue can be resolved by manually setting the OPENBLAS_CORETYPE environment variable before loading the Krisp SDK.

Fix

Run one of the following commands, depending on your AMD Zen CPU generation:

AMD Zen 1st Generation

export OPENBLAS_CORETYPE=HASWELL

AMD Zen 2nd-3rd Generation

export OPENBLAS_CORETYPE=ZEN

AMD Zen 4th Generation

export OPENBLAS_CORETYPE=SKYLAKEX

Reference

https://github.com/OpenMathLib/OpenBLAS/blob/v0.3.29/README.md

Increased CPU Consumption

The SDK creates a thread pool by default. While this may slightly improve audio frame processing time, it can lead to significant CPU overhead, especially in multi-process setups where each process spawns its own thread pool.

Fix

Set this before loading the Krisp SDK to ensure single-threaded execution:

export OPENBLAS_NUM_THREADS=1

Notes

Single-threaded execution will be the default in the next Server SDK release.