codepaths/openmp_simd, sse2

Thanks for the info, but that’s not exactly what I was looking for – I know what SIMD is.
Any practical suggestions on those two options? Turn them both on, and they may help in certain cases? Or should OpenMP left at the default ‘false’ value? Should I have seen some difference in my experiments?

My build info, according to darktable --version:
this is darktable 3.9.0+74~gff44aa88e
copyright (c) 2009-2022 johannes hanika
darktable-dev@lists.darktable.org

compile options:
  bit depth is 64 bit
  normal build
  SSE2 optimized codepath enabled
  OpenMP support enabled
  OpenCL support enabled
  Lua support enabled, API version 8.0.0
  Colord support enabled
  gPhoto2 support enabled
  GraphicsMagick support enabled
  ImageMagick support disabled
  OpenEXR support enabled

I build with ./build.sh --prefix /home/kofa/darktable-master --build-type Release --install.