omp_set_nested routine deprecated
When building VTK with LLVM 13 and OpenMP support, you get a ton (thousands, millions, ???) of warnings on the terminal when running filters that use SMP:
OMP: Info #273: omp_set_nested routine deprecated, please use omp_set_max_active_levels instead.
omp_set_nested
is marked as deprecated in OpenMP 5.1, but not in 5.0, ref: https://www.openmp.org/wp-content/uploads/OpenMP-API-Specification-5-1.pdf
It is possible to silence these warnings with the environment variable KMP_WARNINGS="off"
, but that is not a viable long-term solution.