How to disable OpenMP support in graph-tool

Question

I want to disable OpenMP in graph-tool, but I can't find anything about OpenMP in graph-tool's official documentation.

Is there any way to turn it off?

Answer 1

There are several ways. During compilation you can pass the option --disable-openmp to the configure script.

If you just want to disable openmp during runtime you can either:

1. Set the environment variable OMP_NUM_THREADS=1
2. Call the graph-tool function openmp_set_num_threads(1)