Barry Smith <bsm...@petsc.dev> writes: >> We could test at runtime whether child threads exist/are created when >> calling BLAS and deliver a warning. > > How does one test for this? Some standard Unix API for checking this?
I'm not sure, the ids of child threads are in /proc/$pid/task/ and (when opened by a process) /proc/self/task/. See man procfs for details.
