[Octave-bug-tracker] [bug #51643] setting OMP_NUM_THREADS at runtime does not chaneg number of openmp threads

[John W. Eaton]

Follow-up Comment #2, bug #51643 (project octave):

I suspect that there was a misunderstanding at some point about how this
environment variable works.  So instead of checking the value each time an
OMP-enabled function is called, it is only checked once to set some global
variable to specify the thread limit?

I hesitate to intercept and do special things for specific variables in
Octave's putenv function.

Maybe we should document that the initial value of the number of threads may
be set from the environment and also offer a separate function to set the
thread limit for OMP?


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