[Numpy-discussion] Set #threads from within python code
oleksandr.pavlyk at intel.com
Fri Mar 24 15:42:54 EDT 2017
Rather than keeping the number of threads MKL uses to 1, it is better to use MKL_THREADING_LAYER=SEQUENTIAL
From: NumPy-Discussion [mailto:numpy-discussion-bounces+oleksandr.pavlyk=intel.com at python.org] On Behalf Of Neal Becker
Sent: Friday, March 24, 2017 6:31 AM
To: numpy-discussion at python.org
Subject: [Numpy-discussion] Set #threads from within python code
I don't want my python code to run multi-thread. So I can do:
MKL_NUM_THREAD=1 NUMEXPR_NUM_THREADS=1 OMP_NUM_THREADS=1 my_program...
But I don't seem to be able to achieve this effect without setting env
variables on the command line; within my_program. Using os.environ doesn't
work. I don't understand why. I'd like to not have to put this on the
command line because I sometimes forget.
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