Setting the Number of Threads Using an OpenMP* Environment Variable
You can set the number of threads using the environment variable
OMP_NUM_THREADS
. To change the number of OpenMP threads,
in the command shell in which the program is going to run,
enter:
set OMP_NUM_THREADS=
.
<number of threads to use>
Some shells require the variable and its value to be exported:
export OMP_NUM_THREADS=
.
<number of threads to use>
You can alternatively assign value to the environment variable using Microsoft Windows*
OS Control Panel.
Note that you will not benefit from setting this variable on Microsoft Windows* 98 or
Windows* ME because multiprocessing is not supported.