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,
use the appropriate command
in the command shell in which the program is going to run,
for example:
- For the bash shell, enter:export OMP_NUM_THREADS=<number of threads to use>
- For the csh or tcsh shell, enter:setenv OMP_NUM_THREADS<number of threads to use>