Setting the Environment Variables for Threading Control

To set the environment variables used for threading control, in the command shell in which the program is going to run, enter the export or setenv commands, depending on the shell you use.

For a bash shell, use the export commands:

export <VARIABLE NAME>=<value>

For example:

export MKL_NUM_THREADS=4

export MKL_DOMAIN_NUM_THREADS="MKL_DOMAIN_ALL=1, MKL_DOMAIN_BLAS=4"

export MKL_DYNAMIC=FALSE

export MKL_NUM_STRIPES=4

For the csh or tcsh shell, use the setenv commands:

setenv <VARIABLE NAME> <value>.

For example:

setenv MKL_NUM_THREADS 4

setenv MKL_DOMAIN_NUM_THREADS "MKL_DOMAIN_ALL=1, MKL_DOMAIN_BLAS=4"

setenv MKL_DYNAMIC FALSE

setenv MKL_NUM_STRIPES 4

For more complete information about compiler optimizations, see our Optimization Notice.