Hello Intel Team,
I wrote a simple "hello world" application to familiarize myself with the Phi. All it does is spit out omp_get_num_threads() inside and outside of an openmp parallel region. I am attempting to control the number and placement of threads as described here: https://software.intel.com/en-us/articles/openmp-thread-affinity-control. For example, I tried
export MIC_ENV_PREFIX=PHI export PHI_KMP_AFFINITY=scatter,verbose export PHI_OMP_NUM_THREADS=60 (or 120, 180, etc)
However, when i run my application using
, the usual "verbose" output does not appear, and the calls to omp_get_num_threads() inevitably return either 1 outside of an OpenMP parallel region or 236 within a parallel region.
My assumption is that I have misunderstood something about how to pass environment variables to the coprocessor. Any ideas?
Much appreciated, Michael
With micnativeloadex, you can pass the environment variables to the remote application with the switch -e. For example, if you want your remote OMP application running with 32 OMP threads:
$ micnativeloadex app.mic -e "OMP_NUM_THREADS=32"
where app.mic is the MIC native application. For more information on usage, type "micnativeloadex -h"