Just run test.py!

OpenMP as implemented is really slow (200x slower) than without probably due to thread contention. Do not use OpenMP as implemented!

Running (release mode)

python3 -O imgsample.py
python3 -O test_add_array_f.py
python3 -O test_add_array_i.py

Running (debug mode)

python3 imgsample.py
python3 test_add_array_f.py
python3 test_add_array_i.py

--without-multilib is mandatory for building with OpenMP support https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60670

brew reinstall gcc --without-multilib
USE_OPENMP=true CC=gcc-5 python3 -O test_add_array_f.py
USE_OPENMP=true CC=gcc-5 python3 -O test_add_array_i.py