If installing pygram11 from conda-forge, OpenMP acceleration is
available. If using PyPI or a source release, the
tests to see of OpenMP is available during installation. If you don’t
want to use conda-forge, keep reading.
You can look at the continuous integration configuration files to see how builds are defined (Linux only) to ensure OpenMP acceleration is available. For macOS 10.14, manual tests have shown these setups are OpenMP accelerated:
- Homebrew or pyenv Python3
libompinstalled from Homebrew (Apple LLVM version 10.0.*). This is probably simplest non-conda-forge setup.
- Default (not conda-forge) Anaconda Python3 (3.6.8 and 3.7.3) and
Python2 (2.7.16) distributions with
libompinstalled from Homebrew (you’ll likely need to remove the extra
libiomp5.dylibfrom the Anaconda environment
conda install nomkl, see here).
To check if OpenMP was detected and used while compiling the extension
pygram11._core, try the following:
>>> import pygram11 >>> pygram11.OPENMP True
Needless to say, if you see
False OpenMP acceleration isn’t
The histogramming functions use a named argument (
requesting OpenMP usage. If
omp function argument is ignored.