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PySM 3

PySM generates full-sky simulations of Galactic emissions in intensity and polarization relevant to CMB experiments. It is a large refactor of PySM 2 <https://github.com/bthorne93/PySM_public>__ focused on reducing memory usage, improving performance and run in parallel with MPI.

See the documentation at https://pysm3.readthedocs.io

See changes in CHANGES.rst in the repository.

Related scientific papers

See CITATION <https://github.com/galsci/pysm/blob/main/CITATION>_

• The Python Sky Model 3 software (Zonca et al, 2021) <https://arxiv.org/abs/2108.01444>_
• The Python Sky Model: software for simulating the Galactic microwave sky (Thorne et al, 2017) <https://arxiv.org/abs/1608.02841>_

Install

See the documentation <https://pysm3.readthedocs.io/en/latest/#installation>_

• Install with pip install . or with pip install .[test] to also install the requirements for running tests
• Optionally, if you have an MPI environment available and you would like to test the MPI capabilities of PySM, install mpi4py and libsharp, check the documentation link above for more details.
• Check code style with tox -e codestyle
• Test with pytest or tox -e test
• Building docs requires pandoc, not the python package, the actual pandoc command line tool, install it with conda or your package manager
• Build docs locally with tox -e build_docs

Support

For any question or issue with the software open an issue <https://github.com/galsci/pysm/issues/>_.

Release

• Tag the new version with git
• pip install build --upgrade
• python -m build --sdist --wheel .
• twine upload dist/*

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