Cardinal

System Downtime August 11 2026

A downtime for OSC HPC systems is scheduled from 7 a.m. to 9 p.m., Tuesday, August 11, 2026. The downtime will affect the Pitzer, Cardinal and Ascend Clusters, web portals, the state-wide licenses and HPC file servers. MyOSC (the client portal) will be available during the downtime. In preparation for the downtime, the batch scheduler will not start jobs that cannot be completed before 7 a.m., August 11. Jobs that are not started on clusters will be held until after the downtime and then started once the system is returned to production status.

HOWTO: Use uv for Python at OSC

uv is a fast Python package and virtual environment manager developed by Astral. It provides functionality provided by both venv and pip, but is significantly faster at dependency resolution. Some users who do not need Conda packages or cross-language support in their project may prefer to use uv for its speed. Because uv is still under active development and its behavior may change between frequent releases, OSC does not currently provide it as a centrally managed software package.

HEASoft

A Unified Release of the FTOOLS and XANADU Software Packages. XANADU: High-level, multi-mission tasks for X-ray astronomical spectral, timing, and imaging data analysis. FTOOLS: General and mission-specific tools to manipulate FITS files. FITSIO: Core library responsible for reading and writing FITS files. fv: General FITS file browser/editor/plotter with a graphical user interface. XSTAR: Tool for calculating the physical conditions and emission spectra of photoionized gases

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