Pyomo: Accidentally outrunning the bear

Mundt, Miranda Rose; Hart, William Eugene; Johnson, Emma Savannah; Nicholson, Bethany L.; Siirola, John D.

doi:10.1016/j.patter.2025.101311

Pyomo: Accidentally outrunning the bear

Journal Article · Fri Jul 11 00:00:00 EDT 2025 · Patterns

DOI:https://doi.org/10.1016/j.patter.2025.101311· OSTI ID:2585602

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Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Pyomo is an open-source optimization modeling software that has undergone significant evolution since its inception in 2008. Pyomo has evolved to enhance flexibility, solver integration, and community engagement. Modern collaborative tools for open-source software have facilitated the development of new Pyomo functionality and improved our development process through automated testing and performance-tracking pipelines. However, Pyomo faces challenges typical of research software, including resource limitations and knowledge retention. The Pyomo team’s commitment to better development practices and community engagement reflects a proactive approach to these issues. We describe Pyomo’s development journey, highlighting both successes and failures, in the hopes that other open-source research software packages may benefit from our experiences.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003525

OSTI ID:: 2585602

Report Number(s):: SAND--2025-08802J; 1775114

Journal Information:: Patterns, Journal Name: Patterns Journal Issue: 7 Vol. 6; ISSN 2666-3899

Publisher:: Elsevier BVCopyright Statement

Country of Publication:: United States

Language:: English

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