Shaping a Sustainable SUNDIALS: Applying Software Sustainability Practices to a CSE Library

Poster presented during the Minisymposterium on Software Productivity and Sustainability for CSE and Data Science at the 2019 SIAM Conference on Computational Science and Engineering. SIAM-CSE19-PP103.Abstract. The SUNDIALS Suite of Nonlinear Differential-Algebraic Solvers and integrators is an open source software library including highly robust and adaptive time integration methods for ODEs and DAEs as well as robust nonlinear solvers. SUNDIALS has a long history of user deployment with over 17,000 downloads worldwide in 2017. Therefore, the sustainability of SUNDIALS is an area of focus for the SUNDIALS team. In this poster, we will discuss specific strategies such as modernizing our CMake build system, increasing test coverage, and increasing modularity within the library. We will also discuss continuing issues and future plans for strengthening SUNDIALS sustainability. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC. LLNL-ABS-755764.