New Time Integrators and Capabilities in SUNDIALS Versions 6.2.0-7.4.0

Files

2506.14976v1.pdf (686.57 KB)

Links to Files

http://arxiv.org/abs/2506.14976

Permanent Link

https://doi.org/10.48550/arXiv.2506.14976
 http://hdl.handle.net/11603/41862

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UMBC Mathematics and Statistics Department
UMBC Faculty Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0002-0911-7841
 https://orcid.org/0000-0003-4013-9907

Date

2025-06-17

Type of Work

journal articles
preprints
Text

Department

Program

Citation of Original Publication

Rights

This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain

Subjects

Computer Science - Mathematical Software
UMBC High Performance Computing Facility (HPCF)

Abstract

SUNDIALS is a well-established numerical library that provides robust and efficient time integrators and nonlinear solvers. This paper overviews several significant improvements and new features added over the last three years to support scientific simulations run on high-performance computing systems. Notably, three new classes of one-step methods have been implemented: low storage Runge-Kutta, symplectic partitioned Runge-Kutta, and operator splitting. In addition, we describe new time step adaptivity support for multirate methods, adjoint sensitivity analysis capabilities for explicit Runge-Kutta methods, additional options for Anderson acceleration in nonlinear solvers, and improved error handling and logging.