ODE System Solver W. Krylov Iteration & Rootfinding

Software · Mon Sep 09 00:00:00 EDT 1991

DOI:https://doi.org/10.11578/dc.20180615.11· OSTI ID:1230135 · Code ID:12080

Hindmarsh, Alan

LSODKR is a new initial value ODE solver for stiff and nonstiff systems. It is a variant of the LSODPK and LSODE solvers, intended mainly for large stiff systems. The main differences between LSODKR and LSODE are the following: (a) for stiff systems, LSODKR uses a corrector iteration composed of Newton iteration and one of four preconditioned Krylov subspace iteration methods. The user must supply routines for the preconditioning operations, (b) Within the corrector iteration, LSODKR does automatic switching between functional (fixpoint) iteration and modified Newton iteration, (c) LSODKR includes the ability to find roots of given functions of the solution during the integration.

• Short Name / Acronym: LSODKR
• Project Type: Closed Source
• Site Accession Number: 1045
• Software Type: Scientific
• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: DOE/ER

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  Primary Award/Contract Number:

  W-7405-ENG-48
• DOE Contract Number: W-7405-ENG-48
• Code ID: 12080
• OSTI ID: 1230135
• Country of Origin: United States