Improved Solver Settings for 3D Exploding Wire Simulations in ALEGRA
Abstract
We are interested in simulating a variety of problems in 3 dimensions featuring large electric currents using the Sandia National Laboratories multiphysics code, ALEGRA. However, many such simulations were prohibitively slow due in part to unoptimized (matrix) solver settings. In this report, we address that by varying 6 parameters in the algebraic multigrid preconditioner, Trilinos/ML, as implemented in ALEGRA. Three parameters impacted performance with one dominating. We provide insight to solver behavior as well as recommended values.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2016
- Accession Number
- AD1015402
Entities
People
- Chris Siefert
- John Niederhaus
- Robert Doney
Organizations
- Sandia National Laboratories
- United States Army Research Laboratory