Iterative Solver Selection Techniques for Sparse Linear Systems
Kanika Sood
Committee: Boyana Norris (chair), Dejing Dou, Lei Jiao, Elizabeth Jessup, Elizabeth Bohls
Dissertation Defense(May 2019)
Keywords: linear systems, machine learning, lighthouse

Scientific and engineering applications are dominated by linear algebra and depend on scalable solutions of sparse linear systems. For large problems, preconditioned iterative methods are a popular choice. High-performance numerical libraries offer a variety of preconditioned Newton-Krylov methods for solving sparse problems. However, the selection of a well-performing Krylov method remains to be the user's responsibility. This research presents the technique for choosing well-performing parallel sparse linear solver methods, based on the problem characteristics and the amount of communication involved in the Krylov methods.