Preisträger*innen – UNIVIE Forschungspreise für Studierende 2025/2026
Robert Ernstbrunner
R. Ernstbrunner, W. Gansterer: "Adaptive s-step GMRES with randomized and truncated low-synchronization orthogonalization"
Herzliche Gratulation zur Publikation, die am 39th IEEE International Parallel & Distributed Processing Symposium (IPDPS2025) als Full Paper akzeptiert wurde!
Abstract
Iterative solvers for large, sparse linear systems are widely used on powerful supercomputers. When solving very large problems, communication poses a significant bottleneck, which has prompted the development of communication-avoiding algorithms. We investigate how these algorithms can be combined with novel randomization strategies and introduce a new approach that achieves up to four times the performance of the current state-of-the-art on a modern supercomputer.
