A simple strategy for varying the restart parameter in GMRES(m)
Journal Article
·
· Journal of Computational and Applied Mathematics
OSTI ID:957186
When solving a system of linear equations with the restarted GMRES method, a fixed restart parameter is typically chosen. We present numerical experiments that demonstrate the beneficial effects of changing the value of the restart parameter in each restart cycle on the total time to solution. We propose a simple strategy for varying the restart parameter and provide some heuristic explanations for its effectiveness based on analysis of the symmetric case.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 957186
- Report Number(s):
- UCRL-JRNL-235266; JCAMDI; TRN: US201007%%606
- Journal Information:
- Journal of Computational and Applied Mathematics, Vol. 230; ISSN 0377-0427
- Country of Publication:
- United States
- Language:
- English
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