Stabilizing randomized GMRES through flexible GMRES
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913103203008512 |
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| author | Güttel, Stefan Pearson, John W. |
| author_facet | Güttel, Stefan Pearson, John W. |
| contents | We explore the use of flexible GMRES as an outer wrapper for sketched GMRES. Building on a new bound for the residual of FGMRES in terms of the residual of the preconditioner, we derive a practical randomized solver that requires very little parameter tuning, while still being efficient and robust in the sense of generating non-increasing residual norms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_18408 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Stabilizing randomized GMRES through flexible GMRES Güttel, Stefan Pearson, John W. Numerical Analysis We explore the use of flexible GMRES as an outer wrapper for sketched GMRES. Building on a new bound for the residual of FGMRES in terms of the residual of the preconditioner, we derive a practical randomized solver that requires very little parameter tuning, while still being efficient and robust in the sense of generating non-increasing residual norms. |
| title | Stabilizing randomized GMRES through flexible GMRES |
| topic | Numerical Analysis |
| url | https://arxiv.org/abs/2506.18408 |