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| Hauptseite > Publikationsdatenbank > Asymptotic convergence of the parallel full approximation scheme in space and time for linear problems > print |
| Hauptseite > Publikationsdatenbank > Asymptotic convergence of the parallel full approximation scheme in space and time for linear problems > print |
| 001 | 857114 | ||
| 005 | 20230310131344.0 | ||
| 024 | 7 | _ | |a 10.1002/nla.2208 |2 doi |
| 024 | 7 | _ | |a 1070-5325 |2 ISSN |
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| 024 | 7 | _ | |a 2128/19998 |2 Handle |
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| 037 | _ | _ | |a FZJ-2018-06359 |
| 082 | _ | _ | |a 510 |
| 100 | 1 | _ | |a Bolten, Matthias |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Asymptotic convergence of the parallel full approximation scheme in space and time for linear problems |
| 260 | _ | _ | |a New York, NY [u.a.] |c 2018 |b Wiley |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a For time‐dependent partial differential equations, parallel‐in‐time integration using the “parallel full approximation scheme in space and time” (PFASST) is a promising way to accelerate existing space‐parallel approaches beyond their scaling limits. Inspired by the classical Parareal method and multigrid ideas, PFASST allows to integrate multiple time steps simultaneously using a space–time hierarchy of spectral deferred correction sweeps. While many use cases and benchmarks exist, a solid and reliable mathematical foundation is still missing. Very recently, however, PFASST for linear problems has been identified as a multigrid method. In this paper, we will use this multigrid formulation and, in particular, PFASST's iteration matrix to show that, in the nonstiff and stiff limit, PFASST indeed is a convergent iterative method. We will provide upper bounds for the spectral radius of the iteration matrix and investigate how PFASST performs for increasing numbers of parallel time steps. Finally, we will demonstrate that the results obtained here indeed relate to actual PFASST runs. |
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| 700 | 1 | _ | |a Moser, Dieter |0 P:(DE-Juel1)157768 |b 1 |
| 700 | 1 | _ | |a Speck, Robert |0 P:(DE-Juel1)132268 |b 2 |e Corresponding author |
| 773 | _ | _ | |a 10.1002/nla.2208 |g Vol. 25, no. 6, p. e2208 - |0 PERI:(DE-600)2012602-5 |n 6 |p e2208 - |t Numerical linear algebra with applications |v 25 |y 2018 |x 1070-5325 |
| 856 | 4 | _ | |y Published on 2018-08-14. Available in OpenAccess from 2019-08-14. |u https://juser.fz-juelich.de/record/857114/files/paper.pdf |
| 856 | 4 | _ | |y Published on 2018-08-14. Available in OpenAccess from 2019-08-14. |x pdfa |u https://juser.fz-juelich.de/record/857114/files/paper.pdf?subformat=pdfa |
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