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Attempts to parallelize SDC Speck, Robert
Description
Spectral deferred corrections (SDC) are an easy way to construct higher-order time integration schemes from simple base integrators, e.g. backward Euler or velocity-Verlet. In addition, their iterative nature makes them an attractive subject for investigating parallelization in time. The most prominent example is the "parallel full approximation scheme in space in time" (PFASST), which couples SDC and multigrid techniques in a clever yet slightly intricate way. While PFASST parallelizes the computation of multiple steps in time, we will focus on the direct, single-step parallelization of SDC iterations themselves. In this talk, we will explore different approaches and show their strengths (if any) as well as their (often severe) limitations. Results of this investigation will turn out to be rather diverse, so this talk is also meant to challenge the community to find better and more robust ways for parallelizing SDC across the method.
Item Metadata
Title |
Attempts to parallelize SDC
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Creator | |
Publisher |
Banff International Research Station for Mathematical Innovation and Discovery
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Date Issued |
2016-12-01T13:01
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Description |
Spectral deferred corrections (SDC) are an easy way to construct
higher-order time integration schemes from simple base integrators,
e.g. backward Euler or velocity-Verlet. In addition, their iterative
nature makes them an attractive subject for investigating
parallelization in time. The most prominent example is the "parallel
full approximation scheme in space in time" (PFASST), which couples
SDC and multigrid techniques in a clever yet slightly intricate
way. While PFASST parallelizes the computation of multiple steps in
time, we will focus on the direct, single-step parallelization of SDC
iterations themselves. In this talk, we will explore different
approaches and show their strengths (if any) as well as their (often
severe) limitations. Results of this investigation will turn out to be
rather diverse, so this talk is also meant to challenge the community
to find better and more robust ways for parallelizing SDC across the
method.
|
Extent |
32 minutes
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Subject | |
Type | |
File Format |
video/mp4
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Language |
eng
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Notes |
Author affiliation: Forschungszentrum Jülich GmbH
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Series | |
Date Available |
2017-05-15
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0347495
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Postdoctoral
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International