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IAS Seminar "A multigrid perspective on the parallel full approximation scheme in space and time"

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09 Nov 2017 13:30
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09 Nov 2017 14:30
venue
Jülich Supercomputing Centre, Besprechungsraum 1, building 16.3, room 350
Speaker:
Dieter Moser, Institut für Geometrie und Praktische Mathematik, RWTH Aachen University
Abstract:
With the anticipated need for more than 100 million-way concurrency on emerging exascale HPC systems, interest in enhancing the strong-scalings limits of space-parallelism by parallelization of the time dimension is rapidly increasing. As a well-known time-parallelization method with a high modularity the ’parallel full approximation scheme in space and time’ (PFASST), is an excellent candidate for adaption to a variety of engineering and computational science problems. In this talk a mathematical foundation will be introduced for PFASST, consisting of a multigrid formulation and a customized Local Fourier Analysis. Then, a class of suitable problems is outlined, for which the mathematical foundation yields strategies to analyze and optimize the parallel efficiency and convergence rate of PFASST.
Date:
Thursday, 9 November 2017, 13:30
Venue:
Jülich Supercomputing Centre, Besprechungsraum 1, building 16.3, room 350
Announcement as pdf file:
 A multigrid perspective on the parallel full approximation scheme in space and time (PDF, 29 kB)

Anyone interested is cordially invited to participate in this seminar.
Contact: Robert Speck, JSC