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SCHEDULE: NOV 16-21, 2014
When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.
Performance of Block Jacobi-Davidson Eigensolvers
SESSION: Poster Reception
EVENT TYPE: Posters
TIME: 5:15PM - 7:00PM
AUTHOR(S):Melven Roehrig-Zoellner, Jonas Thies, Moritz Kreutzer, Andreas Alvermann, Andreas Pieper, Achim Basermann, Georg Hager, Gerhard Wellein, Holger Fehske
ROOM:New Orleans Theater Lobby
ABSTRACT:
Jacobi-Davidson methods can efficiently compute a few eigenpairs of a large sparse matrix.
Block variants of Jacobi-Davidson are known to be more robust than the standard algorithm, but they are usually avoided as the total number of floating point operations increases.
We present the implementation of a block Jacobi-Davidson solver and show by detailed performance engineering and numerical experiments that the increase in operations is typically more than compensated by performance gains on modern architectures, giving a method that is both more efficient and robust than its single vector counterpart.
Chair/Author Details:
Melven Roehrig-Zoellner - German Aerospace Center
Jonas Thies - German Aerospace Center
Moritz Kreutzer - Erlangen Regional Computing Center
Andreas Alvermann - University of Greifswald
Andreas Pieper - University of Greifswald
Achim Basermann - German Aerospace Center
Georg Hager - Erlangen Regional Computing Center
Gerhard Wellein - Erlangen Regional Computing Center
Holger Fehske - University of Greifswald
Click here to download .ics calendar file
