Basermann, Achim und Röhrig-Zöllner, Melven und Thies, Jonas (2015) The Highly Scalable Iterative Solver Library PHIST. 21th Advanced Supercomputing Environment (ASE) Seminar of the University of Tokyo, 2015-12-02, Tokio, Japan.
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Kurzfassung
As modern supercomputers approach the Exascale, many numerical libraries face scalability issues due to the massive increase in CPU cores compared to memory bandwidth. Sparse matrix algorithms, e.g. iterative linear and eigenvalue solvers, are particularly affected by the relatively slow memory subsystem. In the German Research Foundation (DFG) project ESSEX (Equipping Sparse Solvers for Exascale), we developed the flexible software framework PHIST for implementing iterative methods on HPC systems. PHIST (Pipelined Hybrid Iterative Solver Toolkit) has been developed containing an interface to the existing numerical software framework Trilinos originally. PHIST also includes adapters to basic building block libraries so that high-level algorithm developments can benefit from high-performance kernel implementations, e.g. sparse matrix-vector multiplication kernels. Moreover, PHIST provides systematic and continuous testing of all software components and allows us to develop stable implementations of innovative iterative methods in an evolving hard- and software environment. Using the PHIST framework, we present recent work on sparse eigenvalue solvers, from scalable basic operations to complete algorithms, with a focus on the difficult problem of finding interior eigenvalues. In this context, we also discuss the application of the CARP-CG method as a preconditioner for applications such as Graphene simulation.
elib-URL des Eintrags: | https://elib.dlr.de/100610/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Zusätzliche Informationen: | Funded through DFG Priority Programme 1648 “Software for Exascale Computing”, Project ESSEX | ||||||||||||||||
Titel: | The Highly Scalable Iterative Solver Library PHIST | ||||||||||||||||
Autoren: |
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Datum: | 2 Dezember 2015 | ||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||
Open Access: | Ja | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | Scalable library; iterative solvers; sparse eigenproblems; optimized kernels; hybrid parallelization; fault tolerance; test framework | ||||||||||||||||
Veranstaltungstitel: | 21th Advanced Supercomputing Environment (ASE) Seminar of the University of Tokyo | ||||||||||||||||
Veranstaltungsort: | Tokio, Japan | ||||||||||||||||
Veranstaltungsart: | Workshop | ||||||||||||||||
Veranstaltungsdatum: | 2 Dezember 2015 | ||||||||||||||||
Veranstalter : | Universität Tokio | ||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||
HGF - Programmthema: | Technik für Raumfahrtsysteme | ||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||
DLR - Forschungsgebiet: | R SY - Technik für Raumfahrtsysteme | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Vorhaben SISTEC (alt) | ||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||
Institute & Einrichtungen: | Institut für Simulations- und Softwaretechnik > Verteilte Systeme und Komponentensoftware | ||||||||||||||||
Hinterlegt von: | Basermann, Dr.-Ing. Achim | ||||||||||||||||
Hinterlegt am: | 09 Dez 2015 16:20 | ||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:06 |
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