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DD-αAMG on QPACE 3

EPJ Web of Conferences, 2018, Vol.175, p.2007 [Peer Reviewed Journal]

2018. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2100-014X ;ISSN: 2101-6275 ;EISSN: 2100-014X ;DOI: 10.1051/epjconf/201817502007

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  • Title:
    DD-αAMG on QPACE 3
  • Author: Georg, Peter ; Richtmann, Daniel ; Wettig, Tilo
  • Pena Ruano, C. ; Gámiz Sánchez, E. ; Della Morte, M. ; Fritzsch, P.
  • Subjects: Microprocessors
  • Is Part Of: EPJ Web of Conferences, 2018, Vol.175, p.2007
  • Description: We describe our experience porting the Regensburg implementation of the DD-αAMG solver from QPACE 2 to QPACE 3. We first review how the code was ported from the first generation Intel Xeon Phi processor (Knights Corner) to its successor (Knights Landing). We then describe the modifications in the communication library necessitated by the switch from InfiniBand to Omni-Path. Finally, we present the performance of the code on a single processor as well as the scaling on many nodes, where in both cases the speedup factor is close to the theoretical expectations.
  • Publisher: Les Ulis: EDP Sciences
  • Language: English
  • Identifier: ISSN: 2100-014X
    ISSN: 2101-6275
    EISSN: 2100-014X
    DOI: 10.1051/epjconf/201817502007
  • Source: Open Access: EDP Open
    AUTh Library subscriptions: ProQuest Central
    GFMER Free Medical Journals
    ROAD: Directory of Open Access Scholarly Resources
    DOAJ Directory of Open Access Journals
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