Anzeige
Erschienen in:
2018 | OriginalPaper | Buchkapitel
Implementation and Performance Analysis of 2.5D-PDGEMM on the K Computer
verfasst von : Daichi Mukunoki, Toshiyuki Imamura
Erschienen in: Parallel Processing and Applied Mathematics
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
In this study, we propose a 2D-compatible implementation of 2.5D parallel matrix multiplication (2.5D-PDGEMM), which was designed to perform computations of 2D distributed matrices on a 2D process grid. We evaluated the performance of our implementation using 16384 nodes (131072 cores) on the K computer, which is a highly parallel computer. The results show that our 2.5D implementation outperforms conventional 2D implementations including the ScaLAPACK PDGEMM routine, in terms of strong scaling, even when the cost for matrix redistribution between 2D and 2.5D distributions is included. We discussed the performance of our implementation by providing a breakdown of the performance and describing the performance model of the implementation.