You can manage bookmarks using lists, please log in to your user account for this.
Media type:
E-Article
Title:
Performance Evaluation of a Hybrid Programming Model for RSDFT on T2K Open Supercomputer
Contributor:
Tsuji, Miwako;
Sato, Mitsuhisa
Published:
SAGE Publications, 2011
Published in:
Journal of Algorithms & Computational Technology, 5 (2011) 2, Seite 199-219
Language:
English
DOI:
10.1260/1748-3018.5.2.199
ISSN:
1748-3026
Origination:
Footnote:
Description:
<jats:p> Non-uniform memory access (NUMA) systems, where each processor has its own memory, have been popular platform in high-end computing. While some early studies had reported that a flat-MPI programming model outperformed an OpenMP/MPI hybrid programming model on SMP clusters, the hybrid of a shared-memory, thread- based programming and a distributed-memory, message passing programming is considered to be a promising programming model on the multi-core multi-socket NUMA clusters. We explore the performance of the OpenMP/MPI hybrid programming model on a large scale multi-core multi-socket cluster called T2K Open Supercomputer to reveal the nature of the hybrid programming model on such clusters. We extend the Real-Space Density Functional Theory (RSDFT) code to the OpenMP/MPI hybrid version. We show and discuss the performance for several routines in RSDFT code which have different characteristics in operation and communication. </jats:p>