DocumentCode
451232
Title
Performance evaluation and tuning of GRAPE-6 - towards 40 "real" Tflops
Author
Makino, Junichiro ; Kokubo, Eiichiro ; Fukushige, Toshiyuki
Author_Institution
University of Tokyo, Japan
fYear
2003
fDate
15-21 Nov. 2003
Firstpage
2
Lastpage
2
Abstract
In this paper, we describe the performance characteristics of GRAPE-6, the sixth-generation special-purpose computer for gravitational many-body problems. GRAPE-6 consists of 2048 custom pipeline chips, each of which integrates six pipeline processors specialized for the calculation of gravitational interaction between particles. The GRAPE hardware performs the evaluation of the interaction. The frontend processors perform all other operations, such as the time integration of the orbits of particles, I/O, on-the-fly analysis etc. The theoretical peak speed of GRAPE-6 is 63.4 Tflops. We present the result of benchmark runs, and discuss the performance characteristics. We also present the measured performance for a few real scientific applications. The best performance so far achieved with real applications is 35.3 Tflops.
Keywords
Astronomy; Clustering algorithms; Costs; Educational institutions; Hardware; Observatories; Orbital calculations; Permission; Pipelines; Tree data structures;
fLanguage
English
Publisher
ieee
Conference_Titel
Supercomputing, 2003 ACM/IEEE Conference
Print_ISBN
1-58113-695-1
Type
conf
DOI
10.1109/SC.2003.10021
Filename
1592905
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