Digital Library

cab1

 
Title:      ONE SIZE DOES NOT FIT ALL: A CASE FOR HETEROGENEOUS MULTIPROCESSOR SYSTEMS
Author(s):      Pedro Trancoso
ISBN:      972-99353-6-X
Editors:      Nuno Guimarães and Pedro Isaías
Year:      2005
Edition:      1
Keywords:      Heterogeneous Multiprocessor, Energy Consumption, Database Workload.
Type:      Full Paper
First Page:      15
Last Page:      22
Language:      English
Cover:      cover          
Full Contents:      click to dowload Download
Paper Abstract:      Traditionally, general-purpose multiprocessor systems are built out of a certain number of identical nodes, i.e. the systems are homogeneous. Heterogeneous systems are exceptions that happen only for special-purpose applications, for large-scale systems, or as a consequence of node updates. Nevertheless, different applications do not have the same characteristics or even the same goals. Consequently, a heterogeneous system is a much better match for the application requirements. The objective of this work is to find the best matching heterogeneous system configuration for a workload composed of database queries which may have one of two goals: high-performance or low-energy. Experiments were performed on simulated systems with up to 32 nodes and using a large number of database queries, where 50% of them had as goal high-performance and the rest low-energy. The results showed that for medium and large systems the heterogeneous configuration achieves a significant reduction of the total penalty, up to 62%, compared to the best homogeneous configuration. In addition, a heterogeneous system configured using a simple heuristic achieved a penalty reduction within 3% from the best heterogeneous configuration found with exhaustive search. These results lead to the conclusion that when configuring a multiprocessor it is necessary to seriously consider a heterogeneous configuration.
   

Social Media Links

Search

Login