Shao, Zhiyuan, Wang, Qiang, Xie, Xuejiao, Jin, Hai and He, Ligang (2011) Analyzing and improving MPI communication performance in overcommitted virtualized systems. In: 2011 IEEE 19th International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems (MASCOTS), Singapore, 25-27 Jul 2011. Published in: International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems. Proceedings pp. 381-389.

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Abstract

Nowadays, it is an important trend in the system domain to use the software-based virtualization technology to build the execution environments (e.g., Clouds) and serve high performance computing (HPC) applications. However, with the extra virtualization layer, the application performance may be negatively affected. Studies revealed that the communication performance of the MPI library, which is widely used by the HPC applications, would suffer a high penalty when a physical host machine becomes overcommitted by virtual processors (VCPU). Unfortunately, the problem has not received enough attention and has not been solved yet in literature. In this paper, we investigate the reasons behind the performance penalty, and propose a solution to improve the communication performance of running MPI applications in the overcommitted virtualized systems. The experimental results show that by our proposal, most HPC applications can gain performance improvement to different extents among the overcommitted systems, depending on their communication patterns and the over committing level.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software
Divisions:	Faculty of Science > Computer Science
Journal or Publication Title:	International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems. Proceedings
Publisher:	I E E E Computer Society
ISSN:	1526-7539
Book Title:	2011 IEEE 19th Annual International Symposium on Modelling, Analysis, and Simulation of Computer and Telecommunication Systems
Date:	2011
Page Range:	pp. 381-389
Identification Number:	10.1109/MASCOTS.2011.27
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Conference Paper Type:	Paper
Title of Event:	2011 IEEE 19th International Symposium on Modeling, Analysis & Simulation of Computer and Telecommunication Systems (MASCOTS)
Type of Event:	Other
Location of Event:	Singapore
Date(s) of Event:	25-27 Jul 2011
URI:	http://wrap.warwick.ac.uk/id/eprint/42342

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