NDLI: Automatically Tuned Collective Communications

Content Provider	IEEE Xplore Digital Library
Author	Vadhiyar, S.S. Fagg, G.E. Dongarra, J.
Copyright Year	2000
Description	Author affiliation: University of Tennessee, Knoxville (Vadhiyar, S.S.)
Abstract	The performance of the MPI's collective communications is critical in most MPI-based applications. A general algorithm for a given collective communication operation may not give good performance on all systems due to the differences in architectures, network parameters and the storage capacity of the underlying MPI implementation. In this paper, we discuss an approach in which the collective communications are tuned for a given system by conducting a series of experiments on the system. We also discuss a dynamic topology method that uses the tuned static topology shape, but re-orders the logical addresses to compensate for changing run time variations. A series of experiments were conducted comparing our tuned collective communication operations to various native vendor MPI implementations. The use of the tuned collective communications resulted in about 30%-650% improvement in performance over the native MPI implelementations.
Starting Page	3
Ending Page	3
File Size	201571
Page Count	1
File Format	PDF
ISBN	0780398025
ISSN	10639535
DOI	10.1109/SC.2000.10024
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-11-04
Access Restriction	Subscribed
Rights Holder	Non IEEE
Subject Keyword	Network topology Shape Mathematical model Lifting equipment Computer science Application software Fault tolerance Clustering algorithms US Department of Energy Contracts
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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