MPICH-GQ: Quality-of-service for message passing programs

Alain Roy, Ian Foster, William Gropp, Nicholas Karonis, Volker Sander, Brian Toonen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Parallel programmers typically assume that all resources required for a program's execution are dedicated to that purpose. However, in local and wide area networks, contention for shared networks, CPUs, and I/O systems can result in significant variations in availability, with consequent adverse effects on overall performance. We describe a new message-passing architecture, MPICH-GQ, that uses quality of service (QoS) mechanisms to manage contention and hence improve performance of message passing interface (MPI) applications. MPICH-GQ combines new QoS specification, traffic shaping, QoS reservation, and QoS implementation techniques to deliver QoS capabilities to the high-bandwidth bursty flows, complex structures, and reliable protocols used in high-performance applications-characteristics very different from the low-bandwidth, constant bit-rate media flows and unreliable protocols for which QoS mechanisms were designed. Results obtained on a differentiated services testbed demonstrate our ability to maintain application performance in the face of heavy network contention.

Original languageEnglish (US)
Title of host publicationSC 2000 - Proceedings of the 2000 ACM/IEEE Conference on Supercomputing
PublisherAssociation for Computing Machinery
ISBN (Electronic)0780398025
DOIs
StatePublished - 2000
Externally publishedYes
Event2000 ACM/IEEE Conference on Supercomputing, SC 2000 - Dallas, United States
Duration: Nov 4 2000Nov 10 2000

Publication series

NameProceedings of the International Conference on Supercomputing
Volume2000-November

Conference

Conference2000 ACM/IEEE Conference on Supercomputing, SC 2000
Country/TerritoryUnited States
CityDallas
Period11/4/0011/10/00

Keywords

  • Differentiated services
  • MPI
  • Quality of service
  • TCP

ASJC Scopus subject areas

  • General Computer Science

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