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| Content Provider | ACM Digital Library |
|---|---|
| Author | Foster, Ian Karonis, Nicholas Roy, Alain J. Sander, Volker Gropp, William Toonen, Brian |
| 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-passingarchitecture, 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. |
| File Format | |
| ISBN | 0780398025 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2000-11-01 |
| Access Restriction | Subscribed |
| Subject Keyword | Mpi quality of service differentiated services tcp |
| Content Type | Text |
| Resource Type | Article |
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