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Title: Performance on a bandwidth constrained network: How much bandwidth do we need?

Abstract

In this research the authors approach the question of network design from the perspective of the applications and ask: How much network does one need? They answer this question, in the context of shared memory multiprocessors, for 4 scientific applications. They simulate their executions under infinite bandwidth assumptions and collect profiles of their varying bandwidth needs. These profiles are then fed into a performance model of how bursty traffic squeezes through a bandwidth constrained network. Their results suggest that networks should provide a remote memory bandwidth of 2--4 bits/operation and memory module bandwidths of 8--16 bits/op. The higher memory module bandwidth is needed because of hot spots in the traffic patterns. Further simulations show that these hot spots arise primarily because of randomness and not because of multiple accesses to a single location. Thus combining techniques will not be able to eliminate hot spots from these applications.

Authors:
 [1];  [2]
  1. Univ. of Southern Maine, Portland, ME (United States). Computer Science Dept.
  2. Univ. of California, Berkeley, CA (United States). Computer Science Dept.
Publication Date:
OSTI Identifier:
46285
Report Number(s):
CONF-931115-
TRN: IM9522%%287
Resource Type:
Conference
Resource Relation:
Conference: Supercomputing conference on high performance computing and communications, Portland, OR (United States), 15-19 Nov 1993; Other Information: PBD: 1993; Related Information: Is Part Of Supercomputing `93: Proceedings; PB: 961 p.
Country of Publication:
United States
Language:
English
Subject:
99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; ARRAY PROCESSORS; MEMORY MANAGEMENT; DATA TRANSMISSION; RESEARCH PROGRAMS; PARALLEL PROCESSING

Citation Formats

Boothe, B, and Ranade, A. Performance on a bandwidth constrained network: How much bandwidth do we need?. United States: N. p., 1993. Web.
Boothe, B, & Ranade, A. Performance on a bandwidth constrained network: How much bandwidth do we need?. United States.
Boothe, B, and Ranade, A. Fri . "Performance on a bandwidth constrained network: How much bandwidth do we need?". United States.
@article{osti_46285,
title = {Performance on a bandwidth constrained network: How much bandwidth do we need?},
author = {Boothe, B and Ranade, A},
abstractNote = {In this research the authors approach the question of network design from the perspective of the applications and ask: How much network does one need? They answer this question, in the context of shared memory multiprocessors, for 4 scientific applications. They simulate their executions under infinite bandwidth assumptions and collect profiles of their varying bandwidth needs. These profiles are then fed into a performance model of how bursty traffic squeezes through a bandwidth constrained network. Their results suggest that networks should provide a remote memory bandwidth of 2--4 bits/operation and memory module bandwidths of 8--16 bits/op. The higher memory module bandwidth is needed because of hot spots in the traffic patterns. Further simulations show that these hot spots arise primarily because of randomness and not because of multiple accesses to a single location. Thus combining techniques will not be able to eliminate hot spots from these applications.},
doi = {},
url = {https://www.osti.gov/biblio/46285}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {12}
}

Conference:
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