Paper Info
Title
Performance Evaluation of I/O Traffic and Placement of I/O Nodes on a High Performance Network
Abstract
A common trend in the design of large-scale clusters is to use a high-performance data network to integrate the processing nodes in a single parallel computer. In these systems the performance of the interconnect can be a limiting factor for the input/output (I/O), which is traditionally bottlenecked by the disk bandwidth. In this paper we present an experimental analysis on a 64-node AlphaServer cluster based on the Quadrics network (QsNET) of the behavior of the interconnect under I/O traffic, and the influence of the placement of the I/O servers on the overall performance. The effects of using dedicated I/O nodes or overlapping I/O and computation on the I/O nodes are also analyzed. In addition, we evaluate how background I/O traffic interferes with other parallel applications running concurrently. Our experimental results show that a correct placement of the I/O servers can provide upto 20% increase in the available I/O bandwidth. Moreover, some important guidelines for applications and I/O servers mapping on large-scale clusters are given.
Year
DOI
Venue
2002
10.1109/IPDPS.2002.1016565
IPDPS
Keywords
DocType
ISBN
computer networks,bandwidth,concurrent computing
Conference
0-7695-1573-8
Citations 
PageRank 
References 
0
0.34
11
Authors
4
Name
Order
Citations
PageRank
Salvador Coll160957.12
Fabrizio Petrini22050165.82
Eitan Frachtenberg3106085.08
Adolfy Hoisie41465123.85