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Journal of Information Science and Engineering, Vol.18 No.5, pp.825-836 (September 2002)


Performance Modeling and Evaluation of MPI-I/O
on a Cluster*

Jacobo Barro, Juan Tourino, Ramon Doallo
and Victor M. Gulias
Department of Electronics and Systems
Department of Computer Science
University of A Coru?a
15071 A Coru?a, Spain
E-mail: juan@udc.es

Cluster computing is an area of growing interest in search to support parallel and distributed applications. Many of these applications are I/O intensive, and the limited bandwidth of the I/O subsystem of the cluster is an important bottleneck that is usually ignored. Thus, the performance of parallel I/O primitives is critical for overall cluster performance. In this work, we characterize the performance of basic ROMIO MPI-I/O routines on a PC cluster using the NFS and PVFS file systems. Our goal is to detect weak spots in the use of these routines and to predict their impact on the application¡¦s performance

Keywords: cluster computing, performance analysis, parallel I/O, MPI-I/O, ROMIO, NFS, PVFS

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Received August 31, 2001; accepted April 15, 2002.
Communicated by Jang-Ping Sheu, Makato Takizawa and Myongsoon Park.
This research was supported by Xunta de Galicia (Project PGIDT01-PXI10501PR).