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SIGOPS
2008

Comparative evaluation of overlap strategies with study of I/O overlap in MPI-IO

9 years 7 months ago
Comparative evaluation of overlap strategies with study of I/O overlap in MPI-IO
Many scientific applications use parallel I/O to meet the low latency and high bandwidth I/O requirement. Among many available parallel I/O operations, collective I/O is one of the most popular methods when the storage layouts and access patterns of data do not match. The implementation of collective I/O typically involves disk I/O operations followed by interprocessor communications. Also, in many I/O-intensive applications, parallel I/O operations are usually followed by parallel computations. This paper presents a comparative study of different overlap strategies in parallel applications. We have experimented with four different overlap strategies 1) Overlapping I/O and communication; 2) Overlapping I/O and computation; 3) Overlapping computation and communication; and 4) Overlapping I/O, communication, and computation. All experiments have been conducted on a Linux Cluster and the performance results obtained are very encouraging. On an average, we have enhanced the performance of...
Christina M. Patrick, Seung Woo Son, Mahmut T. Kan
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where SIGOPS
Authors Christina M. Patrick, Seung Woo Son, Mahmut T. Kandemir
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