A Two-Level Scheduling Strategy for optimising communications of data parallel programs in clusters. (1st October 2010)

• Record Type: Journal Article
• Authors: Hsu, Ching-Hsien; Chen, Shih-Chang
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 6:Number 4(2010)
• Page Start: 263
• Page End: 269
• Publication Date: 2010-10-01
• Subjects: irregular data redistribution -- GEN&amp -- #95 -- BLOCK -- two-level scheduling -- communication optimisation -- data parallel programming -- clustering -- scheduling strategy -- irregular data distribution -- communications -- synchronisation delay; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

Irregular data distribution and redistribution have been attracting attention recently since it can distribute different size of data segments to heterogeneous processors. High Performance Fortran Version 2 (HPF2) provides GEN_BLOCK distribution format which facilitates generalised block distributions. In this paper, we present a two-level scheduling method to minimise the communication cost in such operations. The proposed technique isolates local messages from inter-processor messages and schedules both kinds of messages in separated steps to efficiently avoid synchronisation delay. The proposed technique which has been implemented with the traditional scheduling approach yields improved schedules for heterogeneous processors environment.