Characterization of MPI communication primitives on a heterogeneous cluster / Siti Arpah Ahmad ... [et al.]

Ahmad, Siti Arpah and Mohamed Said, Mohamed Faidz and Mohamed Ramli, Norazan and Taib, Mohd Nasir (2009) Characterization of MPI communication primitives on a heterogeneous cluster / Siti Arpah Ahmad ... [et al.]. Scientific Research Journal, 6 (2). pp. 23-30. ISSN 1675-7009

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Abstract

This paper focuses on the performance of basic communication primitives, namely the overlap of message transfer with computation in the point-to-point communication within a small cluster of four nodes. The mpptest has been implemented to measure the basic performance of MPI message passing routines with a variety of message sizes. The mpptest is capable of measuring performance with many participating processes thus exposing contention and scalability problems. This enables programmers to select message sizes in order to isolate and evaluate sudden changes in performance. Investigating these matters is interesting in that non-blocking calls have the advantage of allowing the system to schedule communications even when many processes are running simultaneously. On the other hand, understanding the characteristics of computation and communication overlap is significant, because high performance kernels often strive to achieve this, since it is both advantageous with respect to data transfer and latency hiding. The results indicate that certain overlap sizes utilize greater node processing power either in blocking send and receive operations or non-blocking send and receive operations. The results have elucidated a detailed MPI characterization of the performance regarding the overlap of message transfer with computation in a small cluster system.

Item Type: Article
Uncontrolled Keywords: Point-to-point communication, message passing interface, parallel computing, MPI characterization
Subjects: Q Science > QA Mathematics > Parallel processing (Electronic computers)
Divisions: Research Management Institute (RMI)
Depositing User: Staf Pendigitan 1
Date Deposited: 18 Oct 2015 08:28
Last Modified: 27 May 2016 11:31
URI: http://ir.uitm.edu.my/id/eprint/12924

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