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


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
CreatorsID Num. / Email
Ahmad, Siti
Mohamed Said, Mohamed FaidzUNSPECIFIED
Mohamed Ramli, NorazanUNSPECIFIED
Subjects: Q Science > QA Mathematics > Parallel processing (Electronic computers)
Divisions: Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC)
Journal or Publication Title: Scientific Research Journal
Journal: UiTM Journal > Scientific Research Journal
ISSN: 1675-7009
Volume: 6
Number: 2
Page Range: pp. 23-30
Item ID: 12924
Uncontrolled Keywords: Point-to-point communication, message passing interface, parallel computing, MPI characterization


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