Subject: PEMCS Short Article

From: Mark Baker <[email-masked]>
Date: Mon, 20 Oct 97 15:02:39 +0000

Dear All,

I've just put up (at last!!) the first PEMCES short article at
http://hpc-journals.ecs.soton.ac.uk/PEMCS/Articles/

At the moment there is not much of a "house style" for the format
of the papers and articles - this will hopefully be developed over
the coming months.

I expect to put the first full paper up on the Web in the next week or
so.

Comments, ideas and help with the journal and its Web site are most
welcome.

Regards

Mark

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COMPARING COMMUNICATION PERFORMANCE OF MPI ON THE CRAY RESEARCH T3E-600 AND IBM SP-2 1
	
                                by
                Glenn R. Luecke and James J. Coyle
                    Iowa State University
                 Ames, Iowa 50011-2251, USA
                
                     Waqar ul Haque
                University of Northern British Columbia
               Prince George, British Columbia, Canada V2N 4Z9

Abstract 

This paper reports the performance of the Cray Research T3E and IBM SP-2 on a collection of 
communication tests that use MPI for the message passing. These tests have been designed to 
evaluate the performance of communication patterns that we feel are likely to occur in 
scientific programs. Communication tests were performed for messages of sizes 8 Bytes (B), 
1 KB, 100 KB, and 10 MB with 2, 4, 8, 16, 32 and 64 processors. Both machines provided a high 
level of concurrency for the nearest neighbor communication tests and moderate concurrency on 
the broadcast operations. On the tests used, the T3E significantly outperformed the SP-2 with 
most performance tests being at least three times faster than the SP-2. 

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CSM, University of Portsmouth, Hants, UK
Tel: +44 1705 844285	Fax: +44 1705 844006
E-mail: [email-masked]
Date: 10/20/97 - Time: 15:02:42
URL http://www.sis.port.ac.uk/~mab/
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