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HOME > JOURNALS BY SUBJECT > COMPUTER SCIENCE > PPL
Parallel Processing Letters (PPL)
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Volume: 15, Issues: 1-2 (2005) pp. 223-236     DOI: 10.1142/S0129626405002179
Abstract | Full Text (PDF, 627KB) | References
Title: EXPERIMENTAL RESULTS ABOUT MPI COLLECTIVE COMMUNICATION OPERATIONS
Author(s):
MASSIMO BERNASCHI
Istituto Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche, 137 viale del Policlinico, Roma, 00161, Italy

GIULIO IANNELLO
Facoltà di Ingegneria, Università Campus Bio-Medico di Roma, 83 Via Emilio Longoni, Roma, 00155, Italy

SAVERIO CREA
Istituto Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche, 137 viale del Policlinico, Roma, 00161, Italy
History:
Received June 2004
Revised April 2005
Abstract:
Collective communication performance is critical in a number of MPI applications. In this paper we focus on two widely used primitives, broadcast and reduce, and present experimental results obtained on a cluster of PC connected by InfiniBand. We integrated our algorithms in the MPICH library and we used MPICH implementation of broadcast and reduce primitives to compare the performance of our algorithms based on α-trees. Our tests show that the MPICH implementation can be improved.
Keywords:
MPI; Parallel; MPICH; Performance; Broadcast; Reduce

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