NDLI: Tuning system-dependent applications with alternative MPI calls: a case study

Content Provider	IEEE Xplore Digital Library
Author	Le, T.T.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. Eng., San Jose State Univ., CA, USA (Le, T.T.)
Abstract	This paper shows the effectiveness of using optimized MPI calls for MPI based applications on different architectures. Using optimized MPI calls can result in reasonable performance gain for most of MPI based applications running on most of high-performance distributed systems. Since relative performance of different MPI function calls and system architectures can be uncorrelated, tuning system-dependent MPI applications by exploring the alternatives of using different MPI calls is the simplest but most effective optimization method. The paper first shows that for a particular system, there are noticeable performance differences between using various MPI calls that result in the same communication pattern. These performance differences are in fact not similar across different systems. The paper then shows that good performance optimization for an MPI application on different systems can be obtained by using different MPI calls for different systems. The communication patterns that were experimented in this paper include the point-to-point and collective communications. The MPI based application used for this study is the general-purpose transient dynamic finite element application and the benchmark problems are the public domain 3D car crash problems. The experiment results show that for the same communication purpose, using alternative MPI calls can result in quite different communication performance on the Fujitsu HPC2500 system and the 8-node AMD Athlon cluster, but very much the same performance on the other systems such as the Intel Itanium2 and the AMD Opteron clusters.
Sponsorship	Int. Assoc. for Comput. and Inf. Sci. (ACIS)
Starting Page	137
Ending Page	143
File Size	232280
Page Count	7
File Format	PDF
ISBN	0769522971
DOI	10.1109/SERA.2005.67
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer aided software engineering Concurrent computing Hardware Application software Finite element methods Message passing Delay Performance gain Optimization methods Vehicle crash testing
Content Type	Text
Resource Type	Article

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