NDLI: Interprocessor communication for high performance, explicit time integration

Content Provider	Springer Nature Link
Author	Petropoulos, Georgios Fenves, Gregory L.
Copyright Year	2010
Abstract	Parallel, explicit finite element analysis is based almost exclusively on point-to-point interprocessor communication. However, point-to-point communication on multicore architectures results in large performance variability because of shared caches and sockets. The interprocessor communication required during the solution phase must be designed to achieve a high degree of scalability and performance for explicit time integration operators. An analysis of point-to-point communication on different hardware platforms, communication library implementations, and message sizes demonstrates the need for a flexible software design that allows for optimization. Autotuning modules and preliminary performance tests are necessary to identify the optimal combination of calls. Performance differences of point-to-point messaging on multicore machines are illustrated with a test that uses combinations of MPI communication calls. The differences are apparent when cache and sockets are shared among the cores and for message sizes up to 1.5 MB. Alternative communication schemes are shown to perform faster depending on the architecture and message size. Nearly linear scalability results for explicit time integration are demonstrated using the design techniques.
Starting Page	149
Ending Page	157
Page Count	9
File Format	PDF
ISSN	01770667
Journal	Engineering with Computers
Volume Number	26
Issue Number	2
e-ISSN	14355663
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-28
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	High-performance and scalability Parallel computation Explicit finite elements ApplicationMathematics/Computational Methods of Engineering Mechanics Calculus of Variations and Optimal Control; Optimization Systems Theory, Control Math. Applications in Chemistry Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Engineering Computer Science Applications Modeling and Simulation Software

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