sponsored byACMIEEE The International Conference for High Performance 
Computing, Networking, Storage and Analysis
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SCHEDULE: NOV 15-20, 2015

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Advanced OpenMP: Performance and 4.1 Features

SESSION: Advanced OpenMP: Performance and 4.1 Features

EVENT TYPE: Tutorials

EVENT TAG(S): Performance, Programming Systems, Accelerators

TIME: 8:30AM - 5:00PM

Presenter(s):Christian Terboven, Michael Klemm, Ruud van der Pas, Eric J. Stotzer, Bronis R. de Supinski

ROOM:13AB

ABSTRACT:

With the increasing prevalence of multicore processors, shared-memory programming models are essential. OpenMP is a popular, portable, widely supported and easy-to-use shared-memory model. Developers usually find OpenMP easy to learn. However, they are often disappointed with the performance and scalability of the resulting code. This disappointment stems not from shortcomings of OpenMP but rather with the lack of depth with which it is employed. Our “Advanced OpenMP Programming” tutorial addresses this critical need by exploring the implications of possible OpenMP parallelization strategies, both in terms of correctness and performance.
While we quickly review the basics of OpenMP programming, we assume attendees understand basic parallelization concepts. We focus on performance aspects, such as data and thread locality on NUMA architectures, false sharing, and exploitation of vector units. We discuss language features in-depth, with emphasis on advanced features like tasking or cancellation. We close with the presentation of the directives for attached compute accelerators. Throughout all topics we present the new additions of OpenMP 4.1, which will be released during SC15.

Chair/Presenter Details:

Christian Terboven - RWTH Aachen University

Michael Klemm - Intel Corporation

Ruud van der Pas - Oracle Corporation

Eric J. Stotzer - Texas Instruments Incorporated

Bronis R. de Supinski - Lawrence Livermore National Laboratory

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