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An Approach to Visualize Remote Socket Traffic on the Intel Nehalem-EX

Iwainsky, Christian ; Reichstein, Thomas ; Dahnken, Christopher ; Mey, Dieter an ; Terboven, Christian ; Semin, Andrey ; Bischof, Christian (2011):
An Approach to Visualize Remote Socket Traffic on the Intel Nehalem-EX.
In: Lecture Notes in Computer Science, 6586, In: Euro-Par 2010 Parallel Processing Workshops, pp. 523-530,
Berlin, Heidelberg, Springer, 16th International Conference on Parallel Computing (Euro-Par 2010), Ischia, Italy, 31.08.-03.09.2010, ISBN 9783642218774,
DOI: 10.1007/978-3-642-21878-1_64,
[Conference or Workshop Item]

Abstract

The integration of the memory controller on the processor die enables ever larger core counts in commodity hardware shared memory systems with Non-Uniform Memory Architecture properties. Shared memory parallelization with OpenMP is an elegant and widely used approach to leverage the power of such systems. The binding of the OpenMP threads to compute cores and the corresponding memory association are becoming even more critical in order to obtain optimal performance. In this work we provide a method to measure the amount of remote socket memory accesses a thread generates. We use available performance monitoring CPU counters in combination with thread binding on a quad socket Nehalem EX system. For visualization of the collected data we use Vampir.

Item Type: Conference or Workshop Item
Erschienen: 2011
Creators: Iwainsky, Christian ; Reichstein, Thomas ; Dahnken, Christopher ; Mey, Dieter an ; Terboven, Christian ; Semin, Andrey ; Bischof, Christian
Title: An Approach to Visualize Remote Socket Traffic on the Intel Nehalem-EX
Language: English
Abstract:

The integration of the memory controller on the processor die enables ever larger core counts in commodity hardware shared memory systems with Non-Uniform Memory Architecture properties. Shared memory parallelization with OpenMP is an elegant and widely used approach to leverage the power of such systems. The binding of the OpenMP threads to compute cores and the corresponding memory association are becoming even more critical in order to obtain optimal performance. In this work we provide a method to measure the amount of remote socket memory accesses a thread generates. We use available performance monitoring CPU counters in combination with thread binding on a quad socket Nehalem EX system. For visualization of the collected data we use Vampir.

Title of Book: Euro-Par 2010 Parallel Processing Workshops
Series Name: Lecture Notes in Computer Science
Volume: 6586
Place of Publication: Berlin, Heidelberg
Publisher: Springer
ISBN: 9783642218774
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Scientific Computing
Zentrale Einrichtungen
Event Title: 16th International Conference on Parallel Computing (Euro-Par 2010)
Event Location: Ischia, Italy
Event Dates: 31.08.-03.09.2010
Date Deposited: 10 Jul 2012 14:15
DOI: 10.1007/978-3-642-21878-1_64
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