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Publications of Torsten Hoefler
Torsten Hoefler, Andre Lichei and Wolfgang Rehm:
| | | Low-Overhead LogGP Parameter Assessment for Modern Interconnection Networks
(In Proceedings of the 21st IEEE International Parallel & Distributed Processing Symposium, PMEO'07 Workshop, presented in Long Beach, CA, USA, IEEE Computer Society, ISBN: 1-4244-0909-8, Mar. 2007)
Abstract Network performance measurement and prediction is
very important to predict the running time of high performance computing applications. The LogP model family has
been proven to be a viable tool to assess the communication performance of parallel architectures. However, non-intrusive LogP parameter assessment is still a very difficult
task. We compare well known measurement methods for
Log(G)P parameters and discuss their accuracy and network contention. Based on this, a new theoretically exact measurement method that does not saturate the network is derived and explained in detail. Our method only
uses benchmarked values instead of computed parameters
to compute other parameters to avoid propagation of first-order errors. A methodology to detect protocol changes in
the underlying communication subsystem is also proposed.
The applicability of our method and the protocol change
detection is shown for the low-level API as well as MPI implementations of different modern high performance interconnection networks. The whole method is implemented in
the tool Netgauge and it is available as open source to the
public.
Documentsdownload article: 
download slides:
| | | BibTeX | @inproceedings{hoefler-pmeo07,
author={Torsten Hoefler and Andre Lichei and Wolfgang Rehm},
title={{Low-Overhead LogGP Parameter Assessment for Modern Interconnection Networks}},
institution={TU Chemnitz},
year={2007},
month={Mar.},
booktitle={Proceedings of the 21st IEEE International Parallel \& Distributed Processing Symposium, PMEO'07 Workshop},
location={Long Beach, CA, USA},
publisher={IEEE Computer Society},
isbn={1-4244-0909-8},
source={http://www.unixer.de/~htor/publications/},
} |
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