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Defining and Controlling the Heterogeneity of a Cluster: the Wrekavoc Tool

Louis-Claude Canon 1, 2 Olivier Dubuisson 1 Jens Gustedt 1 Emmanuel Jeannot 2, 1 
1 ALGORILLE - Algorithms for the Grid
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
2 RUNTIME - Efficient runtime systems for parallel architectures
Inria Bordeaux - Sud-Ouest, UB - Université de Bordeaux, CNRS - Centre National de la Recherche Scientifique : UMR5800
Abstract : The experimental validation and the testing of solutions that are designed for heterogeneous environments is challenging. We introduce Wrekavoc as an accurate tool for this purpose: it runs unmodified applications on emulated multisite heterogeneous platforms. Its principal technique consists in downgrading the performance of the platform characteristics in a prescribed way. The platform characteristics include the compute nodes themselves (CPU and memory) and the interconnection network for which a controlled overlay network above the homogeneous cluster is built. In this article we describe the tool, its performance, its accuracy and its scalability. Results show that Wrekavoc is a very versatile tool that is useful to perform high-quality experiments (in terms of reproducibility, realism, control, etc.
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Submitted on : Friday, December 4, 2009 - 11:03:14 AM
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Louis-Claude Canon, Olivier Dubuisson, Jens Gustedt, Emmanuel Jeannot. Defining and Controlling the Heterogeneity of a Cluster: the Wrekavoc Tool. Journal of Systems and Software, Elsevier, 2010, 83 (5), pp.786-802. ⟨10.1016/j.jss.2009.11.734⟩. ⟨inria-00438616⟩



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