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Paper Details%T Using Two\-, Four\- and Eight\-Way Multiprocessors as Cluster Components %A Brian Vinter, Otto J. Anshus, Tore Larsen, John Markus Bjørndalen %E Alan G. Chalmers, Majid Mirmehdi, Henk Muller %B Communicating Process Architectures 2001 %X This work considers the pros and cons of different size SMPs as nodes in clusters. We investigate the Intel SMP architecture and consider the potential of and some problems with larger node\-sizes in clusters of multiprocessors. Six applications that represent different classes of parallel applications are developed in versions that support both shared and distributed memory. Performance measurements are done on three different clusters of multiprocessors, with the purpose of identifying how the number of processors in each SMP node impacts the cluster performance. Our results show that clusters using higher order SMPs do not give a clear performance benefit compared to clusters using two\-way SMPs. Off the bench mark\-suite of six applications, the performance of two turn out to be independent of node\-size, two show an advantage of larger node\-sizes, as much as 34 percent improvement of eight\-way nodes over a dual\-system, while the remaining two show an advantage of dual\-processor nodes as big as 11 percent over an eight\-way cluster. |
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