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arXiv · 1208.2849

Mapping Strategies for the PERCS Architecture

Venkatesan T. Chakaravarthy·Naga Praveen Kumar Katta·Monu Kedia·Ramakrishnan Rajamony·Aruna Ramanan·Yogish Sabharwal
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Abstract

The PERCS system was designed by IBM in response to a DARPA challenge that called for a high-productivity high-performance computing system. The IBM PERCS architecture is a two level direct network having low diameter and high bisection bandwidth. Mapping and routing strategies play an important role in the performance of applications on such a topology. In this paper, we study mapping strategies for PERCS architecture, that examine how to map tasks of a given job on to the physical processing nodes. We develop and present fundamental principles for designing good mapping strategies that minimize congestion. This is achieved via a theoretical study of some common communication patterns under both direct and indirect routing mechanisms supported by the architecture.

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Venkatesan T. Chakaravarthy, Naga Praveen Kumar Katta, Monu Kedia, Ramakrishnan Rajamony, Aruna Ramanan, Yogish Sabharwal. 2012-08-14. Mapping Strategies for the PERCS Architecture. https://arxiv.org/abs/1208.2849

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