InfiniBand SDR, DDR, and QDR Technology Guide

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What are the high performance network plans for your next cluster?

Will be moving to 10 GigE

Staying with basic GigE because cost/performance is fine

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The InfiniBand standard supports single, double, and quadruple data rate that enables an InfiniBand link to transmit more data. This paper discusses the characteristics of single data rate (SDR), double data rate (DDR), and quad data rate (QDR) InfiniBand transmission with respect to performance, transmission distances, and cabling considerations.