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Intel® True Scale Fabric—Single Plane, Dual Plane, QDR-80 OverviewInfiniBand* fabrics being installed today by Intel utilize the Intel® True Scale Fabric. This is a single-plane fabric with QDR-40 HCA (Single Rail) connectivity. It provides the performance required by most applications in use today. A single-plane fabric has a single fabric ID and can be single- or multi-tier. This paper is to introduce two other concepts for constructing fabrics. These concepts are meant to provide higher bandwidth to and from each server through the fabric.QDR-80 provides up to 56 million messages per second, 80Gb/s link speed, and application BW up to approximately 6.7GB plus for each server with servers utilizing the Intel® Xeon® processor E5-2680. QDR-80 can be set to two modes which will be explored in more detail. One of these modes supports dual-plane fabrics. Dual-plane fabric is simply defined as two separate single-plane fabrics with each fabric having its own unique ID. A QDR-80 Server would attach one HCA to one Fabric and one HCA to the other. QDR-80 also can support a single-plane fabric. In fact, from a cost perspective, dual-plane fabrics really make sense up to the size of the largest single switch.Read the full Intel® True Scale Fabric—Single Plane, Dual Plane, QDR-80 Overview.
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