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Infiniband

It is a broadly applied communications link used in HPC and clusters. InfiniBand implementations are prominent in server clusters where high-bandwidth and low latency are key requirements. Its architecture is a point-to-point bidirectional serial serial link intended for the connection of proccessors with high speed pheripherials, without the typical problems related with parallel buses in long distances. Despite being a serial link, it is capable of providing a serial connection signallingrate of about 2.5 Gbps. This technology supports double and quad data speeds. It uses a switched topology, so that many devices could share the net at the same time. Infiniband connections offer low latency, safety, high performance and quality service.

Myrinet

Myrinet is a cost-effective, high-performance, packet-communication and switching technology, widely used to interconnect clusters of workstations, PCs, servers, blade servers, or single-board computers, all this bringing high performance, providing high-data-rate and low-latency communication between host processes, and also high availability, being capable of detecting and isolating faults, and of using alternative communication paths. Under this architecture, devices are connected through routers and switches, which bring it multiple features as flow control, error control, and "heartbeat" continuity monitoring on every link. Myrinet also offers low-latency (cut-through switches, with monitoring for high-availability applications), switch networks (that can scale to tens of thousands of hosts, and that can also provide alternative communication paths between hosts) and Network Interface Cards (NICs) that execute firmware to offload protocol processing from the host computer.

Gigabit

Ethernet is highly accepted in the market, in addition with its capability of supporting almost all popular network protocols, make it the best technology for current networks. Its architecture consists in network nodes and interconnecting media. The network nodes fall into two major classes: Data terminal equipment (DTE)Devices that are either the source or the destination of data frames. DTEs are typically devices such as PCs, workstations, file servers, or print servers that, as a group, are all often referred to as end stations. Data communication equipment (DCE)Intermediate network devices that receive and forward frames across the network. DCEs may be either standalone devices such as repeaters, network switches, and routers, or communications interface units such as interface cards and modems.

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