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InfiniBand

What is InfiniBand?

InfiniBand (IB) is a standard of computer networking communications which used in high performance computing that features very low latency and high throughput. It is use for data interconnect both among and within computers and it also used as either a direct or switched interconnect between servers, as well as an interconnect between storage systems. It is design to be scalable and uses a switched fabric network topology.

InfiniBand


In 2014, it was most commonly used interconnect in supercomputers. Mellanox and Intel manufacture InfiniBand host bus adapters and network switches. In February 2016, it was reports that Oracle Corporation had engineered its own InfiniBands switch units and server adapter chips for use in its own product lines and by third parties. Therefore Mellanox IB cards are available for Solaris, FreeBSD, RHEL (Red Hat Enterprise Linux), SLES (SUSE Linux Enterprise Server), Windows, HP-UX, VMware, and AIX. An interconnect, InfiniBands competes with Ethernet, Fibre Channel, and Intel Omni-Path. The technology is promotes by the InfiniBand Trade Association.

InfiniBand uses a switched fabric topology, as opposed to early shared medium Ethernet. All transmissions begin or end at a channel adapter. Therefore each processor contains a host channel adapter (HCA) and each peripheral has a target channel adapter (TCA). These adapters can also exchange information for security or quality of service (QoS).

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