What it is InfiniBand is a switched fabric communications link used in high-performance computing and enterprise data centers. Its features include high throughput, low latency,quality of service and failover, and it is designed to bescalable. The InfiniBand architecture specification defines a connection between processor nodes and high performance I/O nodes such as storage devices.
HistoryInfiniBand originated from the 1999 merger of two competingdesigns: Future I/O, developed by Compaq, IBM, and Hewlett- Packard Next Generation I/O (ngio), developed by Intel, Microsoft, and SunInfiniband Trade Association maintains the specificationof both.
Basic Features• High speed, low latency data transport• Bidirectional serial bus• Switched fabric topology • Several devices communicate at once• Data transferred in packets that together form messages • Messages are direct memory access, channel send/receive, or mulitcast• Host Channnel Adapters (HCAs) are deployed on PCI cards
Overview Layered Protocol - Physical - Link, Network - Transport - Upper Layers Packet Based Communication Quality of Service Three Link Speeds - 1X - 2.5 Gb/s, 4 wire - 4X - 10 Gb/s, 16 wire - 2X - 30 Gb/s, 48 wire
PCB, Copper and Fiber Cable Interconnect Remote DMA Support Multicast and Unicast Support Reliable Transport Methods - Message Queuing Communication Flow Control - Link Level and End to End
Role of InfiBand InfiBand is ideally suited as the interconnect technology for Access Layer and Storage components Application and Back End IPC applications, for connectivity between Application and Back End layers, and from Back End to Storage Layers.