Unformatted text preview: switched physical medium to scale better – original at 3Mb/s (shared), 1Gb/sec (switched) common now, with 10Gb/sec and soon 100Gb/sec in HPC environments CMSC 714 - Alan Sussman 4 Infiniband ! Designed to support I/O and network connectivity, from a single PCB to a cluster network to a LAN – over copper (twisted pairs) and fiber ! Targeted at cluster networks, SANs, and even embedded systems – scalable, and provides RAS – “bandwidth out of the box” – idea is to extend the on-processor I/O bus to off-chip network ! Switched ooint-to-point I/O fabric – endpoints (host machines, I/O devices, …) connect to switches, which route connections to other endpoints – link speed from 2.5Gb/sec (1X) to 30GB/sec (12X) by adding more wires – parallel transfers ! Protocols described in terms of standard network layers – physical, link, network, transport CMSC 714 - Alan Sussman...
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- Fall '07
- Computer network, Local area network, Alan Sussman, ooint-to-point I/O fabric, wall clock timings