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May 12, 2006Infinband primerBy: Ovais KhanA nice primer on Infinband appeared in Computer Technology Review. The author, Dave Ellis, is the director of HPC Architecture, Engenio Storage Group, LSI Logic Corporation.InfiniBand is one of a few I/O architectures initially developed to address high bandwidth, low latency requirements for High Performance Computing (HPC) environments. While early HPC deployments may have used Ethernet interconnects, a certain amount of latency inherent to TCP/IP limited the overall potential performance of the clusters. Since the transport requirements for compute intensive applications do not need all the features of TCP/IP, development began on streamlined I/O architectures. The resulting solutions like Myrinet and InfiniBand support a Message Passing Interface (MPI) over high bandwidth (10 Gigabits per second, Gb/s), very low latency transport architectures. 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