iWARP is a set of standards enabling Remote Direct Memory Access (RDMA) over Ethernet. iWARP supporting RDMA and OS bypass, coupled with TCP/IP Offload Engines, can fully eliminate the host CPU involvement in an Ethernet environment. With the iWARP standard and the introduction of 10-Gigabit Ethernet, there is now an alternative path to the proprietary interconnects for high-performance computing, while maintaining compatibility with existing Ethernet infrastructure and protocols. Recently, NetEffect Inc. has introduced an iWARP - enabled 10-Gigabit Ethernet Channel Adapter. This paper assesses the potential of such an interconnect for high-performance computing by comparing its performance with two leading cluster interconnects, InfiniBand and Myrinet-10G.
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