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Cluster Computing Motivation - SERC

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¡PrimitiveComm. H/W¡Ethernet– Shared, Switched– 100 Mbps, (moderate performance, cost)– 1 Gbps (better performance, higher cost)¡Myrinet– Switched– Latency : < 2 us– Bandwidth: 1.28 Gbps / 2.56 GbsU-Net (Implementation)NIC (inefficient)– Kernel multiplexes application endpoints andhandles send/recvProcNICsyscallsenddescCmdnicDMADMATrapRecvdescRecv6

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