Fast Ethernet and ATM are two attractive network technologies for interconnecting workstation clusters for parallel and distributed computing. This paper compares network interfaces with and without programmable co-processors for the two types of networks using the U-Net communication architecture to provide low-latency and high-bandwidth communication. U-Net provides protected, user-level access to the network interface and offers application-level round-trip latencies as low as 60 /spl mu/sec over Fast Ethernet and 90 /spl mu/sec over ATM. The design of the network interface and the underlying network fabric have a large bearing on the U-Net design and performance. Network interfaces with programmable co-processors can transfer data directly to and from user space while others require aid from the operating system kernel. The paper provides detailed performance analysis of U-Net for Fast Ethernet and ATM, including application-level performance on a set of Split-C parallel benchmarks. These results show that high-performance computing is possible on a network of PCs connected via Fast Ethernet.
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机译:快速以太网和ATM是用于互连工作站集群以进行并行和分布式计算的两种有吸引力的网络技术。本文比较了使用U-Net通信体系结构提供低延迟和高带宽通信的两种类型的网络在有无可编程协处理器的情况下的网络接口。 U-Net提供对网络接口的受保护的用户级别访问,并提供通过快速以太网的应用程序级往返延迟低至60 / spl mu / sec,而通过ATM则低至90 / spl mu / sec。网络接口和底层网络结构的设计对U-Net的设计和性能有很大的影响。具有可编程协处理器的网络接口可以直接在用户空间之间来回传输数据,而其他接口则需要操作系统内核的帮助。本文提供了针对快速以太网和ATM的U-Net的详细性能分析,包括在一组Split-C并行基准测试中的应用程序级性能。这些结果表明,在通过快速以太网连接的PC网络上可以实现高性能计算。
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