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High-performance message-passing over generic Ethernet hardware with Open-MX

High-performance message-passing over generic Ethernet hardware with Open-MX,10.1016/j.parco.2010.11.001,Parallel Computing,Brice Goglin

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High-performance message-passing over generic Ethernet hardware with Open-MX (Citations: 1)


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In the last decade, cluster computing has become the most popular high-performance computing architecture. Although numerous technological innovations have been proposed to improve the interconnection of nodes, many clusters still rely on commodity Ethernet hardware to implement message-passing within parallel applications. We present Open-MX, an open-source message-passing stack over generic Ethernet. It offers the same abilities as the specialized Myrinet Express stack, without requiring dedicated support from the networking hardware. Open-MX works transparently in the most popular MPI implementations through its MX interface compatibility. It also enables interoperability between hosts running the specialized MX stack and generic Ethernet hosts. We detail how Open-MX copes with the inherent limitations of the Ethernet hardware to satisfy the requirements of message-passing by applying an innovative copy offload model. Combined with a careful tuning of the fabric and of the MX wire protocol, Open-MX achieves better performance than TCP implementations, especially on 10 gigabit/s hardware.

Journal: Parallel Computing - PC , vol. 37, no. 2, pp. 85-100, 2011

DOI: 10.1016/j.parco.2010.11.001

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Citation Context (1)

- ...Furthermore, Open-MX [29] has demonstrated high bandwidth and low CPU overhead when using the Intel IOA/T copy engine to move data between receive buffers of an Ethernet driver in the kernel and an RMA target in user space...
Scott Atchley, et al. The Common Communication Interface (CCI)