MYRINET MX DRIVER

Support for Linux kernel starting with 2. Open-MX is a high-performance implementation of the Myrinet Express message-passing stack over generic Ethernet networks. Retrieved from ” https: Direct access to all raw performance numbers is available here. This paper describes the design of the Open-MX stack and of its copy offload mechanism, and how the MX wire protocol and host configuration may be tuned for better performance. Myrinet includes a number of fault-tolerance features, mostly backed by the switches.

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This paper discussed cache-affinity-related problems in the Open-MX receive stack. Myrinet is a lightweight protocol with little overhead that allows it to operate with throughput close to the basic signaling speed of the physical layer. If you are looking for general-purpose Open-MX citations, please use this one. For configuration details, see the headers of the corresponding output file.

For instance, if you replace the 2. By using this site, you agree to the Terms of Use and Privacy Policy. Open-MX is a high-performance implementation of the Myrinet Express message-passing stack over generic Ethernet networks.

For supercomputing, the low latency of Myrinet is even more important than its throughput performance, since, according to Amdahl’s lawa high-performance parallel system tends to be bottlenecked by its slowest sequential process, which in all but the most embarrassingly parallel supercomputer workloads is often the latency of message transmission across the network.

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This paper discuss how to add basic support for Open-MX-aware coalescing in regular NIC so as to achieve optimal latency without disturbing message rate or increasing the host load. The Open-MX latency depends on the processor frequency. Retrieved September 1, Support for Linux kernel starting with 2.

See the Open-MX project homepage. See also the news archive. These include flow control, error control, and “heartbeat” monitoring on every link. September Learn how and when to remove this template message.

Retrieved from ” https: Extended revision of the Euro-Par paper, discussing myrint problems in the Open-MX receive stack and improving performance by enhancing the cache-efficiency from the NIC up to the application. Although it can be used as a traditional networking myeinet, Myrinet is often used directly by programs that “know” about it, thereby bypassing a call into the operating system.

The design of Open-MX is described in several papers.

[Rocks-Discuss] Processor limits for MX (Myrinet)

Bug reports and questions should be sent on the project tracker or on the open-mx-devel mailing list. To get the latest Open-MX news, you should subscribe to the open-mx-announce mailing list. Open-MX development resources are maintained myrinwt the Inria Gforge server.

This paper describes the design of the Open-MX stack and of its copy offload myrknet, and how the MX wire protocol and host configuration may be tuned for better performance. For additional discussions regarding the Open-MX development, see also the open-mx-devel mailing list but be aware that open-mx-announce is the only way to be informed about important news and releases.

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Myrinet Express over Generic Ethernet Hardware

Myrinet includes a number of fault-tolerance features, mostly backed by the switches. This paper describes the initial design and performance of Open-MX stack.

Views Read Edit View history. In the November TOP, the number of supercomputers myfinet Myrinet was down to computers, or It shows that adding Open-MX protocol knowledge in the NIC firmware and combining it with multiqueue capabilities improves performance by enhancing the cache-efficiency from the NIC up to the application.

Open-MX: Myrinet Express over Generic Ethernet Hardware

This article needs additional citations for verification. Get the latest Open-MX news by subscribing to the open-mx-announce mailing list. Myrinet physically consists of two fibre optic cables, upstream and downstream, connected mrinet the host computers with a single connector.

It provides application-level with wire-protocol compatibility with the native MXoE Myrinet Express over Ethernet stack. Machines are connected via low-overhead routers and switchesas opposed to connecting one machine directly to another.