MYRINET MX DRIVER

Please help improve this article by adding citations to reliable sources. Articles needing additional references from September All articles needing additional references Webarchive template wayback links. Views Read Edit View history. See the Open-MX project homepage. To get the latest Open-MX news, you should subscribe to the open-mx-announce mailing list. By using this site, you agree to the Terms of Use and Privacy Policy. This paper describes the initial design and performance of Open-MX stack.

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For configuration details, see the headers of the corresponding output file. Summary Open-MX is a high-performance implementation of the Myrinet Express message-passing stack over generic Ethernet networks. Although it can be used as a traditional networking system, Myrinet is often used directly by programs that “know” about it, thereby bypassing a call into the operating system. These include flow control, error control, and “heartbeat” monitoring on every link.

Myrinet physically consists of two fibre optic cables, upstream and downstream, connected to the host computers with a single connector.

In the November TOP, the number of supercomputers using Myrinet was down to computers, or This article needs additional citations for verification.

This page was last edited on 13 Decemberat Bug reports and questions should be sent on the project tracker or on the open-mx-devel mailing list. 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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According to Myricom, Machines are connected via low-overhead routers and switchesas opposed to connecting one machine directly to another. For instance, if you replace the 2.

Myrinet Express over Generic Ethernet Hardware

Retrieved September 1, It provides application-level with wire-protocol compatibility with the native MXoE Myrinet Express over Ethernet stack. 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. Myrinet was promoted as myrimet lower protocol overhead than standards such as Ethernetand therefore better throughputless interference, and lower latency while using the host CPU.

The design of Open-MX is described in several papers. 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. Views Read Edit Myrine history.

To get the latest Open-MX news, you should subscribe to the open-mx-announce mailing list. September Learn how and when to remove this template message.

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 mydinet better performance. Get the latest Open-MX news by subscribing to the open-mx-announce mailing list. Please help improve this article by adding mz to reliable sources.

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Myrinet – Wikipedia

Support for Linux kernel starting with 2. See the Open-MX project homepage. From Wikipedia, the free encyclopedia. Open-MX is a high-performance implementation of the Myrinet Express message-passing stack over generic Ethernet networks.

Myrinet includes a number of fault-tolerance features, mostly backed by the switches. Articles needing additional references from September All articles needing additional references Webarchive template wayback links.

See also the news archive. Open-MX development resources are maintained on the Inria Gforge server. This paper describes the initial design and performance of Open-MX stack.

This paper describes an innovative memory pinning optimization in Open-MX based on pinning pages on-demand, overlapping this process with the communication, and decoupling it from user-space so as to implement a safe pinning cache using the kernel MMU-Notifier framework.

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