MYRINET MX INTERCONNECT DRIVER

Views Read Edit View history. Articles needing additional references from September All articles needing additional references Webarchive template wayback links. 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. The design of Open-MX is described in several papers. 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.

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Although it can be used mz a traditional networking system, Myrinet is often used directly by programs that “know” about it, thereby bypassing a call into the operating system. Support for Linux kernel starting with 2.

For instance, interxonnect you replace the 2. These include flow control, error control, and “heartbeat” monitoring on every link. This paper discussed cache-affinity-related problems in the Open-MX receive stack.

In the November TOP, the number of supercomputers using Myrinet was down to computers, or Open-MX development resources are maintained on the Inria Gforge server. By using this site, you agree to the Terms of Use and Privacy Policy. MyriG started shipping at the end of If you are looking for general-purpose Open-MX citations, please use this one.

Myrinet physically consists of two fibre optic cables, upstream and downstream, connected to the host computers with a single connector. Articles needing additional references from September All articles needing additional references Webarchive template wayback links.

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Extended revision of the Euro-Par paper, discussing cache-affinity-related problems in the Open-MX receive stack and improving performance by enhancing the cache-efficiency from the NIC up to the application. 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.

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.

Direct access to all raw performance numbers is available here.

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. This paper discuss how to add basic support for Open-MX-aware coalescing in regular NIC so as to achieve interconnecg latency without disturbing message rate or increasing the interconnech load.

Myrinet includes a number of fault-tolerance features, mostly backed by the switches. 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.

Open-MX is a high-performance implementation of the Myrinet Express message-passing stack over generic Ethernet networks.

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Myrinet Express over Generic Ethernet Hardware

Get the latest Open-MX news by subscribing to the open-mx-announce mailing list. 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.

This page was last edited on 13 Decemberat Retrieved September 1, For configuration details, see the headers of the corresponding output file. It provides application-level with wire-protocol compatibility with the native MXoE Myrinet Express over Ethernet stack.

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

Myrinet – Wikipedia

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. The Open-MX latency depends on the processor frequency. Views Read Edit View history. See also the news archive. This paper describes the initial design and performance of Open-MX stack.

Summary Open-MX is a high-performance implementation of the Myrinet Express message-passing stack over generic Ethernet networks.