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ServNET: Simple Cluster Management System

ServNET is a simple hardware and software solution for managing clusters, with RS-485 links supporting up to 125 nodes and 1,000 meters. It offers selective node reset, switching on/off power supply, and access to the node's serial console for configuration and monitoring. Used in various clusters and research centers.

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ServNET: Simple Cluster Management System

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  1. ServNET: cluster management (June 2003) RS-485 links:up to 125 nodes, up to 1,000 meters Several links (equaling the number ofCOM-ports) may be connected tothe control station.

  2. ServNET: simple hardware • Single-sided board. • OneAtmel microcontroller • Two Maxim chips (MAX232A и MAX487) • One chip for ferric RAM (FRAM) RAMTRON. • Few auxiliary components.

  3. ServNET: functionality • Selective node reset (SW: groups). • Selectiveswitching on/off of node’s power supply(SW: groups, also“smooth”, with a target latency “between nodes”). • Access to the serial console of the node allowing...

  4. Access to the serial console of the node allowsthe following: • To change the parameters of the BIOSnode. • LILO: select an OS to be loaded and the loading parameters of the Linux core. • To execute any commands in a console regime. • To monitor critical messages of the OS. • To read several last console messages from the nonvolatile memory of the ServNET board after failure.

  5. ServNET: production • Development – PSI of RAS, Production – Computer Research Institute, Minsk. • A pilot lot of more than 200 items has been produced. ServNET has been installed in: • T-Forge32 (16 nodes). • “SKIF К-500” (64 nodes) and other clusters in Minsk. • Clusters in Pereslavl. • Clusters inthe Research Computing Center of the Moscow State University (58 ServNET boards). • ServNET v.2: 2004,developed by PSI of RAS and T-platforms, produced byT-platforms.

  6. SKIF-ServNet v.2 • The size has become half as large (66 × 33 mm) if compared with the previous version.

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