Gourt > Computers > Software > Operating Systems > Network > Distributed (4)
Distributed computing is decentralised and parallel computing, using two or more computers communicating over a network to accomplish a common objective or task. The types of hardware, programming languages, operating systems and other resources may vary drastically. It is similar to computer clustering with the main difference being a wide geographic dispersion of the resources.
Organization
Organizing the interaction between each computer is of prime importance. In order to be able to use the widest possible range and types of computers, the protocol or communication channel should not contain or use any information that may not be understood by certain machines. Special care must also be taken that messages are indeed delivered correctly and that invalid messages are rejected which would otherwise bring down the system and perhaps the rest of the network.
Another important factor is the ability to send software to another computer in a portable way so that it may execute and interact with the existing network. This may not always be possible or practical when using differing hardware and resources, in which case other methods must be used such as cross-compiling or manually porting this software.
More on [ Distributed computing ]
Distributed Computing :: Computer Science
Concurrent :: Languages
High Availability :: Hardware Support
Microkernel :: Operating Systems
Object Oriented :: Operating Systems
Parallel :: Operating Systems
Research :: Operating Systems
Submicrokernel :: Operating Systems
HP's first 13.3-inch Pavilion vs. the competition
Wed, 01 Oct 2008 12:34:18 -0700
HP is shipping its first laptop with a 13.3-inch widescreen display. The HP Pavilion dv3500t series is already available on HP's site starting at $1,000, and a slightly higher-end configuration, the dv3520nr, is available for pre-order at Best Buy for $1,200. Other sites have reported that this model will be...
HP's first 13.3-inch Pavilion vs. the competition
Wed, 01 Oct 2008 12:34:18 -0700
HP is shipping its first laptop with a 13.3-inch widescreen display. The HP Pavilion dv3500t series is already available on HP's site starting at $1,000, and a slightly higher-end configuration, the dv3520nr, is available for pre-order at Best Buy for $1,200. Other sites have reported that this model will be...
HP's first 13.3-inch Pavilion vs. the competition
Wed, 01 Oct 2008 12:34:18 -0700
HP is shipping its first laptop with a 13.3-inch widescreen display. The HP Pavilion dv3500t series is already available on HP's site starting at $1,000, and a slightly higher-end configuration, the dv3520nr, is available for pre-order at Best Buy for $1,200. Other sites have reported that this model will be...
A new mystery: What's Microsoft got up its Office Live sleeve?
Wed, 01 Oct 2008 12:22:06 -0700
It sounds like Microsoft has yet another Professional Developers Conference PDC announcement percolating -- beyond the Windows 7, Oslo, cloud OS (Red Dog/Zurich) and Mesh Platform stuff about which the company already has been dropping hints. by Mary Jo Foley
A new mystery: What's Microsoft got up its Office Live sleeve?
Wed, 01 Oct 2008 12:22:06 -0700
It sounds like Microsoft has yet another Professional Developers Conference PDC announcement percolating -- beyond the Windows 7, Oslo, cloud OS (Red Dog/Zurich) and Mesh Platform stuff about which the company already has been dropping hints. by Mary Jo Foley
A new mystery: What's Microsoft got up its Office Live sleeve?
Wed, 01 Oct 2008 12:22:06 -0700
It sounds like Microsoft has yet another Professional Developers Conference PDC announcement percolating -- beyond the Windows 7, Oslo, cloud OS (Red Dog/Zurich) and Mesh Platform stuff about which the company already has been dropping hints. by Mary Jo Foley
AgentOS - Mobile agent system for ubiquitous computing; new way to cope with the wide-area, large-scale ubiquitous computing environment of near future. Allows access to personal and collaborative computing services anywhere, via varied desktop and mobile computing devices.
AgentOS: Agent-based Distributed Operating System for Mobile Networks - Agent-based communication models show great promise to operate in unpredictable, metamorphic environments, such as mobile computing networks. Excellent basic explanations, clear arguments, well reasoned; from Crossroads, ACM student magazine.
Meta Description: [ Agent Based Distributed Operating
System for Mobile Networks; ACM Crossroads 5-2 ]
AtomsNet - Modular object-oriented application to index files across networks. Consists of plug-in type data retrieval system, webserver, peer-to-peer connections for network-wide information gathering, retrieval; has features of OSs, database management systems, distributed networking. [Open Source, GPL]
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Distributed Operating Systems - Short, annotated, alphabetically sorted list and links, part of larger system.
E1 - A distributed operating system based on the concepts of object replication, component model support and persistence. It consists of a L4 microkernel and a set of distributed objects acting at the user level. [Open source]
Meta Description: [ The E1 operating system is aimed to provide efficient support for reliable distributed computing, based on object replication, component model support and persistence. ]
GLUnix - Global Layer Unix; technology trends in high-speed, low-latency LANs suggest convergence of hardware in Massively Parallel Processors, MPPs, and Networks of Workstations, NOWs. Relative to many MPPs, NOWs offer more cost-effectiveness and scalability, and less hardware and software development time. Soon, the main difference between NOWs and MPPs will be OS software.
GUIDE - Grenoble Universities Integrated Distributed Environment. Object-oriented distributed OS to develop and operate distributed applications on local area networks of workstations and servers. Joint project Bull, IMAG Research Institute; related to COMANDOS, BROADCAST Esprit Projects.
Hive - Distributed Unix operating system for Stanford FLASH multiprocessor; survives hardware and software faults, performance near commercial Unix. Arranged as internal system of independent kernels (cells) for reliability, scalability.
Hurricane - hierarchically clustered OS implemented on Hector multiprocessor; manages system resources in clusters, using tight coupling within clusters, loose coupling across clusters. Succeeded by Tornado.
Institute for Distributed Systems: IVS - Researches distributed and realtime operating systems, communication, software engineering. Part of Department of Computer Science at the Otto-von-Guericke-University of Magdeburg. Some information on site not in English.
MIT LCS PDOS - Parallel and Distributed Operating Systems Group; research focus: extensible and flexible system services: filesystems, networking, languages. Projects: 'C, Chord, Click, Exokernel (Exopc), Grid, Prolac, RON, and SFS. Funding: DARPA, NSF; ATT, IBM, Intel. Many open source downloads.
MOSIX - Software package to enhance Unix kernels (7 so far) and Linux with cluster computing abilities. Lets any size cluster of x86-based workstations and servers work cooperatively as if part of one system. [Open Source, GPL]
MOSIX Clusters of Surplus Computers for Providing Common Network Services and Applications - Details active project to illustrate use of MOSIX to create clusters of surplus machines that can be used to provide network services, application resources.
Meta Description: [ Extensive discussion of my experiences with constructing a mosix cluster from surplus machines and using it to provide network file and application services. Discussion of the development of a mod_perl-driven web application. Very detailed, can be used as a roadmap by those with limited experien... ]
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Plan B Operating System - An operating system that lets applications be built simpler. The system selects and combines resources from the network semi-automatically.
Quarks - Simple, yet efficient distributed shared memory (DSM) system; a user-level library plus header files supports DSM on groups of Unix workstations. Runs on 4.3BSD/M68k, HP-UX/PA-RISC, IRIX 5.2/MIPS, SunOS 4.1/SPARC. [Open Source, public domain]
Sprite - Distributed OS gives one system image to/over a networked cluster of workstations, research project, Berkeley, John Outerhoust group; high file system performance via client and server caching, process migration to use idle machines; testbed for research in file systems (log-structured, striped, RAID), crash recovery.
SUMO - Support for Multimedia in Operating systems, Lancaster University: microkernel OS with facilities to support distributed realtime and multimedia applications and ODP-based multimedia distributed application platforms.
The Brave New OS of the Future - Brief, simple layman's treatment of Carnegie Mellon University's Odyssey project; IBM Research's Autonomic Computing initiative; Microsoft's Farsite project. [CNN.com]
Meta Description: [ Operating systems will become highly distributed and self-healing and will collaborate with applications. , ]
Tornado - Object-oriented operating system for large-scale shared-memory multiprocessors. Minimizes data sharing via careful design: often eliminates data sharing even when sharing appears natural. Successor to Hurricane.
WebOS - Gives distributed OS services needed to build applications that are wide-area, highly available, incrementally scalable, dynamically reconfiguring, with mechanisms for: resource discovery, global namespace, remote process execution, resource management, authentication, security.
XOS - Distributed operating system, to be fully object-oriented, preemptively multithreaded/tasked, event/message-driven. Little code yet, but design documents and links are interesting, useful reading.
Meta Description: [ OS-Developement, OS-Entwicklung ]
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