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Concurrent Reading and Writing using Mobile Agents
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bet | 1/7 | Sana | 27.05.2022 | Hajmi | 1.92 Mb. | | #22085 |
Bog'liq taqsimlangan O‘zbekiston respublikasi oliy va o‘rta maxsus ta’lim vazirligi u, 1111 - Sukumar Ghosh
- University of Iowa
- Fall 2012
What is a distributed system? What is a distributed system? - Abstract view: It is a network of processes.
- (The nodes are processes, and the edges are communication channels.)
- A channel may be physical (wired, wireless) or logical
Example - A record of email communication among 436 employees of one of the Hewlett Packard Research Labs during the completion of a project. It is a trivial example of a distributed system.
Facts - Technology has dramatically reduced the cost of processors, so their population is exploding.
- User demands for services have increased the scale of systems (Facebook has more than500 million users)
- We live in a networked society.
Examples - Large networks are very commonplace these days. Think of the world wide web. A few examples of distributed systems are:
- eBay for internet-based auction
- Sensor networks
- BitTorrent (P2P network) for downloading video / audio
- Skype for making free audio and video communication
- Facebook (the oxygen of many people)
- Process control networks in engineering factories
- Computational grids (OSG, Teragrid, SETI@home)
- Network of mobile robots collectively doing a job
- Distance education, net-meeting etc.
- Netbanking
- Vehicular networking
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