11 describe a typical configuration of a pc 12 which

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Unformatted text preview: upport multiprogramming. However, the main difference between these two types of systems is that supercomputers primarily address processor-bound applications whereas mainframe systems are oriented to input/output-bound applications. 8. Supercomputers use multiprocessing and parallel processing technologies to solve complex problems faster, and hence they are also known as parallel computers or parallel processing systems. Moreover, modern supercomputers employ hundreds of processors and are also known as massively parallel processors. 9. Parallel computers are of two types - shared memory parallel computer and distributed memory parallel computer. In a shared memory parallel computer, there is a systemwide primary memory that is shared by all the processors and any communication between the processors usually takes place through the shared memory. On the other hand, in a distributed memory parallel computer, the processors do not share memory, and each processor has its own local memory. All communication between the processors is done by passing messages across the network that interconnects the processors. Hence distributed memory parallel computers are also known as message passing parallel computers. 10. A client-server computing environment is comprised of multiple clients, one or more servers, and a network. A client is generally a single-user PC or workstation that provides a highly user-friendly interface to the end user. It runs client processes, which send service requests to the server. A server is generally a relatively large computer that manages a shared resource and provides a set of shared user services to the clients. It runs the server process, which services client requests for use of the resource managed by the server. The network may be a single LAN or WAN or an internet of networks. 11. A set of computers interconnected together to form a client-server computing environment is collectively known as a distributed computing system or distributed system. 12. Client-serve...
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This document was uploaded on 04/07/2014.

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