Wait protocol in parallel programming , Computer Networking

Assignment Help:

Wait protocol

The wait protocol is used for resolving the conflicts, which arise due to number of multiprocessors demanding the same resource. There are two types of wait protocols: busy-wait and sleep-wait. In busy-wait protocol, process stays in the process context register, which continuously tries for processor availability. In sleep-wait protocol, wait protocol process is detached from the processor and is kept in the wait queue. The hardware complexity of this protocol is more than busy-wait in multiprocessor system; if locks are used for synchronization then busy-wait is used more than sleep-wait.

Implementation modes of a multiprocessor: Several modes of multiprocessing include parallel implementation  of programs at (i) Fine Grain Level  (Process Level), (ii) Medium Grain Level (Task Level), (iii) Coarse Grain Level (Program Level).

For implementing the programs in these modes, the following conditions / actions are required at OS level.

i) Context switching among multiple processes should be fast. In order to make context Switching simple multiple sets should be present.

i) The memory allocation to various processes should be quick and context free.

ii) The Synchronization mechanism among multiple processes should be effective.

iii) OS should give software tools for performance monitoring.

 


Related Discussions:- Wait protocol in parallel programming

Leased satellite channel, LEASED SATELLITE CHANNEL: It may span arbitr...

LEASED SATELLITE CHANNEL: It may span arbitrarily big distance. It is given in the figure below.   Figure Satellite connections are low bandwidth to protect cost

What security risks present on the networks, Security risks present on the ...

Security risks present on the networks Lots of risks are present everywhere on Internet as well as on Intranet, if it is not known what is being done. Every day a number of

Describe mail access protocols, Q. Describe Mail Access Protocols? Mai...

Q. Describe Mail Access Protocols? Mail Access Protocols - Used by receiver to retrieve mail when desired - Post Office Protocol, version 3 (POP3) is a simple limited

Explain about star topology, Explain about star topology This topology,...

Explain about star topology This topology, obviously, needs a great deal of cabling. This design gives an excellent platform for reconfiguration and trouble-shooting. Changes t

Disk encryption and block cipher, Suppose AES (or any block cipher) is used...

Suppose AES (or any block cipher) is used to encrypt data. Which mode of encryption covered in class is best suited for each of the following two scenarios and why? If more than on

Permutation representation through matrix, Q. Permutation representation th...

Q. Permutation representation through Matrix? Figure: Clos Network The functioning of this above permutation is displayed in Figure. This permutation is able to

What are the value added services, What are the value added services Ma...

What are the value added services Many organisations are demanding higher services (also called value added services) such as faxing, minimal cost call routing, connectivity to

Hardware sharing - fundamentals of networks , Hardware Sharing  ne...

Hardware Sharing  network  facilitate the  sharing  devices. For  example  instead of giving  each of 10 employees in  department  of the internet  on modern society is har

Nfs best performance, what parameters should i have for the best nfs v4 per...

what parameters should i have for the best nfs v4 performance?

Efficiency vs. number of processors, Efficiency :- The other main metr...

Efficiency :- The other main metric used for performance measurement is efficiency of parallel computer system i.e. how the resources of the parallel systems are being utilized

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd