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

Show the seven layers of iso''s osi model, Q. Show the seven layers of ISO'...

Q. Show the seven layers of ISO's OSI model? Ans:- The seven layers are given below:   -  Application Layer -  Presentation Layer -  Session Layer -  Transport Laye

What is a pseudo TTY, What is a pseudo tty? A pseudo tty or false termi...

What is a pseudo tty? A pseudo tty or false terminal enables external machines to connect by Telnet or rlogin. Without a pseudo tty, no connection can take place.

Give the solutions to the threats, Give the solutions to the threats In...

Give the solutions to the threats In order to implement solutions to the threats, it is advisable that the company should maintain proper password protected hardware. Wherever

Command to copy the ios image to a tftp server, What is the command to copy...

What is the command to copy the IOS image to a TFTP server? Ans) Copy flash tftp

Perfect shuffle permutation-concept of permutation network, Perfect Shuffle...

Perfect Shuffle Permutation This was advised by Harold Stone (1971). Consider N objects each characterized by n bit number say  X n-1, X n-2, X 0    (N is chosen such that N

Connection-oriented service, The connection-oriented service process for ne...

The connection-oriented service process for networking is same to the manner in which telephones are used. This is shown as follows: A caller dials a number of the receiver. The

Drawback of repeaters, Drawback of  Repeaters. Repeater  has no filte...

Drawback of  Repeaters. Repeater  has no filtering capability as it forwards  every frame. Repeater shell  be placed  at accurate distance  before  actual  signal becomes

What is logical link control, What is logical link control? One of two ...

What is logical link control? One of two sublayers of the data link layer of OSI reference model, as explained by the IEEE 802 standard. This sublayer is responsible for mainta

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