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

Local and wide area networking, A. Current setting A new bank has its he...

A. Current setting A new bank has its headquarters located in City A. Recently, the bank has opened its first branch in City B, and its data centre in City C. The three cities a

Options - transport layer, Options The options  fields may be  used to...

Options The options  fields may be  used to  provide  other functions that are not  covered by  the header. If the length  of the  options  field is not  a multiple of 32 bits

How to connect remote lans, Q. How to connect Remote LANs? - Remote br...

Q. How to connect Remote LANs? - Remote bridges acting as connecting devices to connect LANs and point-to-point networks such as leased telephone lines or ADSL lines

Calculate link utilisation - exchanging packets, a)  Assume that the time r...

a)  Assume that the time required to transmit one packet (i.e. the packet length divided by link data rate) is 10ms and the Round Trip Time (from Source to Destination and back) is

State the uses of groupware, State the uses of groupware With the use o...

State the uses of groupware With the use of groupware, users can easily do most of the office related management work, which otherwise would be extremely difficult. For instanc

Differentiate between ipv4 and ipv6, Question 1 Write short notes on Re...

Question 1 Write short notes on Reserved IP addresses and Special use IP addresses 2 Explain about the packet switching mechanism based on Virtual Circuit 3 Explain about

How to prepare the network- ccna, Prepare the Network Cable a network ...

Prepare the Network Cable a network that is similar to the one in the topology diagram.  You can use any current switch in your lab as long as it has the needed interfaces

What is a lan, What is a LAN? LAN stands for Local Area Network. It ref...

What is a LAN? LAN stands for Local Area Network. It refers to the connection among computers and other network devices that are located within a small physical location.

Wideband digital cross connects, Wideband Digital Cross Connects A SONE...

Wideband Digital Cross Connects A SONET  cross  connect  accepts  various  optical  carries  rates accesses the  STS signals  and switches at this level . it  is idally used at

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