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

Network layer - computer network, Network Layer The  internet  network...

Network Layer The  internet  network  layer is  responsible  for moving  network  layer  packets  known data grams  from one host to another. The internet transport  layer pro

Data sharing - fundamentals of networks, Data Sharing One of the most ...

Data Sharing One of the most important uses of networking is to allow the sharing of data. Before networking was common an accounting employee who wanted to prepare a report f

Network performance measured by delay and throughput, Q. Network performanc...

Q. Network performance measured by delay and throughput ? delay versus load Delay is composed of? Throughput v/s network load

How intranet is different from internet, How Intranet is different from Int...

How Intranet is different from Internet? Generally an Intranet is different from an Internet in the following ways: i. Intranet is a network within the organisation whereas

Importance of implementing a fault tolerance system, What is the importance...

What is the importance of implementing a Fault Tolerance System? Are there limitations? A fault tolerance system makes sure continuous data availability. This is done by elimin

What are general middleware, It consists of the communication stacks, distr...

It consists of the communication stacks, distributed directories, authentication services, network time, RPC, Queuing services along with the network OS extensions like the distrib

Lan- wan network module expansion slot, WAN interface card(WIC) slots T...

WAN interface card(WIC) slots Two fixed WIC slots are present in  2600 series router except 2691. It has contained 3 WIC slots. Network Module Expansion Slot( NM) slot

Metrics are used by routing protocols, What metrics are used by routing pro...

What metrics are used by routing protocols to verify the best path?

Internet routing hierarchy, So how packets do determines their way across t...

So how packets do determines their way across the Internet? Does each computer linked to the Internet know where the other computers are? Do packets just get 'broadcast' to every c

What do you mean by modems, Q. What do you mean by Modems? Telephone M...

Q. What do you mean by Modems? Telephone Modems - A telephone line has a bandwidth of approximately 2400 Hz for data transmission

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