Operating system problems, computer science, Basic Computer Science

Operating system problems, computer science, Basic Computer Science

Assignment Help:

1. In discussing software algorithms for mutual exclusion, we noted that optimizing compilers and out-of-order execution by processors could invalidate most of these algorithms because such “optimization” does not take into account that the value of a shared variable can be changed by something other than the immediately evident code. This overly-simplistic characterization also happens with I/O devices, especially simple programmed I/O where data or control register contents changes as a result of the state of the device, not as a consequence of execution of processor instructions, as well as with clocks where the current time register changes continually. It also happens when DMA is used to input blocks of data, which is slightly more complex because the addresses whose value changes are not evident literally. What does this imply about device drivers?

Related Discussions:- Operating system problems, computer science

Netbooks, Netbooks: Netbooks are special type of Laptop which is very ...

Netbooks: Netbooks are special type of Laptop which is very light and small. Due to its size and weight it is very portable and one may carry it very easily. Dissimilar to La

Problem occurs during pipelining , While pipelining can cruelly cut the tim...

While pipelining can cruelly cut the time taken to execute a program, there are troubles that cause it to not work as well as it possibly shall. The three stages of the instruction

Multiple queues, I need to create mulitple queues assignment that run concu...

I need to create mulitple queues assignment that run concurrently. It is like a queue simulation with number of checkouts with a random probability of clients, joining any one

Finite Automata, (S**)*=S*** is this set bigger than S*??

(S**)*=S*** is this set bigger than S*??

Open systems interconnection, Open Systems Interconnection (OS1): As t...

Open Systems Interconnection (OS1): As there are many different protocols for LANs and WANs, communication between two different systems can be difficult. The International St

ExtremeWhether.html, How to crete a web page name esp.html that allows user...

How to crete a web page name esp.html that allows users to conduct an ESP test

What is the importance of using digital certificates, QUESTION a) Crypt...

QUESTION a) Cryptography is a set of techniques and mathematical algorithms. Describe four important areas where cryptography must be applied b) What is the importance of us

Assembly Language Project, Our instructor gave us a project in making a mec...

Our instructor gave us a project in making a mechanical game or simple device using assembly language, can anyone give me a an example of a project description for our proposal?

Explain the tcp/ip reference model with diagram, Question 1 Define the fol...

Question 1 Define the following terms 1) Analog Signals and Digital Signals 2) Composite signals Question 2 Define the following terms

Write down dijkstra''s algorithm, QUESTION (a) Write down the Update ...

QUESTION (a) Write down the Update Step in the Dijkstra's algorithm explaining its complexity. (b) Propose a Generic Algorithm for Depth-First Search Algorithm, assuming

Write Your Message!

Name

Email id

Message

Verfication Code

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!

Submit Assignment

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