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

Computer programming, outline and explain in detail any 10 application area...

outline and explain in detail any 10 application areas of vb.net

Digital wireless telephone networks, Mobile telephone networks started with...

Mobile telephone networks started with analog technology. Analog cellular networks were known as first generation (1G) networks. Such networks had limited capacity, and were subjec

Spreadsheet to provide a business solution, Gareth's Gardens is a small fir...

Gareth's Gardens is a small firm that specialises in planning and laying new gardens. A particularly popular garden plan consists of a patio and lawn, together with a circular pon

Hardware basics, HARDWARE BASICS In the foregoing section of this Unit...

HARDWARE BASICS In the foregoing section of this Unit, an attempt has been made to explain to you the historic perspective relating to the development of computer from its ear

MIS, information system providors

information system providors

General considerations for search - artificial intelligence, General Consid...

General Considerations for Search If we may specify the starting state, the operators and the goal check for a search problem, then we know from where to start, how to move and

Computer theory, convert RE (ab) int FA

convert RE (ab*)* int FA

What is vpn? explain the vpn protocols, Question 1 What is IT auditing? Di...

Question 1 What is IT auditing? Discuss the three phases involved in the IT auditing Question 2 List and explain the two types of load balancing methods Question 3

Data structures, let me know if you can do this assignment and how long it ...

let me know if you can do this assignment and how long it takes

Command Line Arguments, You may have seen, as, that many programs can be ru...

You may have seen, as, that many programs can be run so that they give you with some basic information concerning how they should be run. Python permits you to do this with -h: $ p

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