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

Autonomous rational agents - artificial intelligence, A utonomous Rational...

A utonomous Rational Agents: In many cases, it is not accurate to talk about a particular program or a particular  robot, as the combination of and software and hardware in so

Find shortest path in network, Find shortest path from node 1 to node 10 in...

Find shortest path from node 1 to node 10 in the network shown in figure, also find shortest path from node 3 to node 10. Please write all steps to finding shortest path mechanism

Explain application and system software, Question 1 Explanation of impact ...

Question 1 Explanation of impact of Information Technology on governments Question 2 Explain application and system software Question 3 Briefly explain real time a

Assignment, Hi I have an assignment can you help me ?

Hi I have an assignment can you help me ?

Describe the binary search algorithm, QUESTION 1 Describe the binary se...

QUESTION 1 Describe the binary search algorithm using an example of your own. QUESTION 2 (a) By showing all your workings, give a big-O estimate for f(x) = (x + 1)lo

Basic description of a computer system, The main components of a computer ...

The main components of a computer system at a basic level Computer System We call computer system to the whole configuration of a computer, as well as the peripheral units and the

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