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

Distinguish between buffering and caching, QUESTION (a) Describe what y...

QUESTION (a) Describe what you understand by (i) "openness" and (ii) "Scalability" of a distributed system (b)What is the role of middleware in a distributed system? (c)

Definition of algorithm , Definition of  Algorithm  An algorithm is a ...

Definition of  Algorithm  An algorithm is a design or plan of obtaining a solution to a problem. The solution is presented by listing all steps in which they are carried out.

Project, Identify three factors to consider in determining the competitive ...

Identify three factors to consider in determining the competitive value of information technology. Justify the selected factors. Of the factors selected, determine if each fact

Flowcharts, what is a dry running of flow chart?

what is a dry running of flow chart?

Stack, How to write an algorithm to reverse the order of elements on a stac...

How to write an algorithm to reverse the order of elements on a stack s using two additional stacks

Uniform path cost search-artificial intelligence, Uniform Path Cost Search-...

Uniform Path Cost Search-Artificial intelligence A breadth first search will search the solution with the shortest path length from the first state to the goal state. Though, t

Evolution of erp , Evolution of ERP  The origin of using computers for ...

Evolution of ERP  The origin of using computers for business, traces the following line of story. Originally, they were designed to support the repetitive and time consuming fu

Algorithm, solve three given number in ascending order through algorithm

solve three given number in ascending order through algorithm

Flowcharting, Flowcharting: Flowcharting: A Flowchart is a graphical r...

Flowcharting: Flowcharting: A Flowchart is a graphical representation of an algorithm. It can be compared to the blueprint of a building. Just as a building contractor refers

Determine recursive c function computes, QUESTION (a) Give the two cond...

QUESTION (a) Give the two conditions required by a binary tree of depth d to be an almost complete binary tree. (b) Determine what the following recursive C function compute

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