Concurrently read concurrently write, Computer Engineering

Assignment Help:

Q. Concurrently read concurrently write?

It is one of the models derived from PRAM. In this model the processors access the memory locations simultaneously for reading and writing operations. In this algorithm that uses CRCW model of computation, n3 number of processors is used. Whenever a simultaneous write operation is executed on a particular memory location let's say m than there are odds of occurrence of a conflict. So the write conflicts it implies that (WR, RW, WW) have been resolved in the subsequent manner. In a condition when more than one processor attempts to write on same memory location, the value stored in memory location is always the sum of values computed by different processors.

Algorithm Matrix Multiplication using CRCW

Input// Two Matrices M1 and M2

For I=1 to n                                  //Operation performed in PARALLEL

      For j=1 to n                          //Operation performed in PARALLEL 

         For k=1 to n                    //Operation performed in PARALLEL

               Oij = 0;

               Oij = M1ik * M2kj

               End For

       End For 

End For

The complexity of CRCW based algorithm is O(1).


Related Discussions:- Concurrently read concurrently write

Digital communication systems, a pcm has the following parameters a maximum...

a pcm has the following parameters a maximum analog input frequency of 4khz maximum decoded voltage at the receiver of 2.55v minimum dr of 6db compute minimum sampling rate,minimum

Process of world wide web, Q. Process of World Wide Web? When you type ...

Q. Process of World Wide Web? When you type a URL in a web browser, this is what happens: 1. If URL contains a domain name, browser first connects to a domain name server an

Write a program that will solve a puzzle, You will write a program that wil...

You will write a program that will solve a version of the common newspaper puzzle \word search." In the puzzle you are given a grid lled with characters and a list of words to nd

Data parallel model - parallel programming model, In the data parallel mode...

In the data parallel model, many of the parallel work focus on performing operations on a data set. The data set is usually organized into a common structure, such as an array or a

Explain data warehousing, data warehousing Data warehouse means  ...

data warehousing Data warehouse means  Subject oriented Integrated Time variant Non-volatile collection of data for management's decisions. It is h

Instruction-execution cycle, Problem (a) Using a labelled diagram of ...

Problem (a) Using a labelled diagram of an Instruction-Execution cycle, describe how a CPU executes single machine instructions by referring to the five main operations.

Global fon, GlobalFon is an international communication company, which offe...

GlobalFon is an international communication company, which offers international prepaid calling cards. They introduced three different types of cards, (1) AsiaFon: is cheapest for

Explain the data dependency, Data Dependency It indicates to the situ...

Data Dependency It indicates to the situation in which two or more instructions share same data. The instructions in a program are able to be arranged based on relationship o

Eliminating hazards - computer architecture, Eliminating hazards of pipeli...

Eliminating hazards of pipeline -  computer architecture: We can delegate the work of eliminating data dependencies to the compiler, which can fill up in suitable number of NO

Operating-systems/Linux, sir, please give me an source code program for Hie...

sir, please give me an source code program for Hierarchial-Directory-system using any Unix/Linux

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