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

Which memory can not be accessed randomly, Which of following can not be ac...

Which of following can not be accessed randomly DRAM, SRAM, ROM or Magnetic tape ? Ans. Magnetic tape cannot be accessed randomly; it can only be accessed sequentially.

What are vectored interrupts, What are vectored interrupts? To decrease...

What are vectored interrupts? To decrease the time involved in the polling process, a device requesting an interrupt may recognize itself directly to the processor. Then the pr

Prototyping and incremental development, a) Write  the main differences amo...

a) Write  the main differences among prototyping and incremental development.    b) Explain the commonality and main differences among agile approach and RUP.

Arterial puncture - specimen collection, Arterial puncture - Specimen colle...

Arterial puncture - Specimen collection: Arterial puncture:    this requires special skill and usually performed only by physician. The preferred site is radial arter

Commutatively of connectives - artificial intelligence, Commutatively of Co...

Commutatively of Connectives You will be aware from the fact that some arithmetic operators have a property that it does not matter which way around you give the operator input

Responsibilities of application layer, Application layer: It's the topmost...

Application layer: It's the topmost layer in OSI model, which allows the user to access network. This layer provides user interface for network applications like remote login, Wor

What is an operating system, What is an operating system? An operating...

What is an operating system? An operating system is system software which provides interface between hardware and user. The operating system gives the means for the proper uti

Example on plane, Q. If a plane is in the air also there is a fly flying in...

Q. If a plane is in the air also there is a fly flying inside the plane does the plane get heavier when the fly lands? Answer:- It is true that a fly puts weight on a plan

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