Timing in mpi program, Computer Engineering

Assignment Help:

Q. Timing in MPI program?

MPI_Wtime ( ) returns lapsed wall clock time in seconds because some random point in past. Elapsed time for program section is given by difference between MPI_Wtime values at starting and end of process. Process clocks aren't necessarily synchronised, so clock values aren't necessarily comparable across the processes and care should be taken in determining overall running time for parallel program. Even if clocks are openly synchronised variation across clocks still can't be expected to be considerably less than round-trip time for zero-length message between the processes.


Related Discussions:- Timing in mpi program

Define various system, Define various system? Single job system: Only...

Define various system? Single job system: Only one program may be run at a time, and therefore only one person might be work on a machine at one time.  Multi job system:

Explain the general model for the translation process, Write down the gener...

Write down the general model for the translation process. For the translation process the general model can be represented as given here:

Describe language processing activities, Describe language processing activ...

Describe language processing activities? There are two different kinds of language processing activities: a. Program generation activities b. Program execution activities

Illustrate what is universal law of universal gravitation, Q. Illustrate wh...

Q. Illustrate what is the universal law of universal gravitation? Answer:- Declaration that any particle of matter in the universe attracts any other with a force varying

Explain space switching, Explain Space Switching. Space Switches: Con...

Explain Space Switching. Space Switches: Connections can be made in between outgoing and incoming PCM highways by a cross point matrix of the form demonstrated in figure. How

What is data in computers, Q. What is data in computers? In modern digi...

Q. What is data in computers? In modern digital computers data is signified in binary form by employing two symbols 0 and 1. These are known as binary digits or bits however da

Super ASCII string checker, In the Byteland country a string "s" is said to...

In the Byteland country a string "s" is said to super ascii string if and only if count of each charecter in the string is equal to its ascci value in the byteland country ascii co

Ai6301 - building blocks and techniques used in ai, The princess (or princ...

The princess (or prince if you're female) has been captured by the Evil Dragon and held prisoner in a tower. The tower is also surrounded by a maze to keep out the riff-raff. You

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