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

Explain the various interface circuits, Explain the various interface circu...

Explain the various interface circuits.  An I/O interface having of circuitry required to connect an I/O device to computer bus. One side having of a data path with its associa

Instruction set, Instruction set: The architecture gives instructions for m...

Instruction set: The architecture gives instructions for multimedia operations and floating point operations. The Itanium supports various bundle mappings to allow for more inst

Explain client server model, Explain Client Server Model. In the client...

Explain Client Server Model. In the client- server model, communication usually takes the form of a request message from the client to the server asking for several works to be

Algorithem, for calculating simple interest

for calculating simple interest

Object oriented and structured oriented programming, What is the difference...

What is the difference among object oriented and structured oriented programming? Ans) ? Object Oriented means programme will be there in terms of Class and Object connection w

Script in multi user mode, What Component of LoadRunner would you use to pl...

What Component of LoadRunner would you use to play Back the script in multi user mode? Ans) The Controller component is used to playback the script in multi-user mode. This is c

Main drawbacks of cd-roms, Q. Main drawbacks of CD-ROMs? The main drawb...

Q. Main drawbacks of CD-ROMs? The main drawbacks of CD-ROMs are: It is read only thus can't be updated Access time is longer than that of magnetic disks. Very

Two properties of recursion, Two properties of recursion are:- 1. A sm...

Two properties of recursion are:- 1. A smallest, base case that is processed without recursion and acts as decision criterion for stopping the method of computation and 2.

Optical storage - computer architecture, Optical storage - computer archite...

Optical storage - computer architecture: Optical storage, the distinctive Optical disc, stores information in deformities on the surface of a circular disc and reads this info

Example of input a single digit, Q. Example of Input a Single Digit? I...

Q. Example of Input a Single Digit? Input a Single Digit for example (0,1, 2, 3, 4, 5, 6, 7, 8, 9)  CODE SEGMENT   ... ; Read a single digit in BL register with ech

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