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

What is applying of an open source systems, What is applying of an Open Sou...

What is applying of an Open Source Systems?   No licensing issues No initial cost Speed of Access Openness and Transparency

Number of addresses in an instruction, Generally the Instruction Set Archit...

Generally the Instruction Set Architecture (ISA) of a processor can be distinguished using five categories:  Operand Storage in the CPU - Where are the operands kept other t

How do you turn off cookies for one page in your site, How do you turn off ...

How do you turn off cookies for one page in your site?  Use the Cookie. Abandon Property which Gets or sets the discard flag set by the server. When true, this property instruc

Representation scheme in artificial intelligence, Representation scheme in ...

Representation scheme in artificial intelligence: It is not hard to see why logic has been popular representation scheme in AI: In this way, It is easy to represent knowl

Explain about the prepurchase interaction activity, Explain about the Prepu...

Explain about the Prepurchase Interaction activity. Prepurchase Interaction: This interaction for consumers comprises three activities: • Product or service search and di

Structure of internet servers address, Structure of Internet Servers Addres...

Structure of Internet Servers Address Structure of an Internet server's address keyed into a client's software is as below: http://www.expertsmind.com Where: htt

What is the purpose of guard bits, What is the purpose of guard bits used i...

What is the purpose of guard bits used in floating point operations? The guard bits are the extra bits which are used to retain the in-between steps to enhance the accuracy in

Inherent addressing, Inherent addressing   Here the address is already b...

Inherent addressing   Here the address is already built in to the instruction i.e. inherent to the code     ABA  ; Add A to B and store the answer in A  Simple programs using

Explain deadlock, What is a deadlock? A deadlock is a situation that ca...

What is a deadlock? A deadlock is a situation that can increase when two units, A and B use a shared resource. Assume that unit B cannot complete its task unless unit A complet

Explain the concepts and definitions of e-commerce, The Internet has emerge...

The Internet has emerged as a major worldwide distribution channel for goods, managerial, services, and professional jobs. It has impacted market economics and industry structure,

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