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

K-nearest neighbor for text classification, Assignment 2: K-nearest neighbo...

Assignment 2: K-nearest neighbor for text classification. The goal of text classification is to identify the topic for a piece of text (news article, web-blog, etc.). Text clas

Explain vector processing issues in pipelining, Vector Processing   A...

Vector Processing   A vector is an ordered set of similar type of scalar data items. The scalar tem may be a logical value, an integer or a floating point number. Vector proce

Illustrate organisation of dram chip, Q. Illustrate Organisation of DRAM Ch...

Q. Illustrate Organisation of DRAM Chip? The given figure is a typical organisation of 16 mega bit DRAM. It displays a typical organisation of 2048 × 2048 × 4 bit DRAM chip. Me

What is the network service access policy, What is the Network Service Acce...

What is the Network Service Access Policy A high-level, issue-specific policy which defines those services that are allowed or denied from the restricted network. It also co

Segment combinations, Segment Combinations In 8086 assembler provides a...

Segment Combinations In 8086 assembler provides a means for combining segments declared in various modules. Some typical combine types are: 1.   PUBLIC: This combine directi

Microprocessor and interfacing, Write an ALP to count positve and numbers f...

Write an ALP to count positve and numbers from array.

State the encryption and decryption process with example, State the Encrypt...

State the Encryption and decryption process with example Encryption and decryption process in the Figure where Ram wants to send a confidential message to his friend Shyam. Ram

Diffeomorphism, A different smooth structure on R: Show that (U, f) given b...

A different smooth structure on R: Show that (U, f) given by U = R, f : x -> x3, is a local chart of the topological manifold M = R which is not a member of the standard smoo

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