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 about the e-commerce over extranets, Explain about the e-commerce o...

Explain about the e-commerce over extranets. Extranets are regarding “joining up” the supply chain-suppliers, distributors, resellers and customers are enabling business-to bus

Illustration to demonstrate design of sequential circuits, Q. Illustration ...

Q. Illustration to demonstrate design of sequential circuits? Let us take an illustration to demonstrate above process. Suppose we want to design 2-bit binary counter employing

What is system conception, What is system conception? It deals with gen...

What is system conception? It deals with genesis of an application and formulating tentative needs. The purpose of the system conception is to defer details and understand what

Hiring problem algorithm, Consider the Hire Assistant problem. We interview...

Consider the Hire Assistant problem. We interview n candidates and always hire the best qualified so far. Let n = 5 for our example. Find the probabilities that we hire exactly 1 t

Stata about the magnetic stripes, Stata about the Magnetic stripes  Th...

Stata about the Magnetic stripes  These comprise information/data stored on magnetic material often on the back of a credit/debit card; the information is automatically read b

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

Explain the register transfer language, Explain the Register transfer langu...

Explain the Register transfer language Register transfer language means there must be data flow between two registers and logic is in between them for end registers data must f

What is the draw back of micro programmed control, What is the draw back of...

What is the draw back of micro programmed control? It leads to a slower operating speed because of the time it takes to fetch microinstructions from the control store.

Determine the uses of defparam, Using defparam Parameter values can be ...

Using defparam Parameter values can be changed in any module instance in the design with keyword defparam. Hierarchical name of the module instance can be used to override para

What are the advantages of code optimization, What are the advantages of co...

What are the advantages of code optimization? Code optimization tends at enhancing the execution efficiency of a program. It is achieved in two manners. Redundancies in a progr

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