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

Compute the different stages of kohlbergs theory, Problem 1 (a) Identi...

Problem 1 (a) Identify and briefly describe the possible roles of Codes of Ethics (b) Describe why is a code of ethics important to stakeholders. (c) Explain how should

Special theory of relativty, michelson-morley experiment-motivation and exp...

michelson-morley experiment-motivation and experimental setup

First order predicate logic-artificial intelligence, First Order Predicate ...

First Order Predicate Logic This is a more expressive logic because it builds on propositional logic by allowing us to use constants, predicates, variables, quantifiers and fun

What is time out mechanism, What is time out mechanism. If one unit is ...

What is time out mechanism. If one unit is faulty the data transfer will not be done. Such an error can be detected using time out mechanism which makes an alarm if the data tr

Memory that can be used in a 16-bit computer, What is the maximum size of t...

What is the maximum size of the memory that can be used in a 16-bit computer and 32 bit computer? The maximum size of the memory that can be used in a 16-bit computer is 2 memo

What are the values of the slack or surplus variables, Consider the followi...

Consider the following linear programming problem: Minimize:        70M + 40N Subject to:           3M + 7N ≥ 233                             10M + 2N ≥ 254

Determine if the product of two integers are even, If the product of two in...

If the product of two integers a and b is even after that prove that either a is even or b is even. Answer: It is illustrated that product of a and b is even so let a * b = 2n.

Menu driven program with following menu, Q.  Develop a Menu driven program ...

Q.  Develop a Menu driven program with following menu: 1.  Gray code 2.  BCD 3.  Excess-3 code 4.  Exit I/P must be a valid Binary number. Fractional numbers are all

Working of fully parallel associative processor, Q. Working of Fully Parall...

Q. Working of Fully Parallel Associative Processor? Fully Parallel Associative Processor: This processor accepts the bit parallel memory organisation. There are 2 kinds of this

Radius of curvature in differential calculas, find the radius of curvature ...

find the radius of curvature at the point (3,3) at a point x3+xy2-6y2=0?

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