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 over-clocking, Overclocking is the process of making a computer or ...

Overclocking is the process of making a computer or component operate faster than the clock frequency particular by the manufacturer by modifying system parameters. One of the most

Explain remote procedure call, Explain Remote Procedure Call. RPC (Remo...

Explain Remote Procedure Call. RPC (Remote Procedure Call) : The facility which was created to help the programmers write client -server software is termed as Remote Procedu

Risc architecture - computer architecture, RISC  architecture - computer a...

RISC  architecture - computer architecture: What is reduced regarding it? The answer of this question is that to make all instructions the equal length the number of bits that

Input-output-processor interconnection network (iopin), Input-Output-Proces...

Input-Output-Processor Interconnection Network (IOPIN) This interconnection network is used for communication between I/O channels and processors. All processors commune with a

Describe the horizontal frequency or cycle, Q. Describe the Horizontal Freq...

Q. Describe the Horizontal Frequency or cycle? Horizontal Frequency: The time to scan one line connecting the right edge to left edge of the screen horizontally is known as t

Explain about wide area network, Q. Explain about Wide Area Network? Wi...

Q. Explain about Wide Area Network? Wide Area Network (WAN) usually refers to a network, which covers a large geographical area as well as use communications subnets (circuits)

What is ''LRU'' page replacement policy, 'LRU' page replacement policy is ?...

'LRU' page replacement policy is ? Ans. Least Recently Used.

System development and data administration, Q. System Development and Data ...

Q. System Development and Data Administration? System Development: In traditional business systems analysts and programmers are organized into permanent teams which support i

Define external layer, Define external layer? The external layer is the...

Define external layer? The external layer is the plane at which the user sees and interacts with the data, that is, the data format in the user interface.  This data format is

Explain intermediate representation, a. Explain Intermediate Representation...

a. Explain Intermediate Representation? What are the desirable properties of Intermediate Representation? b. Explain Grammar of a language. Identify the dissimilar classes of gr

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