Functions for message passing, Computer Engineering

Assignment Help:

Functions for Message Passing:

MPI processes don't share memory space and one process can't directly access other process's variables. Therefore they need some form of communication among themselves. In MPI environment this communication is in form of message passing. A message in MPI comprises the subsequent fields:

msgaddr: It can be any address in sender's address space and denotes to location in memory where message data begins.

count:  Number of amount of data items of message datatype comprised in message.

Source or dest: Rank of transmitting or receiving process in communicator.

Tag: Identifier for specific message or type of message. It permits the programmer to deal with the arrival of message in a systematic way even if the arrival of the message isn't orderly.

Comm.: Communicator. It is an object wrapping context in addition group of a process. It is allocated by system rather than user.


Related Discussions:- Functions for message passing

Explain about operand address calculation, Q. Explain about Operand Address...

Q. Explain about Operand Address Calculation? In actual machines effective address can be a register address, memory or I/O port address. Register reference instructions for ex

What is the relationship between clipping and repainting, When a window is ...

When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that needs repainting.

Common tasks to accomplish - artificial intelligence, Common Tasks to Accom...

Common Tasks to Accomplish: Once you've worried about what and why you're doing "AI", what has inspired you and how you're going to approach the job, then you just start to th

Single bus structures, Single BUS STRUCTURES : The Bus structure and ...

Single BUS STRUCTURES : The Bus structure and multiple bus structures are kinds of bus or computing. A bus is fundamentally a subsystem which transfers data amongst the compo

Which scheduling in cpu is allocate for least cpu-burst time, The schedulin...

The scheduling in which CPU is allocated to the process with least CPU-burst time is called? Ans. Shortest job first Scheduling wherein CPU is allocated to the process with lea

Name the abap/4 modularization techniques, Name the ABAP/4 Modularization t...

Name the ABAP/4 Modularization techniques. Techniques are:- Source code module. Subroutines. Functions.

Why floating point numbe process than integer, Why floating point number mo...

Why floating point number more difficult to represent and process than integer? In floating point numbers we have to show any number in three fields sign, exponent and mantissa

What is system programming, what is system programming? System programm...

what is system programming? System programming is the activity of implementing and designing SPs. System programs that are the standard component of the s/w of most computer

General concepts of links and association, General Concepts of links and as...

General Concepts of links and association A link is a conceptual or physical connection among objects for instance. Mathematically, you can define a link as a tuple which is a

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