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

Scope of expert system, The scope of the experts system is very limite...

The scope of the experts system is very limited. It cannot work outside the field it is being used. The users knowledge is required to adjust to new situation. To reduce

What is the advantage of dividing an email address, What is the advantage o...

What is the advantage of dividing an email address into two parts? The division of an e-mail address in two parts is significant since it achieve two objectives. First, the div

Explain the instruction decode, Q. Explain the Instruction Decode? Ins...

Q. Explain the Instruction Decode? Instruction Decode: This phase is performed under control of Control Unit of computer. The Control Unit determines the operation which is t

Illustrate basic strategy used in raid, Q. Illustrate Basic strategy used i...

Q. Illustrate Basic strategy used in RAID? Basic strategy used in RAID is to replace large capacity disk drive with multiple smaller capacity disks. Data on these disks is dist

Implementation of arithmetic circuits, Implementation of Arithmetic Circuit...

Implementation of Arithmetic Circuits for Arithmetic Micro-operation  An arithmetic circuit can be implemented by a number of full adder circuits or parallel adder circuits. F

Determine the signed numbers are used in binary arithmetic, When signed num...

When signed numbers are used in binary arithmetic, then which one of the notations would have unique representation for zero ? Ans. When signed numbers are utilized in binary ar

IT PMP project managemnet., Identify at least eight milestones for this pro...

Identify at least eight milestones for this project. Write a one-page paper describing each milestone using the SMART criteria?

Illustrate third generation computers, Q. Illustrate third Generation Compu...

Q. Illustrate third Generation Computers? The third generation has fundamental hardware technology: Integrated Circuits (ICs). To understand what are Integrated circuits let's

Associative memory organisations, Associative Memory Organisations The ...

Associative Memory Organisations The associative memory is organised in w words with b bits per word. In w x b array, every bit is known a cell. Each cell is made up of a flip-

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