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

Differentiate between public key and secret key encryption, What are the di...

What are the different between Public Key Encryption and Secret Key Encryption? Differentiate between Public Key Encryption and Secret Key Encryption: A cryptographic sys

Important terms related to systems, Purpose, Environment, Boundary, Inputs,...

Purpose, Environment, Boundary, Inputs, and Outputs are a number of important terms related to Systems. A System's objective/purpose is the reason for its existence and refe

Explain isdn addressing with a example, Explain ISDN Addressing with a exam...

Explain ISDN Addressing with a example. A sub address, though a part of the ISDN address, is not seems as an integral part of the numbering scheme. Sub-address is carried in a

Explain about workstations, Q. Explain about Workstations? The workstat...

Q. Explain about Workstations? The workstations are used for engineering applications like CAD/CAM or other types of applications which need a moderate computing power and rela

How is a valid user identifier accomplished, How is a valid user identifier...

How is a valid user identifier accomplished? A valid user identifier is accomplished within one or more of given ways: • Provide some password, which only user knows. • P

How do stubs work in a weblogic server cluster, Clients that join to a WebL...

Clients that join to a WebLogic Server cluster and look up a clustered object get a replica-aware stub for the object. This stub haves the list of available server instances that h

Describe about instruction set, Q. Describe about Instruction set? Inst...

Q. Describe about Instruction set? Instruction set is the boundary where computer designer and computer programmer see the same computer from various viewpoints. From the desig

Power and energy, Ask questiPower and EnergyQuestion 4Consider a processor ...

Ask questiPower and EnergyQuestion 4Consider a processor that runs at 2.5 GHz and 1 Volt. When running a given CPU-bound program,the processor consumes 100 W, of which 20 W is leak

Define flash memory, Define Flash Memory. It is an approach same to EEP...

Define Flash Memory. It is an approach same to EEPROM technology. A flash cell is based on a one transistor controlled by trapped charge just like an EEPROM cell.

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