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

Secondary storage - computer architecture, Secondary storage: Secondar...

Secondary storage: Secondary storage (or external memory) differs from primary storage in that aspect it is not accessible by the CPU directly. The computer typically uses its

Explain dos function call with one illustration, Explain DOS function call ...

Explain DOS function call with one illustration DOS function call In order to use DOS function calls, always place function number into register AH and load all other re

What is the difference between activity and sequence diagram, The following...

The following are the difference among Activity and Sequence Diagrams: A sequence diagram represents the way of processes implement in a sequence. For example, the order of op

The major underlying concepts of object orientation, Objects, messages, cla...

Objects, messages, class, inheritance and polymorphism are the major concepts of object orientation.

What are the various hazards encountered in pipelining, What is pipelining?...

What is pipelining? What are the various hazards encountered in pipelining?  Explain in detail. The major characteristics of a pipeline are: a) Pipelining cannot be exe

What is constrained-random verification, What is Constrained-Random Verific...

What is Constrained-Random Verification ? As ASIC and system-on-chip (SoC) designs continue to increase in size and complexity, there is an equal or greater increase in the si

Define the term grade of service, Define the term Grade of Service. Gr...

Define the term Grade of Service. Grade of Service: In loss systems, the traffic carried through the network is usually lower than the actual traffic offered to the network t

Predicates in propositional model, Predicates in propositional model: ...

Predicates in propositional model: The predicates take a number of arguments in which for now we assume are ground terms and represent a relationship between those arguments t

Implement that function using only nand gates, Q. Find simplified function ...

Q. Find simplified function F and implement that function using only NAND gates. 1.  F(A,B,C) = (A+B) (A'+B+C') (A'+B'+C') 2.  F (A,B,C,D) = A'B'C'+B'CD'+A'BCD'+AB'C' 3.

Microcontrollers (mcu), Main Objectives: Uploading codes into the mi...

Main Objectives: Uploading codes into the microcontrollers Interfacing between both microcontrollers via I 2 C Reading and writing into various ports on the MCU Int

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