Describe the difference between blocking message passing and non-blocking message passing.

Question

Question

Answer 1

Answer #1

Blocking message passing is done using MPI_Send() and MPI_Recv(). These functions do not return (i.e., they block) until the communication is finished. Whereas, non-blocking message passing is done using MPI_Isend() and MPI_Irecv(). These function return immediately even if the communication is not finished yet.
Blocking message passing should be used when it is sufficient, since it is somewhat easier to use. Non-blocking message passing is preferrable when necessary, for example, you may call MPI_Isend(), do some computations, then do MPI_Wait().

Answer 2

Similar Homework Help Questions

Explain the difference between blocking factor and treatment factor

Explain the difference between blocking factor and treatment factor
Write a solution to the Dining Philosophers Problem in Promela, using message passing (channels) to handle this. You mus...

Write a solution to the Dining Philosophers Problem in Promela, using message passing (channels) to handle this. You must use message passing, rather than relying on "await"/blocking. Once you have your solution written, use Spin to establish that for reasonable number of philosophers of various sorts that it is correct (safety and fairness) and has reasonable parallel performance (by comparing it to some other policies that are simple and easy to implement)
What is the difference between passing an argument by value and passing it by reference? Provide...

What is the difference between passing an argument by value and passing it by reference? Provide for examples to support your answer.

describe the difference in terms of reliability between repairable and non repairable items. use examples to...

describe the difference in terms of reliability between repairable and non repairable items. use examples to further explain your answers.
3. What is the major difference between gated and non-gated ion channels? Describe and draw an...

3. What is the major difference between gated and non-gated ion channels? Describe and draw an example of each type of gating signal. (6 marks)
describe the primary difference between consequentialist and non-consequentialist approaches to ethics. Choose one of the major...

describe the primary difference between consequentialist and non-consequentialist approaches to ethics. Choose one of the major theories associated with consequentialism: what objections might be made to this theory? Choose one of the major theories associated with non-consequentialism: what objections might be made to this theory?

Arc Gis question 2. Describe the difference between a feature attribute table and a non-spatial data...

Arc Gis question 2. Describe the difference between a feature attribute table and a non-spatial data (standalone) table. (20 Marks)
What is the difference between a flow-blocking delay and lack-of-work delay? How can each be reduced?

What is the difference between a flow-blocking delay and lack-of-work delay? How can each be reduced?
In your own words, describe the primary difference between consequentialist and non-consequentialist approaches to ethics. Choose...

In your own words, describe the primary difference between consequentialist and non-consequentialist approaches to ethics. Choose one of the major theories associated with consequentialism: what objections might be made to this theory? Choose one of the major theories associated with non-consequentialism: what objections might be made to this theory?

Describe in 3 or 4 sentences the difference between debt-based versus non debt-based fiat systems. Provide...

Describe in 3 or 4 sentences the difference between debt-based versus non debt-based fiat systems. Provide examples of both