Need help with good and in-depth answers to these 7 questions

QuestionsCategory: QuestionsNeed help with good and in-depth answers to these 7 questions
Stina asked 6 months ago

Need help with good and in-depth answers to these 7 questions
* Question 1
You have one implementation of a program with a running time of six
(6) time units and another with a running time of four (4) time units
if both programs have the same input. What is the speedup of the
faster implementation? Present all your calculations.
* Question 2
What are the main steps in writing a parallel program, according to
Foster?
* Question 3
Measuring execution time can be challenging. List some problems you
may face when measuring time in a program.
* Question 4
Why do we need to start an MPI program with MPI_Init and end it with
MPI_Finalize?
* Question 5
In MPI, what is a communicator?
* Question 6
What is the point of collective communication in MPI? Can’t all
possible communication patterns be implemented with point-to-point
communication primitives?
* Question 7
In MPI, there is an MPI_Barrier primitive? What does it do? Isn’t it
odd for MPI to have such a primitive? In what situations is it useful?