Assuming a computer has a single processor and a single core with no support for parallel...
Assuming a computer has a single processor and a single core with no support for parallel execution, explain why running a multi-threaded program would show no performance improvement. Would inter-process communication be relevant in such a context?
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Answer)
When a computer has a single processor and is single cored then while running the multi thread program context switching would be needed but when the scheduler would choose the upcoming process to be executed it will have to check for the current register's so as to backup the register's state and also in the upcoming process would also need the current state or switch pages or load additional data's which is not feasible when one processor and single core. Hence the efficiency would not be improved but same or even less due to load.
Inter process communication with time slicing or scheduling can help to some extent in some scenario's.
Hope this answer helps. :) Happy to help.
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