What is parallelism and how is it applied in modern computer systems?

Parallelism refers to the concept of performing multiple tasks simultaneously in a computer system. It is a critical technique used in modern computer systems to improve performance by allowing multiple tasks to be executed in parallel. Parallelism can be applied at different levels of the computer system, including at the instruction level, thread level, and process level. At the instruction level, parallelism can be achieved through techniques such as pipelining and superscalar execution. Pipelining involves breaking down the execution of an instruction into multiple stages and executing multiple instructions simultaneously, while superscalar execution involves executing multiple instructions simultaneously by using multiple execution units. At the thread level, parallelism can be achieved through the use of multithreading, whi....