Question

What is the distinction between instruction-level parallelism and machine parallelism?

Answer 1

• Instruction-level parallelism exists when instructions in a sequence are independent and thus can be executed in parallel by overlapping. Machine parallelism is a measure of the ability of the processor to take advantage of instruction-level parallelism. 
• Machine parallelism is determined by the number of instructions that can be fetched and executed at the same time (the number of parallel pipelines) and by the speed and sophistication of the mechanisms that the processor uses to find independent instructions.