What Is a Multiprocessor Effect?

There’s only so much work a single processor can perform. Once that limit is reached, the next logical step is to run that work across multiple processors. The multiprocessor effect is best explained by an example.

If one processor can do X amount of work, 16 processors all working together cannot do an amount of work equal to 16 times the work. In reality, it drops to around 12 times the work. There’s a bunch of other stuff that has to happen to allow those 16 processors to successfully work together.

For now, let’s just say there is a certain amount of measurable overhead (e.g., coordinate storage, data access) required to keep everyone running safely across all 16 processors.


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