What does "" here mean? I looked it up in a dictonary and foud that it means "small". But I can't understand it in this sentence. Can you please explain it?
"One possible way out is to pay considerable attention to the grain size of all computations. Starting up a small computation remotely, such as adding two integers, is rarely worth it, because the communication overhead dwarfs the extra CPU cycles gained."
"dwarfs" is a verb here. If X dwarfs Y, it means that X is comparatively very much larger than Y.
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"dwarfs" is a verb here. If X dwarfs Y, it means that X is comparatively very much larger than Y.