Demystifying multithreading and multicore

摘要

Is multithreading better than multicore? One might as well ask whether a diesel engine is better than four-wheel drive. The best vehicle for a given application might have one, the other, or both. Or neither. They are independent—but complementary—design decisions. With multithreaded processors and multicore chips becoming the norm, architects and designers need to understand their respective attributes, advantages, and disadvantages.