Difference b/w hyper threading and multithreading?

multithreading cpu-architecture hyperthreading
sp497 picture sp497 · Jan 3, 2013 · Viewed 16.2k times · Source

I was wondering if someone could explain me the difference b/w these two ? Has it something to do with intel hardware architecture (HT) ?

Answer

Nathan Binkert picture Nathan Binkert · Jan 7, 2013

Hyperthreading is a hardware thing and Intel branding. Most other people call it Simultaneous Multithreading (SMT). To the programmer, two hyperthreads look like two CPU cores. On the hardware side, multiple hyperthreads share a single core. (In the case of intel, there are two hyperthreads per core).

Multithreading (or multithreaded programming) is generally considered the concept of using more than one thread context (instruction pointer, registers, stack, etc.) in a single program. (Usually in the same process or virtual address space).

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