Question about multi-threading in computer architecture

[SuperSusanoo]

Homework Statement

I don't quiet understand the concept of multi-threading in computer architecture. What I understand so far is that with multi-threading, instructions can be executed in a pipe-line without dependencies as long as they are not on the same thread. This doesn't make sense to me because even if they are in different threads, they still use the same registers, memory etc. I don't know if I am misunderstanding the concept of thread. Can someone clear this up please?

Homework Equations

The Attempt at a Solution

 

[Jonathan Scott]

Multi-threading does require switching between different register sets and other status information so that each thread appears to have its own independent execution environment. When it is implemented in hardware, the processor provides one or more additional register sets. When it is implemented in software, status information is saved and restored at thread switch points.
See Wikipedia for more details: https://en.wikipedia.org/wiki/Multithreading_(computer_architecture)

 

[berkeman]

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