Thomas Fjellstrom <tfjellst...@shaw.ca> writes:

> Hardware context switches aren't free either. 

FWIW, SMT has no "hardware context switches", the 'S' stands for
simultaneous: the operations from the different threads are travelling
simultaneously through the CPU's pipeline.

You seem to confuse it with 'CMT' (Coarse-grained Multi Threading),
which has context switches.

-Andi
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