>> GPUs aren't really SIMD, they're SIMT (single instruction multiple thread)

> False. If they were threads they'd have their own PC. They do not - only the warp has a PC.

They are using the term SIMT as it is normally used[1]. The "single instruction" part means that there is only one PC shared across multiple 'threads'.

[1] https://en.wikipedia.org/wiki/Single_instruction,_multiple_t...