On: What's New in CPUs Since the 80s and How Does It Affect Programmers?

[Dylan16807]

So I had to look up SIMT: http://yosefk.com/blog/simd-simt-smt-parallelism-in-nvidia-g...

Batches of execution units all run the same opcode (or skip it in if/else constructs) but each one has its own register set.

As opposed to SIMD's simple, single, massively-parallel vector instructions.