I didn't get that at all - to me this looks like a very smart investigation into instruction latency and the precise mechanics of out-of-order execution (no ref

I didn't get that at all - to me this looks like a very smart investigation into instruction latency and the precise mechanics of out-of-order execution (no reference made to speculative or branch prediction, though?) without looking at what the instructions do in detail. GPUs can certainly do bulk integer arithmetic but most use cases prefer FP. Maybe for DSP fixed-point is ideal.