3 ms·
2-cycle latency for division seems extremely unlikely. From the instruction tables it seems that firestorm has 7-9 cycles latency SDIV (which is excellent). It
by gpderetta 3y ago
2-cycle latency for division seems extremely unlikely. From the instruction tables it seems that firestorm has 7-9 cycles latency SDIV (which is excellent). It also has an impressive 2-cycles reciprocal throughput.
- jandrewrogers 3y agoQuite possible. I am not confident Apple Silicon has 2-cycle div latency, that seems improbably fast to me, but I had heard some reasonably well-sourced rumors to that effect. I have not measured it myself. Even at somewhat higher latency it is still fast enough to not be worth optimizing around in most cases, which is great.