On Wednesday, November 9, 2022 at 12:38:51 AM UTC-7, Fernando Oleo Blanco wrote:
> Hi Jerry,
> taking the results from Geekbench:  for your current MacBook and 
> for the M1 MacBook from 2021; the results show that single core
> performance of the M1 MacBook Pro is about 6.4 times faster.
That's a great site. Thanks. Clicking around a bit I was able to find separate comparisons for single-core floating point and the speed-up is 5.2.
> However, notice that it is running on Aarch64 natively for the M1.
GNAT compiles to Aarch64 now, right?
> Nonetheless, you can run x86 programs with little performance hit thanks
> to Apple Rosseta.
"little performance hit" compared to Intel code running on Rosseta versus Intel silicon or compared to native ARM? And I wonder how long until Apple takes away Rosseta this time? Last time it was two OS updates and then, poof, gone.