GB is CPU+2xGPU.
GH is readily available for anybody at 1.5 dollars per hour on lambda; GB is harder and we're just going to begin to experiment on it.
Re:Prefix sum: 20 GB/s (2.6x baseline)
by ashtonsix on Tuesday October 14, 2025 @03:47PM
(#45583955)
Each Grace CPU has multiple cores: https://www.nvidia.com/en-gb/data-center/grace-cpu-superchip
This superchip (might be different to whichever you're referring to) has 2 CPUs (144 cores): https://developer.nvidia.com/blog/nvidia-grace-cpu-superchip...
GB/GH are actually ideal targets for my code: both architectures integrate Neoverse V2 cores, the same core I developed for. They are superchips with 144/72 CPU cores respectively.
The perf numbers I shared are for one core, so multiply the numbers I gave by 144/72 to get expected throughput on GB/GH. As you (apparently?) have access to this hardware I'd sincerely appreciate if you could benchmark my code there and share the results.