Scientific computing and parallel computing C++23/C++26

[Guillaume Piolat]

On Saturday, 15 January 2022 at 09:03:11 UTC, Nicholas Wilson 
wrote:
>
> from what I understand unified memory allows the GPU to access 
> the host RAM with the same pointer. This reduces the total 
> memory consumed by the program, but to get to the GPU the data 
> must still cross the PCI-e.

Exactly. I remember that in 2013 "Unified Memory Access" on 
NVIDIA was underwhelming, performing worse than pinned transfer + 
GPU memory access.