On 17/10/2020 16:51, Michael Laufer wrote:
> Do you know if there can expect any performance gains by compiling
> Openmpi with cuda support?
In general the CUDA awareness only helps cases which are heavily strong
scaled, where performance is limited by the interconnect. If, whilst
running a simulation, nvidia-smi reports that all four GPUs are close to
100% utilisation then this is unlikely to be the case.