Optix Prime load balancing across GPUs

If I set the devices at the beginning of my ray-tracing application, does (/how does) Optix Prime balance or distribute the ray-tracing query workload across multiple GPUs?

Or is it better to manage GPU sharing manually instead of relying on Optix Prime to do it?11

We support both approaches in OptiX Prime. We expect that most high-end renderers will want to manage multi-GPU themselves, while most other applications will be fine to let OptiX Prime do it.