By Mike Seymour:

“If you wanted a 1000 GPUs on a single process, Octane scales linearly with each GPU you added,” explains Jules Urbach, OTOY chief executive officer. “We are looking at thousands and down the line tens of thousands of GPUs for offline rendering – that will be one way that it will work. There will also be a live version, there are iterations we have shown with Autodesk of Max already running Octane without any local GPU and that is one of our core competencies,” he adds.

Not a Nuke thing but worth a read.