OTOY Forums

Hello,

I'm running a two GPU setup right now (a Titan and a GTX780) and I noticed that if I let the render run using both GPUs and set a samples per pixel cap to let's say 20000 and then in the middle of the render I disable one of the GPUs the progress bar jumps back subtracting the samples computed bu the GPU that was disengaged from the render.

Is this just some sort of a visual glitch or is the information computed by that GPU really lost?

I'm just curious... And of course thanks in advance for any info on this

It's very annoying, but other than time (because renders take longer), I don't think you lose anything.

afair there once was a thread in the standalone forum mentioning that the samples calculated by a gpu that is switched off are indeed lost. the reason is most probably connected to the fact, that octane currently can't resume a render from a saved state, what'd be about the same task like combining samples currently "saved" in one gpu with the ones of another; don't ask me how then the actual combined result gets out of these samples rendered in different locations, but in the mentioned post it sounded quite logical...