Cycles: multi-gpu rendering doesn't know for sure which sample is being sampled,         so only report tile number is being processed
Cycles: multi-gpu rendering doesn't know for sure which sample is being sampled,
        so only report tile number is being processed

tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird,pyrochlore/cycles,tangent-opensource/coreBlackbird,pyrochlore/cycles,pyrochlore/cycles