This Full HD video is showing how to render ultra high resolution image in LightWave 3D Layout with VirtualRender and Kray renderers.
https://www.youtube.com/watch?v=8UpE1mQQ2hw
It's using VirtualRender
http://virtualrender.trueart.eu
and Kray Tracing
http://www.kraytracing.com
This image is showing rendering using 30-40 render nodes in renderfarm simultaneously using Kray to render single frame:

Best Regards!