2x6 gtx1080 cluster

hope i post this question in the right forum, if not please move it Image may be NSFW.
Clik here to view.

i got two identical systems:

opsystem: ubuntu 14
motherboard: ASUS Z9PE‑D8 WS
gpu: 6x gtx1080 FE
psu: evga gold
custom close frame (i can upload pictures if you guys wish to see 12 cards in a row Image may be NSFW.
Clik here to view.
fan: cloud x7

i would like to make a cluster out of this two systems, is there any tutorial how to do that under ubuntu ? maybe load balancing also ? any research papers would be greatly appreciated