CG Forge has a look at how to work with ACES in Houdini.

Lots of stuff is moving over to ACES and OCIO (openColorIO). If you work with Side FX Houdini, have a look at this concise quickstart guide from CG Forge’s Tyler Bay. The short tutorial helps us get up and running with ACES and OCIO quickly. 

“Implementing ACES in your workflows will make a huge difference to the quality of your renders.” Tyler says. This tutorial should be applicable for any render engine under Houdini, including Renderman, Redshift, Vray, Mantra, or any others.