What is the correct way to do an OpenGL render on ACES?
My colors always end up not looking the way I expect. Follow-up question, but how are people feeding ACEScg renders through imagemagick in TOPs? I had luck for a while doing a conversion using an ICC profile I made to convert from acescg to srgb, but recently that has also stopped working the way I expect.

We haven't had issues with OpenGL renders to EXR and ACES. Is the rest of the color management set up properly in Houdini? Might want to post more detail about how you have things set up and what you are rendering to.

We moved away from Imagemagik as much as possible for this very reason. But between Open Image IO in TOPs and COPs (both have full support for ACES), I haven't found much I can't do that IM did.