Hello,
Have made an HDA using just a polyreduce node with a torus as input. I created the subnet by selecting the polyreduce node only, promoted some attrs, and saved the asset to disk. Everything looks good. I can load the asset in Maya, however in Maya I can't get the Asset to do any processing. I can connect up a mesh just fine, but the output mesh doesn't change when altering the promoted parameters.
I wonder if it's a licensing thing? I'm on the indie non-commerical license. Houdini asset extensions default to .hdanc which as I understand it aren't supported with Houdini Engine for Maya. I can manually change it to write .hda or .hdalc, but it seems no actual mesh processing takes place inside Maya