Arnold 4.0.16 added photometric lights, which can use IES light profiles.
Arnold does not support IES lighting profiles [generally, IES profiles are not used a lot in film/VFX work]. Most of the time, you can do what an IES light does by using an appropriate gobo (aka a slide projector). For example, SHED used gobo lighting in place of IES on their recent IGA Aide Gourmet spot.
SHED created their own gobo filters to create a similar look to IES lights
The Noise shader can access the Pref coordinates to prevent swimming. But for other procedural textures, you’ll have to take a different approach (unless you whip up [a relatively simple] shader to get the Pref coordinates). Here’s one way, using ICE to store UVWs in a CAV, and then a Vertex Color node in the render tree.
First, create a Spatial projection and a Color at Vertices (CAV) property on your mesh.
Then build an ICE tree that gets the projection UVWs and stores them in the CAV.
In the render tree, use a Vertex Color to get the UVW information from the CAV, and feed that into the texture coordinates of the procedural texture.
You can use relative paths in Maya (like “/Dog.ass” in the Path box of the StandinShape attributes). It can be relative to the project, or relative to the Procedural Search Path.
An exported ASS file, on the other hand, always has the full absolute path.
Arnold Support Corner 