Cuda half and OpenEXR half types interesects

[edubois]

The half type is already defined in the file cudafp16.hpp: typedef __half half;

I'm not sure we can ask nvidia to change this :S but maybe it's possible on the OpenEXR side.

Just wanted to notify you as cuda is pretty used.

[meshula]

https://github.com/AcademySoftwareFoundation/openvdb/pull/927

[lgritz]

Do I recall that this has been addressed in 3.0? Can we close?