[supar]

I was hoping for some more meaty details about what exactly is "subpar" about nvidia on Linux (except the closed nature of the driver).

In terms of GL implementation, the nvidia driver has everything you would expect. If you use GL directly, it is one of the most conforming implementations I've been using (supporting "deprecated" stuff like bitmap operations, line and polygon aliasing, imaging extensions, all GL revisions, pretty much all ARB extensions, etc). Everything works from Cg to CUDA to OpenCL to VDPAU. There is really no feature gap between windows and linux.

I've never compared OpenCL to CUDA performance really, but switching to OpenCL for new projects is something I'm planning to do.

My mayor problem, really, is that CUDA is locked to specific versions of GCC, and that is even of a bigger issue than the closed nature of the driver itself.