Linux: 64-bit support, mmap, CUDA, everything is happy.
OS X: CUDA does not support 64-bit. ARGH.
Windows: VS2008 Express Edition doesn't have 64-bit compilers by default, Windows doesn't have mmap support!
*irritated*
The initial release may be Linux only for full support. This sucks, but I had no idea I'd run into these issues going to Windows/OS X.