CUDA 1.1 has some new features and sample programs in the SDK including:
• NVIDIA standard display drivers will now include the CUDA dll. This is just starting to roll out with all new display drivers, so for now we’ve still included drivers in this beta release.
• Having moved into the standard display driver caused us to rename cuda.dll to nvcuda.dll. The other dll’s included with the CUDA toolkit account now rely on this. Even with this change, most binaries built with 1.0 work fine just running on 1.0. We’ve seen one case where a product specifically checked for the existence of “cuda.dll” and that was easy to work around.
• It’s fine for you to redistribute the dll’s from the CUDA toolkit and SDK so your customers can just use a (newer) standard NVIDIA driver rather than having to install a CUDA-specific one. We just require that when you install our dll’s with your product that you do not install them in a common area - but rather in your own subdirectory. And do not redistribute nvcuda.dll.
• Support for WinXP64
• More signals in profiler
• Graphics interoperability with CUDA across Multiple GPUs is enabled. Please note that this is not as efficient as it could be. Data is transferred back through the host in this release.
• New event management features particularly useful for the new async and stream management
• Asynchronous execution: new memory copy calls with Async suffix return control to the application without waiting for completion (see new asyncAPI SDK example and 1.1 Programming Guide)
• Alpha feature for supporting overlapped memory copies concurrent with kernel execution using new stream management interface. There are specific limitations to this and it will only do overlap on 1.1 architectures (g84/g86/g92), though it will revert to serial operation on 1.0 architectures. See new simpleStreams SDK example and 1.1 Programming Guide). We’re still tuning this, so this capability will remain a beta feature even as CUDA 1.1 becomes a production release.
• There are now 50 source code examples in the SDK.


http://forums.nvidia.com/index.php?showtopic=51026