A lot of open source developers use Ubuntu / Debian as their main development platform eventhoug I agree that RedHat might often be deployed on production servers.
Does AMD plan to support Ubuntu as one the official distribution for the Stream SDK? That would make it much easier for developers of open source numerical computing libraries port their work to support AMD Stream as optimized backend.
What about a source based release of Brook+ and CAL? I heard that Brook+ is meant to be a temporary fork of the Brook open source project. Will cal be released as an open source project too some day?
Releasing the source of the SDK would make it easier to let the distribution packagers maintain and support packaging issues for various distributions themselves and ensure a wide acceptance of Stream SDK over CUDA in the open source developer community. A public access to the source code would probably help advanced users make more helpful bug reports and help the Stream SDK developers enhance the quality of the project to catchup with CUDA.