Just to point out, as with the article that comes from the same site, where does it say official, it links to the same guys SAYING Nvidia said they'd help......
just think back what you're saying, Nvidia want to help port not Physx, but CUDA to AMD hardware... really? It's fanboy/trolling at it's best. With no one from AMD nor Nvidia commenting, just a guy saying Nvidia is trying to help port it's API to AMD, which would, errm, help AMD compete against them in the professional market for instance, Nvidia's highest margin market.
This is the thing the idea is utterly daft, and Nvidia has a history of basically lying to everyone particularly if it can look like the good guy.
Be honest, you think Nvidia wanted CUDA ported to AMD hardware, because that is how they were going to port Physx, by trying to port CUDA< and frankly the idea is just stupid.
As for Nvidia offering AMD Physx... well I'm offering you a free pizza, the only clause is at some time in the future I can charge you whatever I want for that pizza....... but it's free now.
Offered and sincerely offered with intention of going through with it, aren't the same. There is no reason to believe Nvidia was pulling anything other than a PR stunt, they flat out would never want CUDA on AMD cards, there is no question of this. If you never planned to seriously offer your tech, but you could look good by telling everyone you did, it's a bit of a no brainer.
Secondly, why is it you/most of the Nvidia guys think it's insane for Nvidia to jump on board Mantle while AMD controls it, but you think it's completely logical for AMD to jump on board Physx while Nvidia controls it?
The difference is hypocrisy, I in no way expect Nvidia to support Mantle while AMD run it, if AMD give work on it and pass it off for an industry standard, I think Nvidia should and shouldn't have any issue supporting it.
AMD has a history of developing and working on things like this then making them open, Nvidia has no history of this AT ALL, and considering Nvidia went out of their way to disable physx on Nvidia hardware if the main card was an AMD card I think it's patently clear to anyone even slightly level headed how much BS Nvidia pushed out over their intention to share Physx... they wouldn't even share it with people who bought Nvidia cards if it didn't meet their conditions.