Something tells me that those who use linux in HPC also have a team of programmers who modify the kernel in order to be used in those circumstances. What are you trying to say? That everything is OK and that the graphics drivers are good? Stop hallucinating. The drivers are shit and useless. Stop applauding this total failure in linux. And stop finding excuses for them. If they did their work properly we would have the official blobs running correctly without the companies needing to change and adapt drivers every month with every new X.org release.