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ethomaz said: My post... http://gamrconnect.vgchartz.com/post.php?id=5603723 I tried to explained what is hUMA (I never coded to a CPU/GPU with hUMA because it is a new thing in the industry). PS4 GPU does support hUMA at full state... MS did not support that because the eSRAM... the eSRAM is not coherent in Xbone and a hUMA enable system needs to have all shared coherent memory... so because the eSRAM MS was forced to create a new solution (based in hUMA? I don't know)... if that solution is better or not than hUMA I don't have the awnser because I don't even know if hUMA is that good but in terms of code you have a lot less to write with hUMA (better performance than a not shared memory? I think so). To make the thinkgs simples the Xbone use a difference memory system from everyting I already saw... Main DRAM pool: CPU/GPU shared memory coherence Xbone is a non-hUMA compilance... their solution is better than hUMA? I don't know. Are there any other comments that you have issue in that thread? About my graduations... I'm a low/high level software guy and not a hardware engineer but I wrote techinical articles about new hardware architectures years ago (expecificly Phenon, Core, Fermi, R600, R700, etc). |
Just to add reability to my posts...
AMD said again what I said here... PS4 uses UMA and Xbone eSRAM (there are no UMA with non-coherence eSRAM).
http://gamrconnect.vgchartz.com/thread.php?id=167349
