HoloDust on 16 March 2013
| sergiodaly said: look at it like this... the 8GBs in the PS4 will work like this... a game is running, 1 GB is for OS, 3 GBs are for the CPU as system RAM and the rest is for the GPU to use as VRAM.... |
Actually, with HSA features, there is no need for system to take so much memory:
- CPU and GPU now access the memory with the same address space. Pointers can now be freely passed between CPU and GPU.
- GPU can now access and cache data from coherent memory regions in the system memory, and also reference the data from CPU's cache. Cache coherency is maintained.
- GPU can take advantage of the shared virtual memory between CPU and GPU, and pageable system memory can now be referenced directly by the GPU, instead of being copied or pinned before accessing.
