ND said Uncharted used all the SPU's of PS3's cores.They just put them to work.They used all 8 of them.
But they mainly only utilized 2 SPU's.The other 56 SPU's were not fully utilized.
No other dev till now has even used more than 3 SPU's,forget of fully utilizing them
They used 6, which is the max available to developers.
8 SPEs on the CBE die, one inactive to allow for higher chip yields, one reserved for the PS3 OS, 6 remaining for game data processing.
Does anyone know exactly what the SPE's are capable of.
I mean are they totally independant and able to access the system or are they just sub processors which use the main core for scheduling and essentially just run encapsulated processes and submit the results to the main core CPU.
| Cypher1980 said: Does anyone know exactly what the SPE's are capable of. I mean are they totally independant and able to access the system or are they just sub processors which use the main core for scheduling and essentially just run encapsulated processes and submit the results to the main core CPU. |
As far as I understand the architecture the scheduling happens on the PPE, which communicates events to the SPEs over some dedicated channels. Other channels can be used by the SPEs for DMA communication, so once they start crunching numbers they can work quite indipendently on a chunk of main memory.
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