kars on 12 March 2007
staticneuron said:
Very nice.... except the PPE alone can grab 4 instructions from the XDR and write 2 in a single cycle. The PPE has 512k cache while "EACH" individual SPE has 256k of ram.
Ooops, yes, You are right, only the PPE has 512 KB of memory, the SPEs only have a local memory of 256 KB (and the need that the programmer has to take control of the memory management).
I won't write anything about the PPE access of the XDR, due to the fact that I have doubts, that the SPEs will leave their memory access to the PPE, which will be bothered more than enough by the branch heavy parts of the Software (AI, Physics and so on).
