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Your First Linux Playstation 3 Programming Steps

Aug 06, 2008, 20:00 (0 Talkback[s])
(Other stories by Jonathan Bartlett)

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"The most surprising part of this design is that the SPE's 256K local store is not a cache -- it is actually the full amount of memory that an SPE has to work with at a time for both programs and data. This seems like a disadvantage, but it actually gives several advantages:

"Local store memory accesses are extremely fast compared to main memory accesses.
Accesses to local store memory can be predicted down to the clock cycle.
Moving data in and out of main memory can be requested asynchronously and predicted ahead of time"

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