"The SPE is a vector-only processor. Every operation
works on multiple data elements in parallel, stored in 128-bit
registers. There are no scalar (single-element) registers or
operations. Each SPE has 256KB of local storage for both
instructions and data. This storage is not a "cache" -- it does not
share address space with main memory.
"Communication between elements is also somewhat unusual,
although it won't have significant effects on our early
explorations of Cell/B.E. development. Data does not need to be
managed entirely by the PPE. Each SPE can communicate directly with
main memory and furthermore, the SPEs can communicate directly with
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