The PPE supports software developed for SIMD to make it easier
for applications to be parallelized across the PPE and SPE’s.
SIMD in the Cell is similar to the PowerPC970, other than the
exception that the PPE supports rounding modes defined by the
SPE’s instruction set [2].
As just shown, the Cell is more powerful than a commodity CPU,
but also quite different. In order to enable efficient ray tracing on
the Cell, the following differences have to be taken care of:
CELL 还可以玩光线追踪。。
Real-Time Ray Tracing on the Cell Processor Filip Lars Roland Andersson 2008-09-03.