The Computation-Acceleration Model is an SPE-centric model that provides a smaller-grained and more integrated use of SPEs.
The model speeds up applications that use computation-intensive mathematical functions without requiring significant rewrite of the applications. Most computation-intensive sections of the application run on SPEs. The PPE acts as a control and system-service facility.
Multiple SPEs work in parallel. The work is partitioned manually by the programmer, or automatically by the compilers. The SPEs must efficiently schedule MFC DMA commands that move instructions and data.
This model either uses shared memory to communicate among SPEs, or it uses a message-passing model.