1 SPEs communicate with the outside world by using channels.

2 The SPEs include an attached memory flow controller (MFC).

3 The SPEs access main storage with direct memory access (DMA) commands that move data and instructions between main storage and a private local memory, called a local store or local storage (LS).

4 The SPEs do not have direct access to main memory, but only a small (256K on the PS3) local store (LS) which is in an independent, 32-bit address space.

5 The SPEs are independent processor elements, each running their own individual application programs or threads.

6 The SPEs depend on the PPE to run the operating system and, in many cases, the top-level thread control for an application.

7 Because the SPEs use such a different architecture, it's helpful to look at them in assembly language to get the full feel for what is happening.

8 Acceleration is also provided on the SPEs by vector processing features not found on the PPE, including 128-bit wide vector processing.

9 Connecting together the SPEs, the PPE, and the main memory controller is a bus called the Element Interconnect Bus.

10 This provided the impetus for the opening sentence of Gaudium et Spes.

11 In the next article, I'll describe how to use the iMic to gather an analog data stream, and I'll show you how to use one of the SPEs to turn the system into a useful spectrum analyzer.

12 So, not only can the PPE efficiently start overlapping execution on all SPEs, but the code would be expected to execute faster thanks to vector processing as well.

13 The EIB allows the PPE to start downloads on multiple SPEs and to overlap their starts and stops very efficiently so that the entire process is fully pipelined.

14 The test code provided in this article will reveal the true power of Cell/B.E. processing for threaded applications, and to some extent, the vector processing capabilities of the SPEs.

15 Each SPE can communicate directly with main memory and furthermore, the SPEs can communicate directly with each other.

16 This is done using mailboxes, special purpose registers available to the SPEs and to the PPE.

17 This series begins with an overview of the API used to communicate between the PPE and the SPEs.

18 This continues until all threads have been executed on the SPEs.

19 But this provides a framework for interacting with the SPEs and shows the basics of how the API works.

20 The PPE itself provides significant thread scaling, but it is intended to provide control and workload management for the SPEs,[] which provide much greater speedup for threads.

21 The code for the PPE takes care of initializing the program, setting up one or more SPEs with tasks, and performing input and output.

22 The research background, synthetic method, structural characteristics of polyphosphazenes and its influences on the properties of the SPEs are reviewed in this paper.

23 A new statistic method of multiple variation analysis was applied to screen the very important quality traits of SPes.

24 It's got one PPE, which is useful for game-type programming, and seven SPEs, which are...not so useful.

25 This is also our trusty compiler, but this one generates code for the SPEs.