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Comment: Re:"cell" architecture is all about local memory (Score 1) 207

by Naysayer (#14000571) Attached to: IBM Releases Cell SDK
That 256k has to hold the program that the SPE is running, as well as all the data. For fast DMA, though, your data is probably double-buffered so divide your data space in half, and hey, you might want a little space for stack / other dynamic memory usage.

Suppose your program is 48k, you use 32k of memory dynamically, that leaves 172k for data, which is double-buffered, which means the program can only process 86k of data at a time.

But it sure can do it fast.

Never trust an operating system.

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