IBM developerWorks has posted some additional information about the kernel modifications to exploit the SPE coprocessors on Cell, including the programming model, inter-processor communication, and the filesystem designed to let userspace control SPE execution. Even more interesting is a lengthy interview with Arnd Bergmann, the kernel maintainer for Linux on Cell. Among other things, he tells us that talk of a Cell processor workstation may have just been a misunderstanding about the recently shown blade prototype.

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