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Re: [Discuss-gnuradio] Cell in a laptop...


From: Bob McGwier
Subject: Re: [Discuss-gnuradio] Cell in a laptop...
Date: Fri, 11 Jan 2008 13:36:07 -0500
User-agent: Thunderbird 2.0.0.9 (Windows/20071031)

It is EXTREMELY difficult to see how the fine grained control of transactional memory that is available with the full cell will be available with this "spe's hung on a Core 2". The first article even got it wrong, calling this a core 2 quad (from the remarks that followed right after calling it core 2 duo).

Of course, this will not burn a hundred watts to run the six spe's (not 8 like the first article says) in the PS3 but I suspect that the penalties for having this subset are larger than are immediately apparent. Having an EIB is nice but having no IO path (such as would exist on a laptop) to get really high speed data into them seems likely to not be there. Almost certainly it will not have a capable northbridge to accomplish the high speed IO.

Bob

Eric Blossom wrote:
On Fri, Jan 11, 2008 at 09:33:48AM -0800, Matt Ettus wrote:
Cell processor in a laptop at CES...

   http://crave.cnet.co.uk/video/0,139101587,49295004,00.htm


The article doesn't quite get it right (no surprise there)...

The SpursEngine is a media coprocessor that has 4 SPEs in it and
dedicated h/w for MPEG-2 and H.264.

No PPC, not a "Cell Broadband Engine"


This article seems a bit more grounded:

  http://techon.nikkeibp.co.jp/english/NEWS_EN/20071017/140756/

Eric


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