[ydl-gen] PS3 Linux and Controller

Henry A. Leinhos henry at leinhos.com
Fri Oct 20 06:23:18 MDT 2006


Derick, 

I'm not sure how either of your references addresses the original comment 
that the Cell SPEs are not SMP cores, but rather co-processors. 

Looking at IBM's developer references: 

http://www-306.ibm.com/chips/techlib/techlib.nsf/products/Cell_Broadband_Eng 
ine 

there are several papers addressing the Cell architecture.  One 
(2053_IBM_CellIntro.pdf) presents a good overview of the Cell.  In it it 
refers to several programming models for the SPEs:  device extension model, 
function offload model, and streaming programming model.  The SPEs are 
*clearly* co-processors tightly coupled with a modified PPC 970.  The power 
in the cell is that it provides the hardware for very efficient parallel 
signal processing, not that it is a 9-way SMP machine (1 PPC + 8 SPEs). 


Regards,
Henry 

Derick Centeno writes: 

> Henry, 
> 
> I believe you misread the Wikipedia reference. 
> 
> Perhaps that is not the case, it is also possible that between the time 
> you referenced it and I did, additions were made which were not there 
> before. 
> Let's be clear that as convenient as Wikipedia is; it is not reliable as 
> a consistent reference.  The author of the article for Wikipedia 
> complains that he didn't use all his references as Wikipedia's system is 
> doesn't meet professional standards. 

<blah blah blah> 

> The link however, which I provided earlier published by High 
> Productivity Computing is from very reputable sources and no one there 
> is engaged in hiding or slanting the facts.  Here is that link again: 
> 
> http://www.hpcwire.com/hpc/967146.html 
> 
> Another different analysis from a reputable publication Ars Technica is 
> here: 
> 
> http://arstechnica.com/articles/columns/linux/linux-20061018.ars 
> 
>  
> 
 



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