Re: [Gems-users] Changing processors per chip

[Philip Garcia <pcgarcia@xxxxxxxx>]

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The constraint can be overridden by specifying to create more L1  
caches.   However more code than just RubyConfig.{h,C} must be  
changed to do this.   I have some modifications done that allow me to  
specify extra L1 caches in ruby.   These extra caches can then be  
used by other devices in the same method opal reads and writes to the  
cache.   I haven't done much testing with it so far though, as it was  
mostly a proof of concept before going ahead with the work that will  
use these extra ports.  Most of my modifications involved changing  
the slicc generator code so that it would use the proper function  
calls in Chip.C to create the network how you want it.   If you have  
more questions I can see what I can do.
Phil
On Oct 21, 2006, at 9:16 AM, Dan Gibson wrote:

> The only reason I am aware of is to ensure that each processor has an
> L1, and that there aren't any unused L1s floating around. There  
> might be
> some implementation details to iron out in Ruby's code -- I recommend
> you grep for g_PROCS_PER_CHIP and RubyConfig::numberOfProcsPerChip 
> () and
> have a look at where they are used. I expect this will be a long  
> list...
> perhaps others will have a more insightful reply.
>
> Regards,
> Dan
>
> Hemayet Hossain wrote:
>
> > Sorry, my earlier email had wrong subject heading.
> >
> > Currently the ruby requires  "the number L1Cache controller to be  
> > equals
> > to the number of processor per chip".  Can anybody tell me why is  
> > that
> > requirement is to maintain? If I want to change that constraint then
> > where have I to change (any pointer for looking)? I will really
> > appreciate any sort of reply.
> > Thanks.
> > ------
> > Hemayet
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