Re: [Gems-users] SimicsDriver

["Dave Z." <zhu_dave@xxxxxxxxx>]

I'm comparing two configurations:

CONF1: no modifications
CONF2: new component added to Ruby SLICC

Event though the number of events is smaller in CONF2,
the number of Ruby cycles is much higher. I don't
understand what might cause this. The only difference
is the SimicsDriver stats. CONF1's Simics Driver stats
are much smaller, that's why I was asking whether
Simics Driver stats would affect Ruby cycles.

Is there anything other than the number of events that
adds to Ruby cycles?

Thank you for your help!

Dave 

--- Kevin Moore <kmoore@xxxxxxxxxxx> wrote:

> Dave,
> 
> On Apr 11, 2007, at 7:54 PM, Dave Z. wrote:
> 
> > Hello All,
> >
> > As I understand Simics delivers data/instruction
> > fetches to Ruby and these data/instruction fetches
> are
> > recorded by SimicsDriver, right? Could you please
> > clarify the following?
> >
> > - Do these requests recorded by SimicsDriver only
> come
> > from Simics? Or are there some Ruby requests which
> > might get recorded by SimicsDriver as well?
> 
> I'm not sure what you mean here, but I believe all
> memory requests come  
> from Simics if ruby is run without opal.  Otherwise,
> the requests come  
> from opal.
> 
> > - When sending data from one processor to another
> > (e_sendData), does it involve SimicsDriver?
> 
> No.
> 
> >
> > - When Ruby models the data allocation and data
> > movement behaviors such as cache line allocation,
> > L1_to_L2, L2_replacement, etc., are these requests
> > sent back to Simics? Or recorded by SimicsDriver?
> 
> No.
> 
> Hope that helps,
> 
> Kevin
> 
> > Thank you.
> >
> > Dave
> >
> >
> >
> >
>
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