Re: [Gems-users] SimicsDriver

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

For an implementation that would move the data between
processors' caches, is it enough to modify only SLICC?
Is there anything that might need to be changed (such
as the number of active requests, etc.) in
SimicsProcessor or Sequencer?

Thank you,

Dave


--- "Dave Z." <zhu_dave@xxxxxxxxx> wrote:

> 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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