Re: [Gems-users] question about LX_CACHE_NUM_SETS_BITS parameter

["Konstantinos Aisopos" <kaisopos@xxxxxxxxx>]

thanks Mike. does the same happen with L2? If yes, isn't the default
value huge?? 16MB L2 per core?

L2_CACHE_ASSOC 4
L2_CACHE_NUM_SETS_BITS 16
=> L2 size = 2^16 * 4 * 64 = 16MB

thanks,
Kostas

On Sun, Apr 20, 2008 at 10:10 PM, Mike Marty <mike.marty@xxxxxxxxx> wrote:
> If L1_CACHE_ASSOC is 4 and L1_CACHE_NUM_SETS_BITS is 8, then each L1 cache
> instance is 2^8 * 4 * 64 bytes
>
>
>
>
> On Sun, Apr 20, 2008 at 1:26 PM, Konstantinos Aisopos <kaisopos@xxxxxxxxx>
> wrote:
> >
> >
> >
> > hi all,
> >
> > I have a quick question about some configuration parameters. I
> > simulate a MESI_SCMP protocol with 64 cores on one single chip.
> >
> > my question is: if LX is L1 or L2 and we have these parameters:
> > LX_CACHE_ASSOC 4
> > LX_CACHE_NUM_SETS_BITS 8
> > do these parameters represent the "total LX cache capacity" or the
> > "per core LX cache capacity"?
> >
> > in other words is the size of LX *per core*..
> >       4 * 2^16 = 256K entries => 256K * 64bytes/line = 16MB???
> > or.. (4 * 2^16) / 64 = 4K entries  => 4K * 64bytes/line = 256KB???
> >
> > thanks,
> > -Kostas
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