Re: [Gems-users] Private L2 in a CMP...

["Niket Agarwal (niketa@xxxxxxxxxxxxx)" <niketa@xxxxxxxxxxxxx>]

You need to use the SMP coherence protocols for modeling a private L2. It is the coherence protocol that determines whether the L2s are private/shared.

Cheers,

Niket

----- Original Message -----
From: David Bonavila <david.bonavila@xxxxxxxxxxxxxxxxxx>
Date: Monday, June 15, 2009 9:02 am
Subject: [Gems-users] Private L2 in a CMP...
To: gems-users@xxxxxxxxxxx

> Hi.
>
> I need to configure a CMP with a private L2 cache, and I would
> like to know
> which of these configs I should use:
>
> 1)
> ruby0.setparam g_PROCS_PER_CHIP 1
> ruby0.setparam g_NUM_PROCESSORS 2
>
> 2)
> ruby0.setparam g_PROCS_PER_CHIP 2
> ruby0.setparam g_NUM_PROCESSORS 2
> ruby0.setparam_str g_CACHE_DESIGN PRIVATE_L2
>
> 3)
> ruby0.setparam g_PROCS_PER_CHIP 1
> ruby0.setparam g_NUM_PROCESSORS 2
> ruby0.setparam_str g_CACHE_DESIGN PRIVATE_L2
>
> As I want to simulate a CMP, I guess I should use config number 2,
> but I
> don't know if that is the right way to do what I want.
> Does config number 1 (without the g_CACHE_DESIGN parameter)
> provide a
> private L2 cache??
> Or is any of them acceptable and the result will be the same??
>
> Thanks!!
>