Re: [Gems-users] Protocol race in MOESI_CMP_directory


Date: Thu, 27 Mar 2008 11:23:43 -0500
From: "Mike Marty" <mike.marty@xxxxxxxxx>
Subject: Re: [Gems-users] Protocol race in MOESI_CMP_directory
On Thu, Mar 27, 2008 at 4:21 AM, Daniel Sánchez Pedreño
<sanatox@xxxxxxxxx> wrote:
> Dear list,
>
> recently I've been testing MOESI_CMP_directory protocol in gems-2.1 for 32
> processors. For some benchmarks from SPLASH-2, the simulation crash due to
> an invalid transition in L2. This trantisition occurs with a L1_PUTO event
> when the current state is SLS.
>
> I`m not very experiencied in L2 cache protocols but I think that I can solve
> this problem just issuing a Writeback NACK to L1. Would be that correct?
>

Yes.
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