Thanks Steve for the reply. Infact, I dont want coherence across the bus 
bridge. It is assumed that clusters either side of bridge are running 
independent applcations. So, I want coherence to work accurately on the pair of 
two cores rather than across all four cores. This will work right?

---- Original message ----
>Date: Fri, 14 Dec 2007 18:50:31 -0800
>From: "Steve Reinhardt" <[EMAIL PROTECTED]>  
>Subject: Re: [m5-users] Clustering/Interconnection Related  
>To: "M5 users mailing list" <m5-users@m5sim.org>
>
>You could certainly build this configuration, but the coherence
>protocol will not work transparently across the bus bridge.  You'd
>have to adapt the coherence protocol and/or the bridge to make it work
>(just like in the real world).
>
>Steve
>
>On Dec 14, 2007 1:19 PM, Shoaib Akram <[EMAIL PROTECTED]> wrote:
>> I want to simulate the following system:
>>
>> A total of four cores each with L1 private L1 caches. Two cores connected by 
>> a shared bus. The other two cores also connected by a shared bus. The two 
>> clusters connected together by a point to point link or something.
>>
>> In essence, the goal is to have two separate shared bus fabrics in the 
>> system.
>>
>> Any idea how to model this in m5. I know m5 has this bridge mechanism but 
>> has anybody used it successfully?
>>
>> Regards,
>> Shoaib
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