Hi Vanchinathan,

It should be safe, but will probably have performance implications (and it’s 
technically not part of the standard).

I would think you’re likely to want L2’s per core, or up to possibly 4 core or 
so, and then a crossbar for interleaving across L3s. If you build these more 
sensible topologies you should not have problems.

The system you describe is rather unrealistic…

Andreas

From: gem5-users 
<[email protected]<mailto:[email protected]>> on behalf of 
Vanchinathan Venkataramani <[email protected]<mailto:[email protected]>>
Reply-To: gem5 users mailing list 
<[email protected]<mailto:[email protected]>>
Date: Wednesday, 27 July 2016 at 06:09
To: gem5 users mailing list <[email protected]<mailto:[email protected]>>
Subject: [gem5-users] Safety of SnoopMask Extension

Hello all

I am trying to run 64 cores, ARMV8, FS with Classic Memory on gem5.

I found that the current SnoopMask can only support 64 connections and hence 
cannot be used to model more than 32 cores or more with separate L1 I- and 
D-Cache. This forced me to change the data type from uint64_t to uint128_t and 
modify some ostream related functions.

This change works fine for the tested benchmark, However, I would like to know 
if this safe.

Thanks a lot in advance!.
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