Hi Matt,

I am currently trying to add the stats by myself. I also noticed that
neither hit nor miss stats are updated for L3 Cache.

But, I am facing a different issue now. The directory ctrl (DirCntrl) in
GPU_VIPER.py has a L3 cache (L3Cache).
But, there is also a separate L3Cntrl class which inherits from
L3Cache_Controller, but it is unused.
The L3Cache_Controller is generated from MOESI_AMD_Base-L3cache.sm, which
is a part of the Viper protocol.

If the L3Cache_Controller isn't used, then why is it a part of the Viper
protocol ?
Does the L3 Cache not maintain any coherency ?
Is this the intended behaviour of the default configuration ?

Thanks and Regards,
Sampad

On Thu, Aug 13, 2020 at 5:40 PM Matt Sinclair via gem5-users <
gem5-users@gem5.org> wrote:

> Hi Sampad,
>
> I'm not aware of a patch for this.  There was recently a patch to add
> similar support for the VIPER protocol:
> https://gem5-review.googlesource.com/c/public/gem5/+/30174.  If the AMD
> folks (CC'd) don't have a patch, then the next best thing would be to do
> something similar to the VIPER patch (although yes, the Core Pair changes
> would be a little more complicated).
>
> Thanks,
> Matt
>
> On Tue, Aug 4, 2020 at 4:53 PM Sampad Mohapatra via gem5-users <
> gem5-users@gem5.org> wrote:
>
>> Hello All,
>>
>> MOESI AMD Base - CorePair state machine is missing the actions for L1 and
>> L2 hit statistics.
>> The stats are present, but since no "action" is created nor used (actions
>> to update misses are present for both L1 and L2), the stats stay at 0.
>>
>> I am not clear as to which state transitions should
>> update the hit stats. Is there a patch for this ?
>>
>> Thank You,
>> Sampad Mohapatra
>>
>>
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