Hi Sampad, The AMD folks that are CC'd are better people to comment than me, but I believe the L3 cache is a "memory side" cache, and thus doesn't need to maintain coherence.
If you have a fix to add hits/misses for any of these files, and are willing to contribute it back, it would be great if you could submit a patch for it. Matt On Mon, Aug 17, 2020 at 11:00 PM Sampad Mohapatra <su...@psu.edu> wrote: > 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 >>> >>> >>> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> >>> Virus-free. >>> www.avg.com >>> <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> >>> <#m_-8358212102347321869_m_-6648754351699623829_m_1723920294658796898_m_-8550086026140872479_m_-203124547492808951_m_-2486225155787835700_m_2217726199504402898_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>> _______________________________________________ >>> gem5-users mailing list -- gem5-users@gem5.org >>> To unsubscribe send an email to gem5-users-le...@gem5.org >>> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s >> >> _______________________________________________ >> gem5-users mailing list -- gem5-users@gem5.org >> To unsubscribe send an email to gem5-users-le...@gem5.org >> %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s > >
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