Inclusive L3? Wow

Article: ISSCC 2006: Intel Tulsa
By: Wouter Tinus (, February 21, 2006 7:06 am
Room: Moderated Discussions
Michael S ( on 2/21/06 wrote:
>It should be rather complex to build inclusive cache that has to stay in synch
>with not one, not two, but SIX inner caches!

How do you get six? I just count 2x L1 and 2x L2. And is it really that complex compared to other L3 caches? I thought Intel used write-through to keep levels of cache synchronized. Intuitively keeping track of updates from two cores shouldn't be much harder than with just one core, you just need more bandwidth (but thats inherent to sharing cache).

What added complexity do you see, and do you think an exclusive cache would be simpler? Thanks.
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TopicPosted ByDate
Intel Tulsa Coverage from ISSCCDavid Kanter2006/02/21 02:45 AM
  Intel Tulsa Coverage from ISSCCAlberto2006/02/21 04:43 AM
    Intel Tulsa Coverage from ISSCCPaul DeMone2006/02/21 06:52 AM
  Inclusive L3? WowMichael S2006/02/21 04:51 AM
    Inclusive L3? WowWouter Tinus2006/02/21 07:06 AM
      Inclusive L3? WowMichael S2006/02/21 08:20 AM
        Inclusive L3? Wowslim2006/02/21 11:40 AM
    It is?anonymous2006/02/21 09:57 AM
    Inclusive L3? WowLinus Torvalds2006/02/21 10:10 AM
      Inclusive L3? WowMichael S2006/02/21 11:03 AM
        Inclusive L3? WowLinus Torvalds2006/02/21 11:52 AM
          Inclusive L3? WowEric Bron2006/02/22 06:39 AM
            Inclusive L3David Kanter2006/02/22 12:16 PM
              Inclusive L3Eric Bron2006/02/22 01:00 PM
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