TM granularity and versioning

Article: Haswell Transactional Memory Alternatives
By: Maynard Handley (name99.delete@this.redheron.com), November 21, 2012 11:52 am
Room: Moderated Discussions
Paul A. Clayton (paaronclayton.delete@this.gmail.com) on November 21, 2012 9:27 am wrote:
> Maynard Handley (name99.delete@this.redheron.com) on November 20, 2012 10:52 pm wrote:
> > "Intel’s TSX tracks the read-set and write-set at cache line (64B) granularity during a transaction.
> > An RS conflict occurs if a cache line in the read-set is written by another thread."
> >
> > Is it really necessary to do things this way?

My apologies. I started writing a piece to explain my point in more careful detail, but realized as I became more specific that while it would work in the most common cases, it could fail in more sophisticated situations --- which renders the whole idea moot.
Well, c'est la vie.
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
Article: Haswell TM AlternativesDavid Kanter2012/08/21 10:17 PM
  Article: Haswell TM AlternativesHåkan Winbom2012/08/22 12:52 AM
    Article: Haswell TM AlternativesDavid Kanter2012/08/22 02:06 AM
  Article: Haswell TM Alternativesanon2012/08/22 09:46 AM
    Article: Haswell TM AlternativesLinus Torvalds2012/08/22 10:16 AM
      Article: Haswell TM AlternativesDoug S2012/08/24 09:34 AM
    AMD's ASF even more limitedPaul A. Clayton2012/08/22 10:20 AM
      AMD's ASF even more limitedLinus Torvalds2012/08/22 10:41 AM
        Compiler use of ll/sc?Paul A. Clayton2012/08/28 10:28 AM
          Compiler use of ll/sc?Linus Torvalds2012/09/08 01:58 PM
            Lock recognition?Paul A. Clayton2012/09/10 02:17 PM
              Sorry, I was confusedPaul A. Clayton2012/09/13 11:56 AM
  Filter to detect store conflictsPaul A. Clayton2012/08/22 10:19 AM
  Article: Haswell TM Alternativesbakaneko2012/08/22 03:02 PM
    Article: Haswell TM AlternativesDavid Kanter2012/08/22 03:45 PM
      Article: Haswell TM Alternativesbakaneko2012/08/22 10:56 PM
  Cache line granularity?Paul A. Clayton2012/08/28 10:28 AM
    Cache line granularity?David Kanter2012/08/31 09:13 AM
      A looser definition might have advantagesPaul A. Clayton2012/09/01 07:29 AM
    Cache line granularity?rwessel2012/08/31 08:54 PM
      Alpha load locked granularityPaul A. Clayton2012/09/01 07:29 AM
        Alpha load locked granularityanon2012/09/02 06:23 PM
          Alpha pages groupsPaul A. Clayton2012/09/03 05:16 AM
  An alternative implementationMaynard Handley2012/11/20 10:52 PM
    An alternative implementationbakaneko2012/11/21 06:52 AM
      Guarding unread values?Paul A. Clayton2012/11/21 09:39 AM
        Guarding unread values?bakaneko2012/11/21 12:25 PM
    TM granularity and versioningPaul A. Clayton2012/11/21 09:27 AM
      TM granularity and versioningMaynard Handley2012/11/21 11:52 AM
        Indeed, TM (and coherence) has devilish details (NT)Paul A. Clayton2012/11/21 11:56 AM
Reply to this Topic
Name:
Email:
Topic:
Body: No Text
How do you spell green?