New article on Intel's 3DXP

Article: Intel’s Plans for 3DXP DIMMs Emerge
By: Howard Chu (hyc.delete@this.symas.com), December 1, 2018 1:52 pm
Room: Moderated Discussions
anon (spam.delete.delete@this.this.spam.com) on December 1, 2018 8:21 am wrote:
> Michael S (already5chosen.delete@this.yahoo.com) on December 1, 2018 7:56 am wrote:
> > Howard Chu (hyc.delete@this.symas.com) on December 1, 2018 5:23 am wrote:
> > > Personally I don't believe Optane DIMMs are going to replace DRAM, but tech
> > > like STT-MRAM has a good shot, if they ever reach parity to DRAM density.
> >
> > I don't quite get it. Why parity is enough? Doesn't new tech has to be at least
> > 1.5x to 2x denser in order to get a shot at replacement of old tech? Especially
> > something like MRAM that seems to get an inherent disadvantage in write energy.
> >
> > Or do you consider non-volatility an advantage?
> > I used to think about non-volatility as minor disadvantage, but in lights of all those new
> > security threats around I am starting to think that may be disadvantage is not so minor.

What security threats are you thinking of? I believe with non-volatility and
non-destructive reads, MRAM is immune to rowhammer-style attacks. (But I don't
have any references that claim to have tested or verified this.)

Greater density would be a nice bonus, but yes, I believe reaching parity
is enough, because non-volatility is a significant advantage in terms of
system reliability, performance, and power savings. Eliminating the DRAM refresh
cycle and its periodic bottleneck is a significant win.

It's nice that Optane DIMMs are denser than DRAM, but they're still far behind
in latency. Nobody is going to use a machine whose system RAM is 100% Optane,
it would be much slower than a DRAM-based machine.

> For a database it's an advantage because then you don't need to guarantee
> that the RAM can't lose power before all data has been written to disk.
> For everything else you're probably right.

For any application that ever needs to store persistent state - which is
pretty much all of them. Would let you avoid lengthy fsck procedures on
most filesystems.
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TopicPosted ByDate
New article on Intel's 3DXPDavid Kanter2018/07/23 10:02 AM
  New article on Intel's 3DXPGroo2018/07/23 01:53 PM
    New article on Intel's 3DXPMichael S2018/07/23 02:47 PM
  New article on Intel's 3DXPTeemo2018/07/23 05:38 PM
    New article on Intel's 3DXPWes Felterw2018/07/23 09:41 PM
    Flash DIMMs = bad ideaDavid Kanter2018/07/24 04:31 AM
      Flash DIMMs = bad ideaEmil Briggs2018/07/24 06:30 AM
        Flash DIMMs = bad ideaDavid Kanter2018/07/24 06:49 AM
          Flash DIMMs = bad ideaMichael S2018/07/24 06:59 AM
          Flash DIMMs = bad ideaEmil Briggs2018/07/24 08:29 AM
          Flash DIMMs = bad ideaDoug S2018/07/24 08:49 AM
            price Michael S2018/07/24 03:16 PM
              price Doug S2018/07/24 03:32 PM
                price Michael S2018/07/24 03:49 PM
            Flash DIMMs = bad ideablaine2018/12/03 04:40 PM
              Flash DIMMs = bad ideaWes Felter2018/12/04 12:07 PM
                Flash DIMMs = bad ideaRichardC2018/12/04 04:09 PM
        Flash DIMMs = bad ideaMichael S2018/07/24 06:51 AM
        Flash DIMMs = bad ideaAdrian2018/07/24 07:35 AM
          Flash DIMMs = bad ideaRicardo B2018/07/24 09:24 AM
        Flash DIMMs = bad ideabakaneko2018/07/24 06:55 PM
  New article on Intel's 3DXPEtienne2018/07/25 05:02 AM
  New article on Intel's 3DXPHoward Chu2018/12/01 06:23 AM
    New article on Intel's 3DXPMichael S2018/12/01 08:56 AM
      New article on Intel's 3DXPanon2018/12/01 09:21 AM
        New article on Intel's 3DXPHoward Chu2018/12/01 01:52 PM
          New article on Intel's 3DXPAdrian`2018/12/01 03:43 PM
            New article on Intel's 3DXPAdrian2018/12/01 11:05 PM
              New article on Intel's 3DXPHoward Chu2018/12/11 05:17 AM
                New article on Intel's 3DXPAdrian2018/12/11 05:42 AM
                New article on Intel's 3DXPMaynard Handley2018/12/11 08:20 AM
                  New article on Intel's 3DXPwumpus2018/12/11 09:36 AM
                  New article on Intel's 3DXPAnon2018/12/11 05:21 PM
                    New article on Intel's 3DXPMaynard Handley2018/12/11 05:32 PM
                      New article on Intel's 3DXPAnon2018/12/12 12:29 AM
                        New article on Intel's 3DXPMaynard Handley2018/12/12 11:32 AM
                          New article on Intel's 3DXPwumpus2018/12/12 12:07 PM
                            New article on Intel's 3DXPMaynard Handley2018/12/12 12:41 PM
                              New article on Intel's 3DXPAnon2018/12/12 03:55 PM
                          New article on Intel's 3DXPAnon2018/12/12 03:49 PM
                      New article on Intel's 3DXPAnne O. Nymous2018/12/12 01:14 AM
                        New article on Intel's 3DXPanon2018/12/12 06:28 AM
                        New article on Intel's 3DXPMaynard Handley2018/12/12 11:26 AM
                          New article on Intel's 3DXPAnne O. Nymous2018/12/12 02:10 PM
                      New article on Intel's 3DXPinnocent bystander2018/12/12 10:34 PM
                New article on Intel's 3DXPanon2018/12/12 02:42 PM
            New article on Intel's 3DXPHoward Chu2018/12/02 05:53 AM
              New article on Intel's 3DXPAdrian2018/12/02 07:01 AM
                New article on Intel's 3DXPHoward Chu2018/12/02 11:34 AM
                  Intel's 3DXP availabilityEtienne Lorrain2018/12/03 04:50 PM
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