IBM Going with Samsung after dumping GlobalFoundries

By: Michael S (already5chosen.delete@this.yahoo.com), December 21, 2018 7:39 am
Room: Moderated Discussions
anon (spam.delete.delete.delete@this.this.this.spam.com) on December 21, 2018 5:30 am wrote:
> Michael S (already5chosen.delete@this.yahoo.com) on December 21, 2018 3:46 am wrote:
> > Maynard Handley (name99.delete@this.name99.org) on December 20, 2018 6:43 pm wrote:
> > > itsmydamnation (no.delete@this.way.com) on December 20, 2018 2:02 pm wrote:
> > > > Anon (Anon.delete@this.anon.com) on December 20, 2018 11:07 am wrote:
> > > > > https://newsroom.ibm.com/2018-12-20-IBM-Expands-Strategic-Partnership-with-Samsung-to-Include-7nm-Chip-Manufacturing
> > > >
> > > > This was the thing i actually wondered about most when GF made the 7nm abandonment announcement.
> > > > How much process development capability does IBM have left? Will IBM work with Samsung
> > > > to develop things like edram for their 7nm process, can it already do it?
> > > >
> > > > Its going to be interesting to exactly what the 7nm power chips look like.
> > >
> > > There are many ways to skin a cat. IBM may perhaps have to give up on-chip eDRAM, but as a replacement they
> > > may be able to use some sort of die-die stacking to put
> > > a massive L3 cache as a separate die under the logic
> > > die. (To goose the performance a little, you could also do mid-90s things like have on-logic-die tags for
> > > the L3, with the L3 data on the separate die, but I don't know if that's worth the hassle.)
> > >
> >
> > There are many ways to skin a power cat. Not so many way for skinning cat360.
> >
> > Traditionally S/360 designer don't trust SRAM for long-term storage.
> > For years their SRAM caches were write-through (their preffered term is store-through)
> > and most recently (z14) they got rid of SRAM caches completely.
>
> I'm pretty sure the L1 is still SRAM.


From my copy of "IBM z14 Technical Guide".
The cache hierarchy (L1, L2, L3, and L4) is implemented with embedded dynamic random access memory (eDRAM) caches.


Do you think that's a mistake in the Guide ?
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TopicPosted ByDate
IBM Going with Samsung after dumping GlobalFoundriesAnon2018/12/20 12:07 PM
  IBM Going with Samsung after dumping GlobalFoundriesitsmydamnation2018/12/20 03:02 PM
    IBM Going with Samsung after dumping GlobalFoundriesanon2018/12/20 04:50 PM
    IBM Going with Samsung after dumping GlobalFoundriesMaynard Handley2018/12/20 07:43 PM
      IBM Going with Samsung after dumping GlobalFoundriesMichael S2018/12/21 04:46 AM
        IBM Going with Samsung after dumping GlobalFoundriesanon2018/12/21 06:30 AM
          IBM Going with Samsung after dumping GlobalFoundriesMichael S2018/12/21 07:39 AM
            IBM Going with Samsung after dumping GlobalFoundriesanon2018/12/21 08:24 AM
            Definitely a mistakeDavid Kanter2018/12/21 09:09 AM
              Definitely a mistakeMichael S2018/12/22 08:45 AM
                Definitely a mistakedmcq2018/12/22 11:26 AM
                Definitely a mistakeRobert Williams2018/12/22 11:40 AM
                Definitely a mistakesomeone2018/12/22 01:46 PM
                L1 caches are SRAMDavid Kanter2018/12/22 02:27 PM
                Definitely a mistakeanon2018/12/22 02:30 PM
                Definitely a mistakecarop2018/12/22 08:09 PM
                L1 caches are SRAMjuanrga2018/12/23 05:23 AM
    IBM Going with Samsung after dumping GlobalFoundriesDavid Kanter2018/12/20 09:28 PM
      IBM Going with Samsung after dumping GlobalFoundriesKevin G2018/12/21 08:57 AM
        Samsung fabbed Alpha 21164A chips in 1996/7Mark Roulo2018/12/21 05:24 PM
          Samsung fabbed Alpha 21164A chips in 1996/7Kevin G2018/12/25 03:03 PM
      IBM Going with Samsung after dumping GlobalFoundriesAdrian2018/12/21 11:55 PM
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