The case for 128-bit ISA:s?

By: Marcus (m.delete@this.bitsnbites.eu), January 26, 2021 1:41 pm
Room: Moderated Discussions
It's natural to anticipate that the next step after 64-bit computing is 128-bit computing.

SIMD and floating-point aside, I assume that increasing the virtual address space beyond 64 bits will be the driving factor for this, but I fail to see when a single process may need more than 16 exabytes of linear address space.

That much DRAM seems impractical (even if looking far into the future). Or would you want to use it for memory mapping huge files? Or something completely different?
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The case for 128-bit ISA:s?Marcus2021/01/26 01:41 PM
  The case for 128-bit ISA:s?rwessel2021/01/26 01:59 PM
    The case for 128-bit ISA:s?blaine2021/01/27 12:56 PM
  The case for 128-bit ISA:s?anonymou52021/01/26 02:06 PM
  The case for 128-bit ISA:s?Kevin G2021/01/26 05:50 PM
    The case for 128-bit ISA:s?Doug S2021/01/27 10:49 AM
      The case for 128-bit ISA:s?rwessel2021/01/27 02:05 PM
  The case for 128-bit ISA:s?Jon Masters2021/01/26 08:48 PM
    One memory, one system, one world, one people, one Leader! (NT)pureblood2021/01/26 11:09 PM
      One Skynet (NT)Jouni Osmala2021/01/26 11:21 PM
    The case for 128-bit ISA:s?Marcus2021/01/26 11:27 PM
    128-bit ISA bandwidthRobert David Graham2021/01/27 12:33 AM
      128-bit ISA bandwidthMarcus2021/01/27 02:23 AM
  The case for 128-bit ISA:s?juanrga2021/01/27 12:57 AM
    The case for 128-bit ISA:s?Konrad Schwarz2021/01/27 05:08 AM
  The case for 128-bit ISA:s?Rob Thorpe2021/01/27 08:05 AM
    The case for 128-bit ISA:s?dmcq2021/01/27 08:28 AM
    The case for 128-bit ISA:s?anon2021/01/28 12:30 AM
  recurring themeMichael S2021/01/27 10:00 AM
    recurring themedmcq2021/01/27 10:09 AM
      recurring themerwessel2021/01/27 02:01 PM
        recurring themedmcq2021/01/27 02:33 PM
          recurring theme - jokedmcq2021/01/27 03:18 PM
  The case for 128-bit ISA:s?Brendan2021/01/28 05:43 AM
    The case for 128-bit ISA:s?Linus Torvalds2021/01/28 10:56 AM
      The case for 128-bit ISA:s?Marcus2021/01/29 04:13 AM
        The case for 128-bit ISA:s?Michael S2021/01/29 06:51 AM
          The case for 128-bit ISA:s?Marcus2021/01/29 07:15 AM
          It is an economic limitDoug S2021/01/29 10:14 AM
            It is an economic limitJouni Osmala2021/01/29 10:48 PM
              It is an economic limitDoug S2021/01/30 11:51 AM
                It is an economic limitJouni Osmala2021/01/30 08:58 PM
                  It is an economic limitDoug S2021/01/31 10:28 AM
                  It is an economic limitanon22021/01/31 08:49 PM
          The case for 128-bit ISA:s?hobold2021/01/29 11:21 AM
            The case for 128-bit ISA:s?rwessel2021/01/29 12:43 PM
              The case for 128-bit ISA:s?hobold2021/01/29 01:53 PM
              The case for 128-bit ISA:s?Doug S2021/01/29 02:04 PM
              The case for >64 bit ISAswumpus2021/01/30 12:18 PM
        The case for 128-bit ISA:s?David Hess2021/01/30 05:55 PM
          The case for 128-bit ISA:s?Marcus2021/01/31 02:47 AM
            The case for 128-bit ISA:s?rwessel2021/01/31 07:35 AM
              The case for 128-bit ISA:s?Doug S2021/01/31 10:36 AM
                The case for 128-bit ISA:s?wumpus2021/01/31 12:00 PM
                The case for 128-bit ISA:s?Anon2021/01/31 01:58 PM
                  The case for 128-bit ISA:s?Brett2021/01/31 03:12 PM
        The case for 128-bit ISA:s?zArchJon2021/02/01 09:13 AM
          The case for 128-bit ISA:s?dmcq2021/02/01 10:15 AM
            The case for 128-bit ISA:s?zArchJon2021/02/01 10:28 AM
              The case for 128-bit ISA:s?dmcq2021/02/01 11:05 AM
              The case for 128-bit ISA:s?GeertB2021/02/01 09:25 PM
                The case for 128-bit ISA:s?GeertB2021/02/01 09:26 PM
                The case for 128-bit ISA:s?Etienne Lorrain2021/02/02 01:46 AM
                  The case for 128-bit ISA:s?Michael S2021/02/02 03:11 AM
                  The case for 128-bit ISA:s?rwessel2021/02/02 04:18 AM
                  The case for 128-bit ISA:s?zArchJon2021/02/02 07:20 AM
                  The case for 128-bit ISA:s?gallier22021/02/02 07:40 AM
                  The case for 128-bit ISA:s?GeertB2021/02/02 02:26 PM
                    The case for 128-bit ISA:s?rwessel2021/02/02 06:58 PM
                      The case for 128-bit ISA:s?zArchJon2021/02/02 08:50 PM
                        The case for 128-bit ISA:s?rwessel2021/02/03 06:51 AM
                          The case for 128-bit ISA:s?zArchJon2021/02/03 08:46 AM
                            The case for 128-bit ISA:s?rwessel2021/02/03 10:28 AM
                          The case for 128-bit ISA:s?dmcq2021/02/03 03:43 PM
                            The case for 128-bit ISA:s?dmcq2021/02/03 05:07 PM
                            The case for 128-bit ISA:s?rwessel2021/02/03 05:42 PM
      The case for 128-bit ISA:s?Brendan2021/01/29 09:34 AM
        The case for 128-bit ISA:s?Linus Torvalds2021/01/29 01:24 PM
          The case for 128-bit ISA:s?Jörn Engel2021/01/29 04:27 PM
            DRAM growth under 20% a yearBrett2021/01/29 05:09 PM
              DRAM growth under 20% a yearLinus Torvalds2021/01/29 05:38 PM
                xPoint/Optane is not NAND flash. (NT)Heikki Kultala2021/01/30 01:54 AM
              DRAM growth under 20% a yearJörn Engel2021/01/29 06:43 PM
          The case for 128-bit ISA:s?Brendan2021/01/29 11:12 PM
            There is no need for 128 bits on anything else than addressign and cryptoHeikki Kultala2021/01/30 02:11 AM
              There is no need for 128 bits on anything else than addressign and cryptoBrendan2021/01/30 02:36 AM
                There is no need for 128 bits on anything else than addressign and cryptoFoo_2021/01/30 02:49 AM
                  There is no need for 128 bits on anything else than addressign and cryptoBrendan2021/01/30 03:38 AM
                    There is no need for 128 bits on anything else than addressign and cryptodmcq2021/01/30 05:40 AM
                    There is no need for 128 bits on anything else than addressign and cryptoAdrian2021/01/30 08:05 AM
                      There is no need for 128 bits on anything else than addressign and cryptoMarcus2021/01/30 08:43 AM
                        There is no need for 128 bits on anything else than addressign and cryptoAnon2021/01/30 10:27 AM
                          Is "really small" enough?wumpus2021/01/30 12:55 PM
                            Is "really small" enough?Anon2021/01/30 01:11 PM
                              Is "really small" enough?David Hess2021/01/30 06:05 PM
                                It is the oppositeAnon2021/01/30 06:49 PM
                                  It is the oppositeDavid Hess2021/01/30 09:01 PM
                                    It is the oppositeMarcus2021/01/31 01:52 AM
                                      It is the oppositerwessel2021/01/31 07:44 AM
                          There is no need for 128 bits on anything else than addressign and cryptoHoward Chu2021/02/04 07:18 AM
                            There is no need for 128 bits on anything else than addressign and cryptoAnon2021/02/04 07:43 AM
                      There is no need for 128 bits on anything else than addressign and cryptorwessel2021/01/30 11:10 AM
              There is no need for 128 bits on anything else than addressign and cryptorwessel2021/01/30 06:05 AM
                There is no need for 128 bits on anything else than addressign and cryptoAnon2021/01/30 10:27 AM
                  There is no need for 128 bits on anything else than addressign and cryptorwessel2021/01/30 11:22 AM
                    There is no need for 128 bits on anything else than addressign and cryptodmcq2021/01/30 11:43 AM
                      There is no need for 128 bits on anything else than addressign and cryptorwessel2021/01/30 04:17 PM
                        There is no need for 128 bits on anything else than addressign and cryptozArchJon2021/02/01 10:07 AM
                          There is no need for 128 bits on anything else than addressign and cryptoIan Ameline2021/02/01 09:08 PM
                            There is no need for 128 bits on anything else than addressign and cryptodmcq2021/02/02 03:54 AM
                            There is no need for 128 bits on anything else than addressign and cryptorwessel2021/02/02 04:37 AM
                          One nibble per decimal digit.Mark Roulo2021/02/02 09:01 AM
                            One nibble per decimal digit.rwessel2021/02/02 09:14 AM
                              One nibble per decimal digit.dmcq2021/02/02 10:33 AM
                                One nibble per decimal digit.rwessel2021/02/02 12:59 PM
                                  One nibble per decimal digit.dmcq2021/02/02 01:43 PM
                                    One nibble per decimal digit.zArchJon2021/02/02 08:59 PM
                                      One nibble per decimal digit.dmcq2021/02/03 05:54 PM
                                  One nibble per decimal digit.anon2021/02/03 09:55 AM
                                    One nibble per decimal digit.blaine2021/02/03 02:33 PM
                                    One nibble per decimal digit.dmcq2021/02/03 02:43 PM
                    There is no need for 128 bits on anything else than addressign and cryptoAnon2021/01/30 12:10 PM
                      There is no need for 128 bits on anything else than addressign and cryptorwessel2021/01/30 08:09 PM
                        There is no need for 128 bits on anything else than addressign and cryptoAnon2021/01/30 08:18 PM
            The case for 128-bit ISA:s?rwessel2021/01/30 06:01 AM
            The case for 128-bit ISA:s?Linus Torvalds2021/01/30 12:35 PM
      The case for 128-bit ISA:s?Yuhong Bao2021/01/30 03:00 PM
        The case for 128-bit ISA:s?Brett2021/01/30 05:13 PM
          The case for 128-bit ISA:s?Yuhong Bao2021/01/30 05:40 PM
            Quad socket serversBrett2021/01/30 07:38 PM
              Quad socket serversRayla2021/01/30 09:17 PM
                Quad socket serversMarcus2021/01/31 12:47 AM
                  Quad socket serversme2021/01/31 10:32 AM
                Quad socket serversBrett2021/01/31 01:08 AM
            The case for 128-bit ISA:s?cloudy1232021/01/31 09:17 AM
              The case for 128-bit ISA:s?Yuhong Bao2021/01/31 04:59 PM
    The case for 128-bit ISA:s? - climate?dmcq2021/01/29 02:11 AM
      NonsenseFoo_2021/01/29 03:29 AM
        Nonsensedmcq2021/01/29 04:36 AM
          Nonsenseanon2021/01/29 09:43 AM
            Nonsensejuanrga2021/01/30 09:38 AM
              Nonsensehobold2021/01/30 01:16 PM
                (non-)locality of computationcarlie coats2021/01/31 09:07 AM
      The case for 128-bit ISA:s? - climate?Brendan2021/01/29 09:47 AM
        The case for 128-bit ISA:s? - climate?anonymou52021/01/29 10:18 AM
          The case for 128-bit ISA:s? - climate?Marcus2021/01/29 12:10 PM
        The case for 128-bit ISA:s? - climate?Maynard Handley2021/01/29 10:57 AM
          The case for 128-bit ISA:s? - climate?Foo_2021/01/29 12:39 PM
          The case for 128-bit ISA:s? - climate?anon22021/01/30 09:45 AM
      Climate-model compute costsCarlie Coats2021/01/29 02:34 PM
        Oops!~ Climate-model compute costsCarlie Coats2021/01/29 02:36 PM
          Oops!~ Climate-model compute costsdmcq2021/01/29 06:05 PM
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