Why can't two "computers" be on one board?

By: Paul A. Clayton (paaronclayton.delete@this.gmail.com), October 11, 2018 6:49 pm
Room: Moderated Discussions
anon (spam.delete.delete@this.this.spam.com) on October 11, 2018 7:02 am wrote:
> Michael S (already5chosen.delete@this.yahoo.com) on October 11, 2018 4:06 am wrote:
[snip]
> > What prevents Cloudflare from ordering 1S servers with 1.5x or 2.x # of nodes
> > per unit of volume relatively to their current setup (4 nodes per 2U) ?
> >
>
> They'd have to completely redesign the sleds.
> It's doable, half width, DIMM slots and socket in a row instead of next to each other,
> PSU configuration will change, but doable. Considering the extra components it might
> work out once you factor in the lower power consumption, but it's not great.
>
> The problem is right now they're using some standard Quanta 2S boards and they don't offer anything like the
> half width 1S boards they'd need. There's no market for it. No one in their right mind would pay for twice
> the boards and PSUs they need since everyone except QC supports 2S, so all the high density options are 2S.

Is there some fundamental reason why two computers could not share a single motherboard, power supply, etc.?

Obviously such an arrangement would not be as useful as being able to share memory contents (even without cache coherence) and capacity as well as network (and other I/O) interfaces, but it would appear to address the density/form factor and PSU count issues.
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Cloudflare jumps to custom Intelnobody in particular2018/10/10 07:55 AM
  Cloudflare jumps to custom Intelnone2018/10/10 08:25 AM
  Cloudflare jumps to custom Intelanon2018/10/10 08:39 AM
  Cloudflare jumps to custom IntelMaynard Handley2018/10/10 09:26 AM
    Cloudflare jumps to custom Intelnobody in particular2018/10/10 12:03 PM
      Cloudflare jumps to custom IntelWilco2018/10/10 12:25 PM
        Cloudflare jumps to custom Intelanon2018/10/10 01:07 PM
          Cloudflare jumps to custom Intelhobold2018/10/10 01:14 PM
          Cloudflare jumps to custom IntelWilco2018/10/10 01:58 PM
            Cloudflare jumps to custom Intelanon2018/10/10 07:56 PM
              Cloudflare jumps to custom IntelWilco2018/10/11 01:18 AM
                Cloudflare jumps to custom IntelMichael S2018/10/11 02:43 AM
                Cloudflare jumps to custom Intelanon2018/10/11 02:30 PM
          Cloudflare jumps to custom IntelBeastian2018/10/10 04:33 PM
            Cloudflare jumps to custom IntelDoug S2018/10/11 01:38 AM
          Qualcomm restructured server chip unitjuanrga2018/10/11 02:04 AM
            Qualcomm restructured server chip unitnone2018/10/11 03:38 AM
              Qualcomm restructured server chip unitMichael S2018/10/11 06:48 AM
                Qualcomm restructured server chip unitnone2018/10/11 08:15 AM
      Cloudflare jumps to custom Intelanon2018/10/10 12:29 PM
  Cloudflare jumps to custom IntelDoug S2018/10/10 11:10 AM
    Cloudflare jumps to custom Inteldmcq2018/10/10 11:27 AM
    Cloudflare jumps to custom Intelanon2018/10/10 02:07 PM
      Cloudflare jumps to custom IntelMichael S2018/10/11 03:06 AM
        Cloudflare jumps to custom Intelanon2018/10/11 06:02 AM
          Why can't two "computers" be on one board?Paul A. Clayton2018/10/11 06:49 PM
            Why can't two "computers" be on one board?rwessel2018/10/12 12:01 AM
              TwinBladesPaul A. Clayton2018/10/12 04:52 AM
            Why can't two "computers" be on one board?Doug S2018/10/12 01:01 AM
              Why can't two "computers" be on one board?Etienne2018/10/12 02:04 AM
              [O.T.] bladesMichael S2018/10/12 02:17 AM
                [O.T.] bladesAdrian2018/10/12 04:17 AM
              Why can't two "computers" be on one board?anon2018/10/12 03:04 AM
                Why can't two "computers" be on one board?rwessel2018/10/12 07:29 AM
                  Why can't two "computers" be on one board?anon2018/10/12 07:55 AM
              1S vs 2SWes Felter2018/10/12 01:30 PM
                1S vs 2SDoug S2018/10/12 02:35 PM
            Why can't two "computers" be on one board?anon2018/10/12 03:10 AM
            Why can't two "computers" be on one board?hobel2018/10/12 06:53 AM
      Cloudflare jumps to custom Intelanon.12018/10/11 09:16 AM
  Weird numbersjuanrga2018/10/11 02:11 AM
    Weird numbersanon2018/10/11 06:08 AM
      Weird numbersjuanrga2018/10/11 10:34 AM
        Weird numbersanon2018/10/11 11:24 AM
  Look at the figures, folksAM2018/10/11 08:15 AM
    Look at the figures, folksFoo_2018/10/11 09:22 AM
      Look at the figures, folksAM2018/10/11 10:02 AM
        Look at the figures, folksanon2018/10/11 02:49 PM
          Look at the figures, folksSimon Farnsworth2018/10/12 12:19 AM
            Some power efficiency figuresAM2018/10/12 03:59 AM
              Some power efficiency figuresSimon Farnsworth2018/10/12 09:00 AM
                Some power efficiency figuresMaynard Handley2018/10/12 09:33 AM
                  Some power efficiency figuresSimon Farnsworth2018/10/12 10:51 AM
                    Some power efficiency figuresanon2018/10/12 12:55 PM
                    Some power efficiency figuresMaynard Handley2018/10/12 02:37 PM
                      Some power efficiency figuresanon2018/10/12 03:04 PM
                        Some power efficiency figuresMaynard Handley2018/10/12 03:16 PM
                          Some power efficiency figuresanon2018/10/13 01:13 AM
                          Some power efficiency figuresanon2018/10/13 04:06 AM
                      Some power efficiency figuresSimon Farnsworth2018/10/13 03:52 AM
                        Some power efficiency figuresanon2018/10/13 04:17 AM
                Reread what you saidAM2018/10/14 08:14 AM
          Important clue for several postersAM2018/10/12 03:48 AM
            Important clue for several postersjuanrga2018/10/12 09:07 AM
              Important clue for several postersWilco2018/10/12 12:50 PM
                Thanks (NT)juanrga2018/10/13 03:17 AM
            Important clue for several postersWes Felter2018/10/12 01:42 PM
              Important clue for several postersAM2018/10/14 08:00 AM
                Cloudflare CPU has better perf/WDavid Kanter2018/10/15 07:39 AM
                  Cloudflare CPU has better perf/Wanon2018/10/15 08:10 AM
                    Cloudflare CPU has better perf/WDavid Kanter2018/10/15 10:09 AM
                      Cloudflare CPU has better perf/Wanon2018/10/15 11:52 AM
            Important clue for several postersanon2018/10/13 01:20 AM
              Important clue for several postersAM2018/10/14 07:58 AM
                Important clue for several postersanon2018/10/14 02:29 PM
                  Important clue for several postersAM2018/10/16 09:18 AM
                    Important clue for several postersanon2018/10/16 10:35 AM
                    Important clue for several postersanon2018/10/17 03:01 PM
    Look at the figures, folksDavid Kanter2018/10/13 05:08 AM
      Look at the figures, folksAM2018/10/14 07:50 AM
        Look at the figures, folksDavid Kanter2018/10/14 08:25 PM
          Look at the figures, folksMichael S2018/10/15 01:16 AM
            What?!AM2018/10/16 09:12 AM
          ARM servers in AzureMichael S2018/10/15 01:19 AM
            ARM servers in Azurejuanrga2018/10/15 04:41 AM
              ARM servers in AzureMichael S2018/10/15 04:46 AM
              ARM servers in AzureAnon2018/10/15 04:54 AM
                ARM servers in Azureanon2018/10/15 06:40 AM
          Look at the figures, folksAM2018/10/16 09:07 AM
        Look at the figures, folksMichael S2018/10/15 01:25 AM
        What figures?someone2018/10/15 04:35 AM
          What figures?AM2018/10/16 09:03 AM
            What figures?someone2018/10/17 07:19 AM
              What figures?wumpus2018/10/18 07:46 AM
      Look at the figures, folksJames2018/10/15 04:16 AM
        Look at the figures, folksAnne O. Nymous2018/10/15 04:31 AM
          Look at the figures, folksanonymou52018/10/15 04:47 AM
            Look at the figures, folksAnne O. Nymous2018/10/15 04:55 AM
        Watch the financial reportsAnon2018/10/15 05:00 AM
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