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

By: rwessel (robertwessel.delete@this.yahoo.com), October 12, 2018 7:29 am
Room: Moderated Discussions
anon (spam.delete.delete@this.this.spam.com) on October 12, 2018 4:04 am wrote:
> Doug S (foo.delete@this.bar.bar) on October 12, 2018 2:01 am wrote:
> > Paul A. Clayton (paaronclayton.delete@this.gmail.com) on October 11, 2018 7:49 pm wrote:
> > > 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.
> >
> >
> > No, there's no reason at all and I don't know why anon makes it sound as if it would be difficult.
> > This is the whole point of blade servers, after all - the servers slot in vertically rather
> > than horizontally so aren't restricted by the width of the rack. Then it is down to how tall
> > the blades need to be (how many rack units) and how closely you can space them together within
> > the standard rack width and still achieve the necessary cooling.
> >
>
> I said it's doable. The same layout has been used before. There's just nothing available that would
> just slot in. The width is more or less fixed though. If you want the same density per volume you
> have to change at least one out of width, height and length. If you don't want 1U or shorter blades
> the width is set. Vertical with 1.5U "height" (now width) and corresponding width works too.
>
> Either way it's either completely incompatible with their current servers or a custom design.
>
> > I see no reason why a cloud computing company would EVER want multi socket servers in today's
> > world of dozens of cores per socket. It adds additional cost while providing no additional
> > benefit. In order to succeed an ARM server vendor does not need to support more than one socket
> > per system. There's a ton of market to exploit that has no need for multi socket.
>
> Strangely enough they all seem to be using 2S anyway.


There's little, if any, cost disadvantage compared to two separate systems on a board, and have a bigger pie for the virtualization to slice up inherently makes management easier.
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TopicPosted ByDate
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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