It may be overkill now but I'm planning to revisit the Multi GPU code in
the near future and that's why I need a motherboard that can really take
advantage of it.
On Jun 22, 2013 10:12 AM, "ET" <sketchfoot.gmail.com> wrote:
> Hi,
>
> Thanks v much for you specs Divi. :) I've been debating with myself as my
> board as it looks good and has a very nice spec. From what I've read, the
> only problems with it is the higher than average power draw.
>
> .Scott. I believe the board runs in x8/x8/x8/x8 for a 4 GPU config - so
> effectively PCI2 2.0 x16 rate. Would this present any problems, if you
> were running the serial GPU code, From what I read on the AMBER GPU
> hardware page, this is more important for the parallel GPU code? Though, I
> imagine having 4x serial ruins going simultaneously would also tax the GPU
> to CPU interface, though how much I'm not sure.
>
> Apparently, if you are going intel, you can only acheive PCIe 3.0 using at
> least a Sandy Bridge-E or ivy bridge CPU in a socket 155. Please correct me
> if I have understood this incorrectly though.
>
> http://www.enthusiastpc.net/articles/00003/3.aspx
>
>
> A socket 2011 proposition would be the Asus P9X79-E WES which has 2x PLX
> PEX 8747 chips so can run at x16/x16/x16/x16 with four GPUs
>
> https://www.asus.com/Motherboards/P9X79E_WS/#specifications
>
> However, I'm unsure whether this is overkill for running 4xGPUs doing AMBER
> serial code.
>
> What do you guys think?
>
> br,
> g
>
>
>
> On 22 June 2013 16:15, Scott Le Grand <varelse2005.gmail.com> wrote:
>
> > Does this MB support full p2p at 16x PCIE Gen 3 speeds between all 4
> GPUs?
> > On Jun 21, 2013 4:09 PM, "Divi/GMAIL" <dvenkatlu.gmail.com> wrote:
> >
> > >
> > > ET:
> > > I am using GA-Z77X-UP7 that has PLX chipset and supports 3rd Gen
> > LGA1155
> > > socket. Bought together with 2 TITANS sometime in March.
> > > It has been running pretty stable 24/7 since then. I thought of
> buying
> > > two more titans later to fill all four slots. With so much mess going
> on
> > > with TITANS, I put off that plan until the dust settles. You might
> want
> > to
> > > check new 4th GEN cpus and supporting motherboards as the Hardware keep
> > > changing pretty rapidly these days.
> > >
> > > I have i5-processor with 16 GB ram and 256 GB SSD. All four PCI-E
> > lanes
> > > are X-16. It also has native X-16 link directly "hardwired" to
> CPU-lanes
> > > that will bypass PLX chipset, in case if you run single GPU. This might
> > > reduce a bit of latency but not much. I get 35ns/day on FIX/NVE
> benchmark
> > > bypassing PLX chipset, but get about 34ns/day using PLX chipset (on
> TITAN
> > > of
> > > course!!). Not a deal breaker..
> > >
> > > Link below:
> > >
> > > http://www.gigabyte.com/products/product-page.aspx?pid=4334#ov
> > >
> > > HTH
> > > Divi
> > >
> > > -----Original Message-----
> > > From: ET
> > > Sent: Thursday, June 20, 2013 8:18 PM
> > > To: AMBER Mailing List
> > > Subject: [AMBER] Anyone running machines with Quad GPU setups
> > >
> > > Hi all,
> > >
> > > I was looking at getting a new mobo to run a quad GPU system. I was
> > > wondering if anyone has done this. If you could post the model & make
> of:
> > >
> > > 1) motherboard
> > > 2) CPU
> > > 3) RAM
> > > 4) Case
> > > 5) The aggregate estimate of ns in simulation you have run on your
> setup
> > > without issue,
> > >
> > > I would be much obliged! :)
> > >
> > > br,
> > > g
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> > >
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> > >
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> >
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Received on Sat Jun 22 2013 - 12:00:03 PDT
