8x GTX 980, but only 7 is wokring

[ingar195]

Hey

I'm building a rack mountable dual xenon E5-2690 (12cores@2.6-3.5GHz), with 8x GTX 980 and dual redundant 1200w psu's, and all of this is fitting inside a slightly modded 4.5u cabinet.

 

This is not a sli configuration, all card are "standalone".

 

So after i got this up and running, i on the first boot all gpu's where up and running in device manager, i didn't test the outputs, so im' not sure if all the card have ever worked at the same time. But after the first reboot (for the driver), only 7 out of 8 cards worked... I have tested the card's, so i know that all of them is wokring, bt im not able to get them all wokring at the same time.

 

Any suggestions?

 

[zappian]

OP 8 gtx 980?

Pics or didn't happen.

[thekeemo]

you need more lanes

[Prastupok]

Hey

I'm building a rack mountable dual xenon E5-2690 (12cores@2.6-3.5GHz), with 8x GTX 980 and dual redundant 1200w psu's, and all of this is fitting inside a slightly modded 4.5u cabinet.

 

This is not a sli configuration, all card are "standalone".

 

So after i got this up and running, i on the first boot all gpu's where up and running in device manager, i didn't test the outputs, so im' not sure if all the card have ever worked at the same time. But after the first reboot (for the driver), only 7 out of 8 cards worked... I have tested the card's, so i know that all of them is wokring, bt im not able to get them all wokring at the same time.

 

Any suggestions?

 

Well if you're running them redundant, it won't be anywhere near enough to power 8 of them first off.

 

What motherboard are you using?

[sirtoby]

Do you have 2 1200W psus which are redundant (4 in total), or is it only one redundant power supply? 1200W seem a bit low for dual xeons and 8 980s

[Arty]

Return them and get 7 Titans no refrence  LOL

btw prove it

[Megahurt]

I'm guessing you're using those flexible PCIe extenders, have you tested those ?

[ingar195]

OP 8 gtx 980?

Pics or didn't happen

I will upload some pictures when i arrive for work

[Arty]

I will upload some pictures when i arrive for work

so its a work pc, not your personal?

[Prastupok]

I will upload some pictures when i arrive for work

 

Why do you need 8 980s for a workstation... Even to me that sounds a bit ridiculous.

[ingar195]

Do you have 2 1200W psus which are redundant (4 in total), or is it only one redundant power supply? 1200W seem a bit low for dual xeons and 8 980s

hope this explanes

[Prastupok]

this explanes

 

Thats... that's not how redundant PSUs work... And why do you have the CPUs wired to different supplies anyway?

[ingar195]

Well if you're running them redundant, it won't be anywhere near enough to power 8 of them first off.

 

What motherboard are you using?

the moterboard is: Super X9DRG-OTF-CPU

[Prastupok]

the moterboard is: Super X9DRG-OTF-CPU

 

Well... I think you don't have the right CPU... the 2690 doesn't have 12 cores... it has 8.

...why do you need 8 980s, again?

[Trik'Stari]

.........what in the hell would someone use that for?

 

Well... I think you don't have the right CPU... the 2690 doesn't have 12 cores... it has 8.

...why do you need 8 980s, again?

 

That's what I'm saying.

 

Must be some seriously insane skyrim mods going on, and like.....eight 4k monitors.

[ingar195]

Thats... that's not how redundant PSUs work... And why do you have the CPUs wired to different supplies anyways

 

It works, so i didn't think about it

[Prastupok]

It works, so i didn't think about it

 

Again, what do you need 8 980s for? It could give us some insight.

[ingar195]

.........what in the hell would someone use that for?

 

 

That's what I'm saying.

 

Must be some seriously insane skyrim mods going on, and like.....eight 4k monitors.

Simulator usage:

skip to 0:36

that is our current rig

24 projectors and 24 GTX680

[Trik'Stari]

Simulator usage:

that is our current rig

24 projectors and 24 GTX680

......How much did that cost to build? I want one for Star Citizen lol

[Prastupok]

-snip-

 

I have a problem believing that... work like that would be using quadros, not gtx cards.

 

Back me up Trik'Stari?

[ingar195]

......How much did that cost to build? I want one for Star Citizen lol

not allowed to answer that it's confidential

[AStateOfTrance]

need to see pictures of this

[ingar195]

I have a problem believing that... work like that would be using quadros, not gtx cards.

 

Back me up Trik'Stari?

quadros are expensive, and i live in norway and a gtx 980 costs about 6300 nok (780usd) and the quadro 5200k costs about 25000nok (3100usd)

[sgloux3470]

I have a problem believing that... work like that would be using quadros, not gtx cards.

 

Back me up Trik'Stari?

 

Why the fuck does it matter?  Interrogating him doesn't really solve his issue.

 

 

So all the cards work individually OP?  (In that the issue is that only 7 of any 8 cards work at once?)

 

The motherboard has 8x PCI-E 3.0x16 slots and 2x PCI-E 3.0 x8 slots.  Might be worth swapping between them and seeing if that fixes it.

 

Anyway what I would recommend is downloading display driver uninstaller with all 8 cards installed and doing a quick reinstall of the drivers.  Maybe something went wrong.

 

40 PCI-E lanes should be enough so I don't think it's that.  Could be a faulty riser if you're using one of those.

[Prastupok]

quadros are expensive, and i live in norway and a gtx 980 costs about 6300 nok (780usd) and the quadro 5200k costs about 25000nok (3100usd)

 

I know, but if it's industrial, you aren't paying for them... it doesn't make sense to get 980s..

 

 

Why the fuck does it matter?  Interrogating him doesn't really solve his issue.

 

I asked him questions and explained some things... why be a tosser about it? I'm just making a point that this makes 0 sense for any industrial application.

 

It never was a question of lanes, and telling him what slots are on that board doesn't do anything.