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Number crunching :
8 GPUs
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Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14650 Credit: 200,643,578 RAC: 874 |
What set of cards would you have in a computer that see's more than 8 gpus to begin with? Most motherboard only fit 4x dual slot cards of 6 single slots......4x dual slots with 295/590/6990 etc. will only be 8 gpu's and 6 single slot cards would only be 6 cpus. The only time you would probably run into that issue is if you have 6x 295's water cooled for single slot which would be 12 gpu's however the Nvidia drivers only support 4 cards to begin with, which would be 8 cores max. At least that's my understanding. (I may be talking about SLi max and not total max not really sure) -BeNT-, if you read a bit further down the thread, you'll see that the 8-GPU remark applies to a custom, hand-built workstation-class enclosure priced between 30 and 42 thousand dollars, depending whether you choose C2070 Tesla cards (the cheap option) or Quadro 6000 GPUs (rather more expensive) - either card with 6GB video memory per card. At that price, I expect them to send round an NVidia engineer to install the drivers personally! |
Wiggo Send message Joined: 24 Jan 00 Posts: 34744 Credit: 261,360,520 RAC: 489 |
What set of cards would you have in a computer that see's more than 8 gpus to begin with? Most motherboard only fit 4x dual slot cards of 6 single slots......4x dual slots with 295/590/6990 etc. will only be 8 gpu's and 6 single slot cards would only be 6 cpus. The only time you would probably run into that issue is if you have 6x 295's water cooled for single slot which would be 12 gpu's however the Nvidia drivers only support 4 cards to begin with, which would be 8 cores max. At least that's my understanding. (I may be talking about SLi max and not total max not really sure) As I said before that system setup with decent PSU's and lower end dual hex core CPU's will come in just under $10,000 as I can't see any cruncher wanting either Telsa or Quadro cards and then I suggested fitting 8 GTX560's which will bring the price to about $12,000 (others may go for GTX570's or 580's) which should be a pretty good beast (plus I'm sure that Todd would have fun with it). ;) Cheers. |
J. Mileski Send message Joined: 9 Jun 02 Posts: 632 Credit: 172,116,532 RAC: 572 |
What set of cards would you have in a computer that see's more than 8 gpus to begin with? Most motherboard only fit 4x dual slot cards of 6 single slots......4x dual slots with 295/590/6990 etc. will only be 8 gpu's and 6 single slot cards would only be 6 cpus. The only time you would probably run into that issue is if you have 6x 295's water cooled for single slot which would be 12 gpu's however the Nvidia drivers only support 4 cards to begin with, which would be 8 cores max. At least that's my understanding. (I may be talking about SLi max and not total max not really sure) Here is a PDF of the manual for the 8 GPU boardhttp://www.tyan.com/manuals/FT72-B7015_Manual_v1.01.pdf |
speedbump Send message Joined: 19 May 01 Posts: 247 Credit: 192,906,380 RAC: 0 |
Try 3000 watts of power and 8 gtx590s ;-) |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
OTOH, IIRC, Windows see max 8 GPUs.. so the max is (currently) 8 cards with 1 GPU each, or 4 cards with 2 GPUs each. ... Actually it's not a Windows feature, the BOINC Scheduler won't deliver work for more than 8 GPUs: const int MAX_GPUS = 8; However, I think setting the cache to twice what you really want would take care of that awkwardness. The project's config.xml <min_sendwork_interval> of 300 seconds might be a limitation on that 16 GPU system, though. I expect they'll be willing to reduce that minimum somewhat if so. Joe |
ML1 Send message Joined: 25 Nov 01 Posts: 20289 Credit: 7,508,002 RAC: 20 |
... the BOINC Scheduler won't deliver work for more than 8 GPUs: Eeek, that's a bit of a short sighted killer. Then again, to increase the max GPUs count then resurrects the question of how do you stop a bad host from trashing too many WUs...? Yet without starving a new good host starting up...? Happy fast crunchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14650 Credit: 200,643,578 RAC: 874 |
Actually it's not a Windows feature, the BOINC Scheduler won't deliver work for more than 8 GPUs: With the feeder/scheduler combination supplying up to 97 tasks every five minutes - or perhaps 40 each time, I've seen that recently - I don't think we'll hit that limit any time soon. Unless they're all shorties, in which case we're all f****d already, because the download limit bites before the scheduler limit. And, yet again, we're here to process the data that SETI (the search, not the project) requires to be processed: SETI (the project, not the search) doesn't exist to supply data for the fastest cruncher we can build. If the scheduler can't supply enough data, join another project. I'm sure GPUGrid's new 'long task' subproject would be grateful for the extra help in their "batch of experiments to study the behavior of a protein likely implied in Alzheimer's disease". |
Al Send message Joined: 3 Apr 99 Posts: 1682 Credit: 477,343,364 RAC: 482 |
There is a 8 GPU motherboard and case, made by Tyan and sold through http://www.velocitymicro.com/wizard.php?sr=0&iid=190. It is not cheap and I am guessing not cheap to run. It can be configured with either the Tesla cards or the GeForce cards. There are only two 2.5" bays for SATA laptop drives or SSDs. There are no external drive bays. Yeah, just for giggles, I clicked the link and configured it to the hilt. Using the 8 Quadro cards, fully decked out, came out to the low, low price of $53383. But hey, this week, this system ships for Free! Count me in, all because of the Free Shipping! ;) |
-BeNt- Send message Joined: 17 Oct 99 Posts: 1234 Credit: 10,116,112 RAC: 0 |
There is a 8 GPU motherboard and case, made by Tyan and sold through http://www.velocitymicro.com/wizard.php?sr=0&iid=190. It is not cheap and I am guessing not cheap to run. It can be configured with either the Tesla cards or the GeForce cards. There are only two 2.5" bays for SATA laptop drives or SSDs. There are no external drive bays. Hey not bad! Free shipping sounds great! /sarcasm If I spent that much on a system it better cause ET to give up hiding and call my house asking for the president. Traveling through space at ~67,000mph! |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65746 Credit: 55,293,173 RAC: 49 |
There is a 8 GPU motherboard and case, made by Tyan and sold through http://www.velocitymicro.com/wizard.php?sr=0&iid=190. It is not cheap and I am guessing not cheap to run. It can be configured with either the Tesla cards or the GeForce cards. There are only two 2.5" bays for SATA laptop drives or SSDs. There are no external drive bays. Jaw drops to floor, Then eyeballs pop out somewhat. Dang that would be one heck of a system, As that's a lot of moo la. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Viciente Send message Joined: 21 Jan 11 Posts: 228 Credit: 326,384 RAC: 0 |
....... Ohh.. if I would have money.. *sigh* *dreaming* yes .. definitely! :-) i love hubble! .. |
speedbump Send message Joined: 19 May 01 Posts: 247 Credit: 192,906,380 RAC: 0 |
You can use any of the Nvidia cards with this chasis, and then the cost is not nearly so high. Still a lot, just not as much. Mine is already ordered and will be built and running soon I hope. Quadros for our purpose just dont make sense in terms of performance and cost. The enthusiast cards perform much better and cost much less. |
Hephaiston Send message Joined: 15 Jun 08 Posts: 8 Credit: 604,600 RAC: 1 |
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speedbump Send message Joined: 19 May 01 Posts: 247 Credit: 192,906,380 RAC: 0 |
Here's another idea. Cubix make a unit that you can put up to four video cards in, with its own power supply, and attach it to one pcie slot in the host computer.So take 8 slots in host computer x4 video cards in each Cubix = 32, and with gtx590s multiply that by 2 and you get 64. Not sure how well that would work with the thouroughput and the ability to feed all the cards, but it sure would be interesting. Maybe it could be the next stage of upgrade. |
Dave Send message Joined: 29 Mar 02 Posts: 778 Credit: 25,001,396 RAC: 0 |
Think that just stunned us all into silence. |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
Well if that isn't enough for you. Then you might want an 18 x16 slot board. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
Area 51 Send message Joined: 31 Jan 04 Posts: 965 Credit: 42,193,520 RAC: 0 |
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OzzFan Send message Joined: 9 Apr 02 Posts: 15691 Credit: 84,761,841 RAC: 28 |
Well if that isn't enough for you. Then you might want an 18 x16 slot board. From that site: Eighteen (18) PCI Express x16 card slots (mechanical) So that would fit 9 dual-slot cards, but would there be enough shared bandwidth between all the slots to handle 9 cards efficiently? It also looks like it's only PCI Express 1.0, so it has half the bandwidth shared between those 9 cards. |
Fred J. Verster Send message Joined: 21 Apr 04 Posts: 3252 Credit: 31,903,643 RAC: 0 |
When this kind of Power Computer {Cluster} becomes mainsteam, SETI might not been able to keep up whith the amount of data comming from and to this Mega-Cruncher and a solid [i]High Speed(A)DSL of at least 20Mbit/sec, which isn't really fast, would be necessary, too. But it would be nice, to have one, well you can always Dream about it which is totally free of any charge ;-) (20MByte(160Mbit) per second is faster.) |
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