Message boards :
Number crunching :
It Lives, It Lives !!
Message board moderation
Previous · 1 · 2 · 3 · 4 · Next
Author | Message |
---|---|
doug Send message Joined: 10 Jul 09 Posts: 202 Credit: 10,828,067 RAC: 0 |
The Monster's cooling system intrigued me. I have to do something to my P4/gt430 rig. When betreger starting making fun of of it I thought I'd better take a look. From what I've seen it should be capable of 3000-3500 RAC. The first thing GPU-Z showed me was that the GPU wasn't being pushed. I installed Process Lasso and set it to change the cuda apps to high priority. That pushed the GPU usage to 85-90%. Perfect. Then I started overclocking. Didn't take long before my GPU temps were topping 90c, so I backed down to the default again. The temp in my house hit maybe 25c and when I checked on it after work the GPU was running 90-95c. It's not going to last long like that. I've got a CPU fan, the power supply fan and a 80mm case fan in there. The 80mm seems pretty useless, but I guess you get what you pay for. I have space for a couple of good fans and I'm willing to drill. Any suggestions? I'm new to this. The house will never hit higher than 30c. By the way betreger has a gt430 attached to a dual core and he's getting less RAC than me. Just fess up and ask for help! Doug |
Terror Australis Send message Joined: 14 Feb 04 Posts: 1817 Credit: 262,693,308 RAC: 44 |
Hi Doug I'm not familiar with the GT430 but I do know that a P4 can drive any GPU up to a GTX470 at full blat and will run a GTX580 with 5% speed loss. I'm not familiar with your card, does it have a fan or is it passively cooled? Are you running the GPU fans (if any) on Auto or manually set to 100% ? "Side on" or "side off" ? :-) Can you post the make and model of your card so I can get a look at it ? Some observations on P4 CUDA crunching. On my regular and experimental systems, running a single task per GPU gives between 90 and 95% GPU usage. Even running through the PCI bus a GTS250 (470GFlops) ran at "normal" speed (approx 18 minutes for "standard" 0.4AR unit). The Win7 video system is less efficient at SAH crunching than XP so going back to XP on that rig could get you up to an additional 5% GPU usage. Memory is KING-- Recommended is a minimum of 750MB of RAM. I found you can get away with 500MB but you have to strip the OS absolutely bare and have SAH as the only running program. On "The Monster" there are only 26 services running with SAH shut down. Run GPU tasks only. In this type of crunching the CPU is used only to feed the video card. Keeping the GPU fed and watered keeps the CPU quite busy enough, (I found one GPU task required a constant 25% CPU on a 3GHz P4). Trying to run CPU tasks as well just binds the whole thing up. This could be the reason why yours and betreger's GPU tasks are taking so long. They are the equivalent of times I used to get with an 8600GT, and I presume the 430 should have more grunt than that. BOINC Manager and explorer.exe (the desktop) can get very memory and processor hungry at times, between them they can use around 150MB of memory and >50% of processor time on a low end system. Shutting them down saves heaps of resources. (You can restart them at any time by using the "File->Run" tab in Task Manager.) HTH T.A. |
Terror Australis Send message Joined: 14 Feb 04 Posts: 1817 Credit: 262,693,308 RAC: 44 |
A Question. What's the expected RAC from a 560Ti ? Just fantasizing what this beast could do with 7 of them in it.... Bwahahahaha T.A. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13736 Credit: 208,696,464 RAC: 304 |
A Question. Around 21,000. That's how much higher my E6600 is with a GTX560Ti in it (Factory overclock model). I think Jason has a GTX680 these days. I remember him mentioing it putting the GTX560Ti to shame for it's output, and while using very considerably less power. If i had the money, and it were actually possible to buy one, a GTX690 or 2 would be a very good investment. Grant Darwin NT |
tbret Send message Joined: 28 May 99 Posts: 3380 Credit: 296,162,071 RAC: 40 |
A Question. It isn't that nobody wants to answer you. It's just that nobody believes you could get 7 560ti's to run long enough without errors for it to matter. ;-) Something over 20k and less than 30k each, probably less than 25k each. |
red-ray Send message Joined: 24 Jun 99 Posts: 308 Credit: 9,029,848 RAC: 0 |
I think Jason has a GTX 680 these days. I remember him mentioing it putting the GTX560Ti to shame for it's output, and while using very considerably less power. Yes Jason has a 680. With 7 x 680 the RAC would be over 200K but the current CPU would not fast enough to feed them. How hot do all the GPUs get on this system and how do you monitor them? I suspect SIV would do OK, but have never tested it with more than 4 GPUs. |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
It isn't that nobody wants to answer you. It's just that nobody believes you could get 7 560ti's to run long enough without errors for it to matter. ;-) FWIW, to fill in the picture with those: The 'main' problem turned out to be the horrible drivers that came with these (266.66 IIRC), that corrupted a Cuda compute cache in Windows... I never had that issue, probably as Windows automatically put in a newer WHQL driver, so it was a toughie to find, and I found a way to force the drivers to use 'my' kernel binaries instead of driver runtime produced ones... overall reliability has improved significantly since that time on many cards. This was followed by noticing a strange coincidence where at least 3 users buying 560ti's, also purchased the same model of SSD... all of which had bung firmware. The symtom was bizarre file access problems encountered only with Cuda apps, and periodic bluescreens &/or crashes. likely paging / virtual / VRAM related. In those cases I understand a SSD firmware flash fixed that. The last 'main' issue was that a few models/brands were selling factory overclocked models with insufficient core voltage. I think, IIRC, our poor buddy Brad (Slavac) copped all three of these issues. He's now an appointed guinea pig, because anyone that can find all the problems that quickly is an excellent tester ;) 560ti is an excellent card, and has been from the start. The technology from that refinement clearly went into the 680/690 GPU design... so funnily enough some of my test code is scaling really well. Just goes to show experience down in the trenches can teach you a lot.. .the hard way of course ;) Jason "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
"His name is Robert Paulson!" I'm pretty sure I don't own any sort of rights to that name. If I do then some movie company owes me quite a lot of money. Generally I use names that come from the same movie as my user name.If I were to make a big crunchy thing like this then I suppose I might consider giving it some other kind of name. Maybe "Nibbler" SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
doug Send message Joined: 10 Jul 09 Posts: 202 Credit: 10,828,067 RAC: 0 |
Hi Doug Passively cooled and powered through the PCI bus. I should run XP. I have an unused copy. Currently I have 1Gb in the box. I have another 1Gb, but things didn't run as well for some weird reason when I went to 2Gb. It's the correct memory, clock speed etc. That's another project. I seem to be getting ~90% GPU usage now that I upped the priority of the Lunatics thread. I still use only ~6% of the CPU on that thread. I know Explorer chews a lot of CPU and memory as does Chrome, Firefox et.al. Surprised at Boinc client though. I usually leave it running. That's an easy enough change. Here's the URL for exactly where I got the card and my exact model. The site has front/left/right/back pictures of it. http://www.circuitcity.com/applications/SearchTools/item-details.asp?EdpNo=1416091&CatId=3669 I got it because it's a Fermi card and I'm taking an online course in parallel programming using none other than Cuda and Fermi cards. I also have an ATI OpenCL card in my i7 laptop, so from the computer science end of things my bases are covered. I pulled off the side cover and used your "external" fan approach for a few minutes (without the fags). GPU temps dropped to low 60s before I had to terminate because the cats got curious. I think I can clock this thing pretty high if I can get air to it. I am running CPU tasks as well, but I'm getting good GPU usage now. I'm not sure whether I should stop those or not given my low CPU usage for cuda apps. Doesn't appear to be a bottleneck. Thank you T.A. and thank "The Monster." You're an inspiration. Doug[/url] |
Peter M. Ferrie Send message Joined: 28 Mar 03 Posts: 86 Credit: 9,967,062 RAC: 0 |
seing as your able to run 7 .. assuming you had enough power to run all the cards what is the max amount of gpus the project would support per 1 computer |
HAL9000 Send message Joined: 11 Sep 99 Posts: 6534 Credit: 196,805,888 RAC: 57 |
seing as your able to run 7 .. IIRC the server will not believe you have more than 8. Which only effects the amount of work you can request. SETI@home classic workunits: 93,865 CPU time: 863,447 hours Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[ |
betreger Send message Joined: 29 Jun 99 Posts: 11361 Credit: 29,581,041 RAC: 66 |
The Monster's cooling system intrigued me. I have to do something to my P4/gt430 rig. When betreger starting making fun of of it I thought I'd better take a look. From what I've seen it should be capable of 3000-3500 RAC. The first thing GPU-Z showed me was that the GPU wasn't being pushed. I installed Process Lasso and set it to change the cuda apps to high priority. That pushed the GPU usage to 85-90%. Perfect. Then I started overclocking. Didn't take long before my GPU temps were topping 90c, so I backed down to the default again. The temp in my house hit maybe 25c and when I checked on it after work the GPU was running 90-95c. It's not going to last long like that. I've got a CPU fan, the power supply fan and a 80mm case fan in there. The 80mm seems pretty useless, but I guess you get what you pay for. I have space for a couple of good fans and I'm willing to drill. Any suggestions? I'm new to this. The house will never hit higher than 30c. Doug I did not intend to make fun of your GT430, I was merely making an observation. FYI I crunch Einstein on the gpu and am getting apx 8000 RAC there, Now I know E@H pays apx 30% more than seti so the expectation was conservative. BTW congrats on getting the card producing more. |
doug Send message Joined: 10 Jul 09 Posts: 202 Credit: 10,828,067 RAC: 0 |
Actually it was good for me to look at it. I was sort of letting things settle out before I paid much attention to it. That's when I discovered I was barely using the GPU. There are others out there with equipment similar to mine that are doing far better RAC-wise. I want to know why. Doug |
betreger Send message Joined: 29 Jun 99 Posts: 11361 Credit: 29,581,041 RAC: 66 |
Doug, I suspect, expect about 4k from that gpu, pls keep posted. It is very cool to keep old stuff productive. I would like to see your RAC after a couple of weeks of 24/7. |
Peter M. Ferrie Send message Joined: 28 Mar 03 Posts: 86 Credit: 9,967,062 RAC: 0 |
well what i was getting at was if you split the pcie lanes and were able to put for example 12 gtx 690's in a custom built enclosure with a few 1200 watt power supplys and a AMD's Magny-cours (12 core) Opteron just to feed the gpus 1. what kind of rac 2. would the project even give you enough work to fill it up 3. what problems does anyone think a system like this would have |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65746 Credit: 55,293,173 RAC: 49 |
Well the Monster might not have happened If I had not mentioned that I'd bought one of those pci-e x16 extenders over in another thread. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
red-ray Send message Joined: 24 Jun 99 Posts: 308 Credit: 9,029,848 RAC: 0 |
10 x GTX 680 will give at least a 300K RAC with the next Lunatics_x41 release. More if you power mod and overclock the GTX 680s. Most days I can get enough WUs for a 680+460 50K RAC system in 2 to 3 hours, so 10 x 680 in 24 hours should be possible. The system will run out of PCI memory space which is limited to 4GB. It's possible to have 64-bit PCI memory space but I have never seen GPU BARs above 4GB. You will need to have 1.0GB for RAM + 0.5 GB for PCIEXBAR and other BARs below 4GB and looking at my 980X with 4 GPUs it's got 2.5GB of memory so each GPU takes 0.25GB. 4.0 - 1.0 - 0.5 = 2.5 GB so 10 GPUs is the likely limit. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13736 Credit: 208,696,464 RAC: 304 |
10 x GTX 680 will give at least a 300K RAC with the next Lunatics_x41 release. So 10 GTX690s would give over 600,000 for a single machine. You'd also be chewing through 2.5-3kW of power. Grant Darwin NT |
red-ray Send message Joined: 24 Jun 99 Posts: 308 Credit: 9,029,848 RAC: 0 |
10 x GTX 680 will give at least a 300K RAC with the next Lunatics_x41 release. No, 10 x 690 is 20 GPUs so the PCI memory limit applies. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13736 Credit: 208,696,464 RAC: 304 |
In that case i'd go with 5 GTX690s. One 690 uses 100W less than 2 680s. Grant Darwin NT |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.