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Number crunching :
Chec my crunching machine spec please
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Author | Message |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65868 Credit: 55,293,173 RAC: 49 |
Im not quite as poor but i understand where you are coming from. Geez, If You doubled that to 28 hours, You'd pass Me up, I noticed that My specs were 400MHz short as the ram I'm going to get one day is DDR3-2000 for the PC I'm rebuilding. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Im not quite as poor but i understand where you are coming from. Bought already I have 1 9800GX2 already from ebay £75 msi K9A2 platinum mobo + £100 inc VAT/Delivery still to buy 2Gb DDR2 1066 memory £40 Phenom II X4 955BE £120 Coolermaster 1000W PSU £130 9800GX2 £80-100 ebay The PSU I will buy brand new. Everything else I will be trying to get 2nd hand to keep costs down, so the spec might change a bit based on parts availability... Case is an unknown at the moment, not sure what one to buy based on 4 dual width dual GPU's going in there. Need to do some research No idea on the RAC/£ as its not built yet!! |
FiveHamlet Send message Joined: 5 Oct 99 Posts: 783 Credit: 32,638,578 RAC: 0 |
Mac there aren't to many cases that will take 4 double width cards. I had to do a slight mod on Rig on a Bench so that the 4th card will fit. Sadly 1 GPU died before I could get it all running. Still waiting on the refund from the RMA. See here a case that takes 4 double width cards.3 in 1 to go. Dave |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Thx for the help first Im impressed you can run 4 cards on a 850W psu I was looking at 1200W minimum - have I over specced? Also what case is that? |
FiveHamlet Send message Joined: 5 Oct 99 Posts: 783 Credit: 32,638,578 RAC: 0 |
I don't run 4 cards of 850 watts. There are 2 PSU's connected to that rig. However the rig at the moment only has 2 GTX295's and 1 GPU of a GTX295 running and only draws 660 Watts. Dave |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Hehe :-) Bit the bullet and bought a 295 off of ebay - the most powerful card I have ever owned. Built a new rig and have started up boinc and run the unified installer 0.36 with the cuda 2.3 dlls Boinc manager reports 2 gpu's and I have 'do not use multi-gpu mode' selected in the nvidia control panel No cpu workunits at the moment, and I have downloaded a whole host of VHAR's which are producing mixed results. One core crunches them fine and the other gives me the following... http://setiathome.berkeley.edu/result.php?resultid=1603109510 Have I set up something wrong? I have stopped crunching til I hear back as there is no point generating errored work units.. |
Gundolf Jahn Send message Joined: 19 Sep 00 Posts: 3184 Credit: 446,358 RAC: 0 |
http://setiathome.berkeley.edu/result.php?resultid=1603109510 If both get the same type of work units, perhaps one of the GPUs is defect. You could disable that part with <ignore_cuda_dev>0</ignore_cuda_dev> in cc_config.xml, so that you can crunch at least with half power. Gruß, Gundolf Computer sind nicht alles im Leben. (Kleiner Scherz) SETI@home classic workunits 3,758 SETI@home classic CPU time 66,520 hours |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
It is definately a problem running both gpu cores Using the optimised apps 1 core is fine The other core gets to 19 secs and then errors!?! On the stock apps, both gpu cores crunch 1 is OK The other appears to crunch to 100% and then either errors or is OK - its a 50/50 chance Temps for the gpu are fine, fan 100% and temp about 67C... Have reverted back to stock |
Fred W Send message Joined: 13 Jun 99 Posts: 2524 Credit: 11,954,210 RAC: 0 |
It is definately a problem running both gpu cores Try using EVGA Precision to drop the memory clock to 750. The does not affect the crunch speed but takes some stress off the memory. F. |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
I have left work now, but will try and do this remotely. It is a zotac card, can I still use EVGA software? Edit - will try and use riva tuner and change the 3D profile down to your suggested value Having a look at the errors, I am getting different errors Complete list of errors below http://setiathome.berkeley.edu/results.php?hostid=5400786&offset=0&show_names=1&state=5 These two are different http://setiathome.berkeley.edu/result.php?resultid=1603270442 and then http://setiathome.berkeley.edu/result.php?resultid=1603270440 Does this give any clues? |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
looks like I was too clever - I set up remote access, the stuffed the machine under a bench at work. I disconnected the monitor, which seems to have disabled the GPU?? I stopped and started the client via RDP and I can see in the boinc messages No usable GPU's GPU's have become unusable, disabling GPU tasks I thought this only applied to Win7, which is one reason I went for XP64 - Do I need to use dummy vga adapters? |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14656 Credit: 200,643,578 RAC: 874 |
No, you need to stop using RDP. Other remote access tools are OK, but Microsoft's Remote Desktop is specifically known to unload the manufacturer's graphics drivers, and substitute a Microsoft generic driver. Unfortunately, that driver doesn't do CUDA. VNC or any of the other well-known remote access tools are - reportedly - fine. |
Fred W Send message Joined: 13 Jun 99 Posts: 2524 Credit: 11,954,210 RAC: 0 |
It is a zotac card, can I still use EVGA software? The EVGA software seems to work fine with any make of card from the reports that I have seen. I'm using it with my XFX - it's simpler to use than Rivatuner. F. |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Thanks for the head up on that Richard - sorted :-) I have used the EVGA tool to drop the memory from 999 - 750, but it doesn't seem to have made a difference :-( |
Fred W Send message Joined: 13 Jun 99 Posts: 2524 Credit: 11,954,210 RAC: 0 |
Thanks for the head up on that Richard - sorted :-) Tough - it was worth a try... I'm crunching on only half my 295 now because of the errors generated by the second GPU. Even with only one GPU crunching the temps are at 88/90 C. F. |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65868 Credit: 55,293,173 RAC: 49 |
Has anyone with a GTX 295 used this game "Just Cause 2" here? http://www.tomshardware.com/forum/105298-13-just-performance Here's the url for the Google search I did here. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
MadMaC Send message Joined: 4 Apr 01 Posts: 201 Credit: 47,158,217 RAC: 0 |
Is this a common problem then? The only reason I got the card was to crunch seti, am I better flogging it and getting a gtx285 :-( No point having it if I have to disable the 2nd core Unless I sell it and get a gtx 480. I know that the app is in beta, but when it goes mainstream, that might be an option if I can save the money up. Is it just luck of the draw, or are some manufacturers better than others? Gutted |
Fred W Send message Joined: 13 Jun 99 Posts: 2524 Credit: 11,954,210 RAC: 0 |
Is this a common problem then? The problem seems to be more common with the older 2-card version of the GTX295. Don't see where the benefit in swapping to a 285 would be - you would then be crunching on one core and you can already do that with the (crippled) 295. As to manufacturer, I haven't seen any analysis that indicates that any one is better, or worse, than any other. I believe it is as random as whether you got the MP you voted for. F. |
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