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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: Computation errors |
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Thread Status: Active Total posts in this thread: 25
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges: 
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Turn a fan onto the board, water blocks don't cool capacitors!
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codes
Advanced Cruncher Joined: Oct 20, 2009 Post Count: 142 Status: Offline |
Look for bulging or ozing capaciters. Capacitors are flat on the top, so if you see or feel a raise then they are going bad.
A few years ago where I work, we had bunch of Dell motherboards with bad capacitors. All kinds of weird things were happening due to the capacitors failing. |
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges: 
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Turn a fan onto the board, water blocks don't cool capacitors! There is a 120mm fan blowing directly on the board
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges:
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Look for bulging or ozing capaciters. Capacitors are flat on the top, so if you see or feel a raise then they are going bad. I'll do that.
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges:
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I'm guessing you know to turn Turbo off when OC'ing, but then you did buy an ECS board for your water cooled system. What is your core voltage and QPI Link? Are you using a GPU? How are you cooling the chipset?
----------------------------------------This could also be to do with MSSE, or a physical problem (HDD more likely but RAM possible; disk check, ram check). You might want to check the logs, 4GB sounds fine, but you are running 8 threads on Win7, and when MSSE kicks in it can be greedy and does run at High Priority (time outs possible). When you chose to crunch for a mix of projects it does not mean that at any given time that mix is always being crunched. Good luck, [Edit 1 times, last edit by skgiven at Aug 31, 2010 11:09:07 AM] |
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges:
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I'm guessing you know to turn Turbo off when OC'ing, but then you did buy an ECS board for your water cooled system. What is your core voltage and QPI Link? Are you using a GPU? How are you cooling the chipset? This could also be to do with MSSE, or a physical problem (HDD more likely but RAM possible; disk check, ram check). You might want to check the logs, 4GB sounds fine, but you are running 8 threads on Win7, and when MSSE kicks in it can be greedy and does run at High Priority (time outs possible). When you chose to crunch for a mix of projects it does not mean that at any given time that mix is always being crunched. Good luck, Yes, the Turbo is off as well as all the power management options. I didn't buy this ECS board. I traded for it because I didn't need the expense of buying a board just to run the 860 as a cruncher. I won't do that again. I've had numerous discussions with ECS tech support but they were of little help. There are numerous posts at newegg about the problems this board has with overclocking but it's been running @ 3.6 Ghz for months without issues until the computation errors started a few days ago. Like i said earlier, I'm going to finish what's in cache and then try Linux and see what happens. With far fewer services running Linux should work better. The core voltages and QPI link speed are where they should be for the OC I'm running. I've run chkdsk and memtest and the HDD and memory are fine. There are 3 120mm fans pulling air into the case, 1 of which blows directly on the mobo so heat is not an issue.
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
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RT
Master Cruncher USA - Texas - DFW Joined: Dec 22, 2004 Post Count: 2636 Status: Offline Project Badges: 
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I'm guessing you know to turn Turbo off when OC'ing, but then you did buy an ECS board for your water cooled system. What is your core voltage and QPI Link? Are you using a GPU? How are you cooling the chipset? This could also be to do with MSSE, or a physical problem (HDD more likely but RAM possible; disk check, ram check). You might want to check the logs, 4GB sounds fine, but you are running 8 threads on Win7, and when MSSE kicks in it can be greedy and does run at High Priority (time outs possible). When you chose to crunch for a mix of projects it does not mean that at any given time that mix is always being crunched. Good luck, Yes, the Turbo is off as well as all the power management options. I didn't buy this ECS board. I traded for it because I didn't need the expense of buying a board just to run the 860 as a cruncher. I won't do that again. I've had numerous discussions with ECS tech support but they were of little help. There are numerous posts at newegg about the problems this board has with overclocking but it's been running @ 3.6 Ghz for months without issues until the computation errors started a few days ago. Like i said earlier, I'm going to finish what's in cache and then try Linux and see what happens. With far fewer services running Linux should work better. The core voltages and QPI link speed are where they should be for the OC I'm running. I've run chkdsk and memtest and the HDD and memory are fine. There are 3 120mm fans pulling air into the case, 1 of which blows directly on the mobo so heat is not an issue. Trying this machine on Linux is a great way of getting rid of any concerns about software. It is my guess that you will experience the same sorts of problems. At least that way it will be clear that the problem is hardware and most likely the mobo. Good Idea! Edit>spelling ---------------------------------------- [Edit 1 times, last edit by RT at Sep 1, 2010 4:55:49 PM] |
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JmBoullier
Former Community Advisor Normandy - France Joined: Jan 26, 2007 Post Count: 3716 Status: Offline Project Badges: 
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Trying this machine on Linux is a great way of getting rid of any concerns about software. It is my guess that you will experience the same sorts of problems. Particularly if you test it with HCC WUs. They are the most efficient WUs in a 64-bit Linux and, thus, they are also the most demanding (I think you say "there is no free lunch" in your country  ). |
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges:
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Overclocked systems degrade over time, some very rapidly. At stock, or close the board would probably be fine but at higher voltages it might continue to be problematic.
----------------------------------------o/t [Edit 3 times, last edit by skgiven at Sep 3, 2010 9:15:30 AM] |
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nanoprobe
Master Cruncher Classified Joined: Aug 29, 2008 Post Count: 2998 Status: Offline Project Badges:
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The computation errors for now have stopped but I'm still going with the plan to switch when the cache is used up.
----------------------------------------[ot] Does Linux give better points, or just the same as windows. I keep hearing that it is about 50% faster for HCC, but do people get 50% more points using the current system or not? If it is faster it should reward better. Perhaps an x64 app would help change the points system – which may be in need of a rethink given the CPU time vs reported time situation.[/ot] I have done some limited testing using Linux and Win7 Pro on the same machine running the same projects. Linux crunches faster but you do get awarded less points. For me, I'd rather have the faster speeds. Nothing is gained by points awarded except bragging rights and that's not why I do this. JMHO. And FWIW, I found that my AMD X6 1055 on Linux finished more WUs in a day than my i7-920 when the i7 was running Win7. Both were running at the same clock speed and crunching the same projects. Now that I have switched the i7 to Linux they are about dead even. Who wudda thunk.  
In 1969 I took an oath to defend and protect the U S Constitution against all enemies, both foreign and Domestic. There was no expiration date.
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