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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: Computation error when missing network connection |
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Thread Status: Active Total posts in this thread: 20
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launila@gmail.com
Cruncher Joined: Aug 8, 2006 Post Count: 7 Status: Offline Project Badges: 
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Hi
I have searched all around the web about that problem and it seems that it is happening only with WCG. Does anyone know is there coming any fixes to that problem? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Three months no response, long in Linux distro world and another version of many build on *Ubuntu 11.10. Since, unparalleled WIFI stability, still passing this command through a script.
sudo iwconfig wlan0 power off And of course, scheduled networking for 30 minutes a day and the occasional times I'm at the keyboard. There's no plausible reason why this would only happen to WCG tasks and not to others and why when WIFI fails but not when Ethernet connection falters. 11.10 has a bunch of driver improvements and you do get client 6.12.33 from the repositories. If you have those, then don't know what else. Interrupt saturation causing heartbeat issues? At any rate, please visit My Grid > Result Status page and click on the Error link to open the result log. Copy that in a next post, so we can see what was recorded by the science application. Suspect to see what's already been mentioned in this thread. A Signal 11 or heartbeat entry. --//-- |
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges: 
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There's no plausible reason why this would only happen to WCG tasks and not to others Well, this is easily tested by you, just attach to some other projects, download some work, and run it alongside one WCG-task. If the WCG-task errors-out but not the other projects tasks at the same time, it's likely a WCG-specific bug. If all tasks errors-out alongside WCG, a BOINC-bug is more likely. If specific projects tasks errors-out but not other projects tasks, looking for similarities between the projects is an idea. Example if all the crashing applications is more or less from the same time-period, a buggy BOINC-API can be a reason, it can be a bug that's already been fixed so don't show-up in newer applications.  "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi.
I'll add my 2c worth, I've been having some network problems the last few days with water in the cabling outside in the ground so it's not my my wiring nothing i can do about it. And malariacontrol.net errors tasks if it has no comm's, i haven't noticed W.C.C. or other projects error tasks but Boinc does lock up, i'm running 6.10.58 on Ubuntu 10.04lts. |
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges: 
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I have had this same problem with GPUgrid WUs erroring on Linux if the network connection is lost.
----------------------------------------I wish I could recall exactly which WCG sciences it has happened on -- I know it kills off CEP2 WUs, but I also am sure some other WCG sciences' WUs have kept running at the same time (just can't recall which ones they were). I generally use the same procedure Sgt Joe described to protect against this problem.  |
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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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It fails all tasks from all projects!
Hit me today, ~150h of tasks lost from one outage on a couple of Ubuntu 11.10 rigs (repo installs). |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi.
I'll bring this one back to life, so Rosetta servers when down for a while today so Boinc couldn't upload results to them and so Boinc locked up and erred 2 C4CW tasks and 14 Malariacontrol.net tasks, all lost. So does anyone know if any of the newer Boinc's for Linux have fixed this problem yet, i'm runnng 6.10.58_64bit on Ubuntu 10.04lts, if there is i'll chage over in a flash. |
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launila@gmail.com
Cruncher Joined: Aug 8, 2006 Post Count: 7 Status: Offline Project Badges:
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Hi. I'll bring this one back to life, so Rosetta servers when down for a while today so Boinc couldn't upload results to them and so Boinc locked up and erred 2 C4CW tasks and 14 Malariacontrol.net tasks, all lost. So does anyone know if any of the newer Boinc's for Linux have fixed this problem yet, i'm runnng 6.10.58_64bit on Ubuntu 10.04lts, if there is i'll chage over in a flash. Thanks for bringing this one back to life. As far as I have heard even BOINC in Ubuntu 12.04 beta or newest Mint is not working any better. So I think that problem has not been fixed. And yes the problem seems to be in BOINC not any Linux distribution specific things. Perhaps this conversation should be started also at BOINC forums... There is also some serious new job download problems as long as there is any results in upload qeueu. Sometimes jobs stucks in queue and that will make big chaos I operator is not looking after BOINC for a while. |
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Yamgalf
Cruncher Sweden Joined: Aug 31, 2010 Post Count: 6 Status: Offline Project Badges:
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I have also the problem with Ubuntu 11.10.
----------------------------------------My internet connection (ADSL) is unstable. Running three windows computers, no problem but the wu's on ubuntu computer fails when internet connection is down. Thanks for advices. Suspendig network activity when crunching. [Edit 1 times, last edit by Yamgalf at Apr 14, 2012 1:14:38 PM] |
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BobCat13
Senior Cruncher Joined: Oct 29, 2005 Post Count: 295 Status: Offline Project Badges:
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After fighting this problem for quite a while, I installed dnsmasq on Ubuntu and so far have not seen any more tasks error out due to not being able to get DNS info from my ISP.
Here is the Ubuntu help page on dnsmasq: https://help.ubuntu.com/community/Dnsmasq |
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