sudo nm-connection-editorOriginally Posted by nanoprobe
sudo nm-connection-editor
Last edited by PoppaGeek; 02-10-2011 at 05:17 PM.
Question for you Linux guys. I am running a Ubuntu 10.10 pc on a wireless network. The wireless network went down for a few minutes yesterday and 2 days worth of WU's showed computation errors. I figured even without an internet connection it would countinue to crunch but it errored them all out. Is there something I can do to prevent this from happening again?
It was not the wireless going down that caused it. They crunch just fine without internet, just can not send or receive new or completed ones. Whatever took down wireless may have caused the failures. In other words the wireless going down may be a symptom of another problem. My internet went down for several hours, wired and wireless on 7 crunchers and 4 projects. No failures or errors.
If you're running with an overclocked PCI bus and it's become a little flakey then all manner of weirdness will ensue. Alternatively if running too hot (even at stock clocks) has caused memory corruption then there's no telling what might happen.
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The PCI bus is at 100 and the PC is in a room that is 50 degrees fahrenheit. The processor is lucky to see 40 degrees celsius. Once the wireless was back up an running it uploaded everything and downloaded new WU's and went back to crunching. It has been running now for about 36 hours without a hiccup. The only thing I can think to do is cut back my WU's to .10 of a day and kill the wireless and see what happens.
I need some help from the guru's. Just installed a second E5472 on my asus board. With one processor, processor was crunching at 100% with. Few dips. Installed 2nd chip and seems ubuntu 10.10 is throttling like crazy. My other dual processor E5420 on a asus board runs 100% with very little dipping. Only difference between boards is one has 800 fsb, the other is 677 fsb. This has me baffled as to why one is barely throttling and the other is throttling real bad. Any suggestions?
If you are using the GUI System Monitor it will really screw things up, it uses a much highier priority than anything else and WCG use just goes to nothing. Open a terminal window and use top. See how things are then and let us know.
cheers for that tip poppageek
here it is..
Haven't read the thread , but CEP2 is VERY disk intensive.
I only run 1 CEP2 WU at the time on my Hexacores,
Maybe that's why it's not running smooth?
I just switched from fighting aids. Did the same thing. What really ticks me off is my other rig,(dual E5420 on asus board 677 FSB) stays pretty much pegged at 100% crunching aids. Doesn't make sence. Both running ubuntu 10.10.
CEP2 is both disk I/O and memory intensive. VERY intensive for disk I/O. If the one throttling has a slower HDD installed you will notice it running CEP2 exclusively. I wouldn't mind betting that memory speed might actually make a difference with this project.
I notice you're using most of your installed RAM plus some swap space. Perhaps you could try adding some more RAM and see if that helps. Also, you don't (certainly shouldn't) need to leave boincmgr running. It's just an interface, not the client itself.
As for actual throttling try entering this in a terminal and then rebooting:
It will remove the ondemand CPU throttling system from all run levels and set the PCU to run at 100% speed constantly. Be warned that the system MIGHT run a little warmer after doing this.Code:sudo update-rc.d -f ondemand remove
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Jaco is right CEP2 will slow things down running that many. VERY disk intensive. WUs are waiting for IO. When not needed close Boinc Manager, that is what is causing Xorg to use so much. Why there are 9 CEP apps running I do not know. The one getting no CPU time has a different name.
That one might have been pre-empted for some reason. Possibly about to finish another one? Hard to tell.
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I had a machine running 8 CEP2 units. It was a dedicated cruncher. It would error out all of it's WUs within a few seconds of each other. After switching to using a ANS-9010 ramdrive the issue disappeared. There seems to be some kind of limit in Boinc for disk I/O. If things get too crazy the whole house of cards comes crashing down.
I found the old thread and on my SR-2 just starting 16 threads created 2.5GB of data written in a few seconds. An hour later 27GB had been written to the drive. At 36 hours 1.5TB had been written to the drive!
See http://www.xtremesystems.org/forums/...7&postcount=29
Last edited by josh1980; 02-15-2011 at 06:35 PM.
I'd be very careful running those units exclusively on a system with a SSD.
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Went ahead and reduced the number of wu's to 4 per day on both my harpertown crunchers. My fans a ramping up pretty good doing 100% cep2. I'll run that command in the morning after it dumps overnight. One big drawback with cep2 is it clogs the hell out of my Internet connection when uploading. Was hoping a 7200 rpm drive would keep up but I guess 8 running at the same time is a little to much. I swore I wouldn't come back to this project but hate looking at the green badge knowing I can ruff it a few months to get 2 years done. Thought I read they optimized the wu's a little better but looks to still be a royal PITA. Oh well. Thanks folks. Appreciate the help.
I heard the same, but "a little better" might only be a few %. I limit my machines to 3 because of the upload size. I'm not running any right now, but single core machines (at least mine anyway) HATED CEP2 units. 100% error rate. Never got it sorted, either. All my multicore machines run them with no trouble, aside for the big uploads choking the network. I did find that running a network proxy helps that as the units load to it first and then up, but it's not a huge benefit.
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Someone over at WCG turned me on to this web site for possible help with this.
http://www.experts-exchange.com/OS/L...peed-Tips.html
Tried a few things but it still throttled. Then I switched to CEP2. Probably a bad idea until I sorted this out. Anyone think I should try a reinstall to see if this would help?
Sometimes I am a little dense so if I am missing something help me out.
You have 8 WUs running. 4 @ 100%. If you take the % for Xorg and BoincManager and add those numbers to the remaining 4 you are 99-100% on the other 4.
This is a 8 core right machine right? You do not have to run BoincManger, I do not. Xorg will drop to low single digits if no X windows are open. You could also just not run X.
Last edited by PoppaGeek; 02-16-2011 at 12:44 AM.
Ya know, I plain forgot to check that. Out of a possible 800% (8 cores at 100%) top is showing a sum total of 797%, breaking that down that means the machine is at 99.6% total CPU utilisation. That's actually pretty good! All the tweaks in the world will not gain you any more than that last 0.4%, though ditching X and boincmgr will gain you the equivalent of 20% of one CPU (roughly) by removing competing processes.You have 8 WUs running. 4 @ 100%. If you take the % for Xorg and BoincManager and add those numbers to the remaining 4 you are 99-100% on the other 4.
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Woke up this morning to find error's up the kazoo. Reading the log shows right after it connected at 1am to do it's upload, what wasnt crunched went to errors. Decided to reduce even more to just 2 per machine. To much a royal PITA. Went ahead and assigned each core to performance instead of using commands in terminal. Will see what happens. Thanks again.
BTW, this is a 8 core machine. 2 E5472's.
Last edited by bearcatrp; 02-16-2011 at 03:42 PM.
Figured it out, by accident. Changed in the bios to not allow speed stepping, which locks the processor to it's highest speed. BINGO, am maxed at 100% at each core with minor dips periodically.
FYI- The package command for Ubuntu now installs 6.10.58 of Boinc.
sudo apt-get install boinc-client boinc-manager or
sudo apt-get update boinc-client boinc-manager
I discovered I'd forgotten to disable this on one of my Sossaman boards only a few days ago.This is something I normally look out for.
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