Message boards : Number crunching : sec/tstep increase
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Send message Joined: 11 Sep 04 Posts: 9 Credit: 321,368 RAC: 0 |
http://climateapps2.oucs.ox.ac.uk/cpdnboinc/show_user.php?userid=16598 My Athlon 64 system has been cranking out results for many months at around 2.00 to 2.10 sec/ts. Today I am now seeing it jumped up to 30 sec/ts then 16 then 11. What would cause this? Should I be worried? Keith |
Send message Joined: 7 Aug 04 Posts: 2187 Credit: 64,822,615 RAC: 5,275 |
> http://climateapps2.oucs.ox.ac.uk/cpdnboinc/show_user.php?userid=16598 > > My Athlon 64 system has been cranking out results for many months at around > 2.00 to 2.10 sec/ts. Today I am now seeing it jumped up to 30 sec/ts then 16 > then 11. What would cause this? Should I be worried? > > Keith > Looking at the trickles at: <a href="http://climateapps2.oucs.ox.ac.uk/cpdnboinc/show_host_detail.php?hostid=29407">http://climateapps2.oucs.ox.ac.uk/cpdnboinc/show_host_detail.php?hostid=29407</a> It looks like one model (407692) bombed out with an error after 7 trickles, it downloaded another one, yet somehow internally kept the start time as that of when you started 407692. So its sec/ts calculation is screwed up. It shouldn't be a problem. |
Send message Joined: 11 Sep 04 Posts: 9 Credit: 321,368 RAC: 0 |
What would cause it to "Bomb out"? Hardware problem or just a software error? |
Send message Joined: 7 Aug 04 Posts: 2187 Credit: 64,822,615 RAC: 5,275 |
> What would cause it to "Bomb out"? Hardware problem or just a software error? > Difficult to say, but a possible hardware problem (i.e. proc running too hot, or not enough voltage, or RAM running on too tight timings, or not enough RAM voltage). Are you overclocking? Looks like that PC has completed two runs and errored on three others. |
Send message Joined: 11 Sep 04 Posts: 9 Credit: 321,368 RAC: 0 |
That one is slightly overclocked but I ran Prime 95 without errors and haven't had any strange behavior from it. The funny thing is that it looks like very machine I have, most of which aren't overclocked at all, have lots of client errors. Keith |
Send message Joined: 7 Aug 04 Posts: 2187 Credit: 64,822,615 RAC: 5,275 |
> That one is slightly overclocked but I ran Prime 95 without errors and haven't > had any strange behavior from it. The funny thing is that it looks like very > machine I have, most of which aren't overclocked at all, have lots of client > errors. > > Keith > If you've done the basic hardware maintenance from this thread http://www.climateprediction.net/board/viewtopic.php?t=2124 and hardware specific tests from this thread http://www.climateprediction.net/board/viewtopic.php?t=2126 successfully, then I don't know. Other problems can come about if not suspending and exiting BOINC before rebooting, although they don't seem to be the -5 errors. |
Send message Joined: 11 Sep 04 Posts: 9 Credit: 321,368 RAC: 0 |
It looks like the WU that had errors on mine also had errors on other computer when they were sent to them. Could it be that the WU was bad or flawed? Or that BOINC was having a problem or glitch? Keith |
Send message Joined: 7 Aug 04 Posts: 2187 Credit: 64,822,615 RAC: 5,275 |
> It looks like the WU that had errors on mine also had errors on other computer > when they were sent to them. Could it be that the WU was bad or flawed? Or > that BOINC was having a problem or glitch? > > Keith > It's possible. On the other hand, On two work units that I got on my PCs that were sent out in early October, each to 3 other PCs. Only one other was returned besides mine, i.e. 3 out of 8 were successful, the other 5 returned errors. I went through checking about 300 models sent out in early October. Each of these were sent to 4 different PCs. About half didn't have anyone complete them, about 3/8ths had only one person complete it (although some still had other PCs crunching on the work unit), and about 1/8 had more than one person complete the model. Of those, only 2 were completed by 3 people, and none completed by all 4. So while it's possible that the models would go unstable due to different parameter sets, the greater likelihood is that many people are having hardware or software configuration problems. |
Send message Joined: 11 Sep 04 Posts: 9 Credit: 321,368 RAC: 0 |
Well, I generally run Prime 95 torture test for about 4 hours then consider it stable. I also play alot of games and figure that if they don't crash or have problems then I am most likely ok. I am by nature though the type of person that is driven crazy by thinking my system might be causing the errors. Guess I shouldn't be overclocking. :) Anyway I am going to try running Prime 95 for 24 hours on my other system that has had lots of Client Errors and see what that shows. Keith |
Send message Joined: 17 Aug 04 Posts: 753 Credit: 9,804,700 RAC: 0 |
Worriers will love(?) UK_Nick's testing suggestions at the top of the page <a href="http://www.climateprediction.net/board/viewforum.php?f=23">here</a> on the community forum, though it was written for CPDN classic so there are no references to BOINC. |
Send message Joined: 5 Aug 04 Posts: 186 Credit: 1,612,182 RAC: 0 |
I'm currently following my own advice with 'Dilly' - she's upchucked a whole bunch of models these last few days - so she's running her latest model along with Prime95 at priority 4 thus they're both using 50% of the CPU... <a href="http://www.nmvs.dsl.pipex.com/"><img src="http://boinc.mundayweb.com/cpdn/stats.php?userID=6&team=off&trans=off"></a> <a href="http://www.nmvs.dsl.pipex.com/">Distributed Mania</a> |
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