Message boards :
Number crunching :
Validation Error's , what is invalid in these WU's
Message board moderation
Author | Message |
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Fred J. Verster Send message Joined: 21 Apr 04 Posts: 3252 Credit: 31,903,643 RAC: 0 |
Hi, noticed a few strange validation error's, This one This one This one This one And this one has a -9 result overflow, 31 pulses/spikes found. Can anyone explain? |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14650 Credit: 200,643,578 RAC: 874 |
Can anyone explain? We've tried, many times before, but here's another go. When a task is completed, two things happen. First, a result file is uploaded to a data storage server at Berkeley. Second, the task is reported to the database server as being ready for validation. In order for validation to take place, both uploaded files have to be retrieved from the data storage server, transferred to the database server, and compared. If they match, great. The science is accepted, and you get credit. If they don't match, the validation is inconclusive, and the task gets sent out again. If one or both of the data files cannot be found, you get your 'Validation error'. The question is, why can't the data be found, when it's already been uploaded? Sometimes, it's because the user clicks 'update' too quickly, and the validator tries to access the file before the data storage server has finished all its housekeeping (indexing and so on). At other times - such as now, I suspect - it's because something's gone wrong in the network at Berkeley - the database server can't see all of the storage server, because of mounting or permission problems. My guess is that they will be checking for that sort of thing during maintenance today. |
Iona Send message Joined: 12 Jul 07 Posts: 790 Credit: 22,438,118 RAC: 0 |
Hi, noticed a few strange validation error's, I saw an odd result last week....the poor guy had crunched it out on a P4 with a stock application and his result exactly matched mine - I was the No 3, or should that be _2? The result that was not even remotely similar, got the credit! In fairness, it did seem that it was sorted out a few days later. I suspect Richard is probably correct about the reason....my result was uploaded and updated by the BOINC software, itself (getting some petrol at the time). My turn Don't take life too seriously, as you'll never come out of it alive! |
Labriskus Send message Joined: 20 Feb 07 Posts: 11 Credit: 745,920 RAC: 0 |
yup I've got 1 also http://setiathome.berkeley.edu/workunit.php?wuid=577859181 no biggie i guess |
[B^S] madmac Send message Joined: 9 Feb 04 Posts: 1175 Credit: 4,754,897 RAC: 0 |
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Fred J. Verster Send message Joined: 21 Apr 04 Posts: 3252 Credit: 31,903,643 RAC: 0 |
Thanks Richard, for your kind explanation, didn't see any error code, but forgot the check the total FLOPS, needed to complete and validate. Did read and got how the validation process, works. I would be ashamed, if I hadn't read about the validation process, by now or didn't get it :) Fortunatly, didn't see no error's, for today (March 3,2010). Also got Reschedule, to work again, BOINC lost it's connection to local host, after a Reschedule. (BOINC 6.10.18/WIN XP64/CUDA 2.3) |
JohnDK Send message Joined: 28 May 00 Posts: 1222 Credit: 451,243,443 RAC: 1,127 |
Think I've seen 1 validation error in all before today, not that I check everyday :) Now I suddenly have 4 in 1 day... http://setiathome.berkeley.edu/workunit.php?wuid=577404692 http://setiathome.berkeley.edu/workunit.php?wuid=577085451 http://setiathome.berkeley.edu/workunit.php?wuid=577085478 http://setiathome.berkeley.edu/workunit.php?wuid=576555998 |
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