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Database Crash
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Author | Message |
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Send message Joined: 28 Sep 04 Posts: 8 Credit: 61,409 RAC: 0 |
On Jan 26 LHC had a database crash, and it should now be fixed and the base is up again... Well, not quite :( 21 of my results are lost. They have been returned according to my log, but tomorrow the time limit is up, and the results are not listed. I haven´t checked, but does my computer save a copy of the results or are they deleted when sent? I am, of course, thinking about the posibility of making the computer resend the missing answers. Info anybody? Thanks and have a nice week-end ChrisD |
Send message Joined: 18 Sep 04 Posts: 163 Credit: 1,682,370 RAC: 0 |
On Jan 26 LHC had a database crash, and it should now be fixed and the base is up again... That's what a crash is all about :(
The results were uploaded and reported. So they are gone from your client.
If you are worried that any science might be lost: BOINC will resend the work when your result expires. If you are worried about your credits: You will probably not get any for them. Michael Team Linux Users Everywhere |
Send message Joined: 13 Jul 05 Posts: 456 Credit: 75,142 RAC: 0 |
If you are worried about your (or your team's) ranking in the stats, it affected everybody who sent in work during a ~12hr period, so the effect will be shared out across most participants, and rankings will not be affected as much as if it was just you that suffered. Almost all of us are affected, and it was nobody's fault. The notice saying it was fixed meant that results were once more being recorded properly, not that the lost results were recovered. I am sure Chrulle has had a look to see if any results can be recovered - but unless we see another announcement I think we should all assume that anything that is lost will stay lost. The best thing to say is that it doesn't happen often... |
Send message Joined: 27 Jul 05 Posts: 4 Credit: 440,478 RAC: 0 |
I thought that CERN wasn't able to lose electricity. How did that happened? |
Send message Joined: 2 Sep 04 Posts: 545 Credit: 148,912 RAC: 0 |
I thought that CERN wasn't able to lose electricity. How did that happened? Forgot to pay the bill I suppose ... |
Send message Joined: 17 Jul 05 Posts: 102 Credit: 542,016 RAC: 0 |
SSL must have bundled their breaker with BOINC |
Send message Joined: 13 Jul 05 Posts: 456 Credit: 75,142 RAC: 0 |
I thought that CERN wasn't able to lose electricity. How did that happened? It is true that CERN has separate connections from both the French and Swiss national power grids - it would take both those grid circuits to go down for the big machines to lose power. Also, if it is the same as it was when I was there in the '70s, the domestic powor around the CERN site does not come of the grid power that supplies the big machines, but from the normal municipal supply like any other business in the canton. That way the power surges as they turn the big machines on and off do not make the lights flicker over the whole site... Even if that were not so, parts of the CERN site can go down just like a few streets can go down when the rest of the city is still powered. Or someone can trip the breakers for a single building... or part of a building. R~~ |
Send message Joined: 27 Jul 04 Posts: 182 Credit: 1,880 RAC: 0 |
It was indeed only the IT building that lost its power. The problem was with the new local substation that is needed to supply the computer centre with power. Here is the explanation from the technical guys:
Chrulle Research Assistant & Ex-LHC@home developer Niels Bohr Institute |
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