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1)
Message boards :
Number crunching :
We will NOT be crunching the results of the LHC collisions
(Message 22205)
Posted 5 Apr 2010 by Kaal Post: So what is the point of this Boinc project? The point of this project *was* to help design the LHC and as Neasan said, it\'s down to this project that the LHC is as well designed as it is. The point of keeping it active, AFAIK, is so that non-time-sensitive data *could* be dumped out to us as the scientists need it. It may also be that as new experiments are integrated into the LHC new beam alignment data will need to be crunched and we\'re all set up to do that. So, if the politics doesn\'t get in the way, the project should be around and we should be available to do the work as it\'s needed. It\'s been said before and I\'ll repeat it here that we\'re here to support the scientists because it\'s something we believe should be supported. In the meantime there are other projects which we can reasonably spend out spare cycles on while we wait for data that needs to be crunched in our own especial way. :) |
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2)
Message boards :
Cafe LHC :
Whatever happened to LHC@home....apologies and thanks.
(Message 21948)
Posted 5 Mar 2010 by Kaal Post:
Absolutely! Reading both on and between the lines it seems that lhc@home might have died an ignominious death without Eric\'s efforts. Three cheers, that man! :D |
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3)
Message boards :
Number crunching :
Ok...who got lucky?
(Message 21897)
Posted 27 Feb 2010 by Kaal Post: There may be other issues though. If I remember rightly the difference is normal for these WUs. For the beam integrity computations we were doing before (and I assume it\\\'s something similar we\\\'ll be doing again) the short runs indicate scenarios where the beam strikes the wall almost immediately and the longer WUs indicate complete (or nearly complete) turns. Both are valuable from the modelling standpoint. :) HTH & HIR. :) |
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4)
Message boards :
Cafe LHC :
Whatever happened to LHC@home....apologies and thanks.
(Message 21888)
Posted 26 Feb 2010 by Kaal Post: STOP PRESS; running some test jobs, very short, Excellent news! Waiting with baited breath. :) |
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5)
Message boards :
Number crunching :
WUs being rejected? Very short processing time.
(Message 19652)
Posted 22 May 2008 by Kaal Post: This question comes up quite frequently (actually both Qs: "Why so short...?" & "What's happening with the long term pending...?") Perhaps a sticky from N&A with the answers? Q: "Why did my WU only last mere seconds?" A: Because the 'beam' hit the 'wall' in the simulation. Don't worry it's still valid science which they need. Q: "I've got some results with 0.0000...{insert tiny number} credit which have been hanging around for ages. What's up with that?" A: Those results are from the short 'hit the wall' runs and (as I understand it) a server-side upgrade of the BOINC software is needed before a comprehensive clear-out can happen. Q: "Will the server-side software upgrade happen any time soon?" A: Haaaaaahahahahahaha! |
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6)
Message boards :
Number crunching :
It's raining LHC WU's - I love it !
(Message 18729)
Posted 18 Dec 2007 by Kaal Post: Hi folks! I can't see any reason why you wouldn't be getting work unless the machines aren't up & connected when the work's around. It's not a continuous stream, just fits and starts. Check that you don't have "no new work" set. If nothing else works try resetting the project from your client. |
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7)
Message boards :
Number crunching :
Is there?....or...I want....!
(Message 18688)
Posted 10 Dec 2007 by Kaal Post: Assuming you're on some kind of *nix with libxml2 installed: [ `/usr/bin/xmllint http://lhcathome.cern.ch/lhcathome/server_status.php?xml=1 | awk -F\\> '/results_ready_to_send/{print $2}' | sed 's/<.*$//'` -gt 0 ] && (cd $BOINCHome; ./boinc_cmd --project http://lhcathome.cern.ch/lhcathome/ update It's quick and dirty but it should be cronable with a bit of tweaking for your system. HTH |
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8)
Message boards :
LHC@home Science :
LHC Project Data
(Message 18584)
Posted 12 Nov 2007 by Kaal Post: How much data will be generated each year when LHC becomes operational in 2008? I seem to recall reading about this somewhere but can not find it. All I know is that the volume of data to be generated will be very large! THis is the best info I could find on that. :) |
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9)
Message boards :
Number crunching :
LHCSTATS by bluenorthernsoftware doesn't work any more
(Message 17348)
Posted 13 Jul 2007 by Kaal Post: @dr_mabuse: Scarecrow's (the guy that runs this stats graphs site @ bluenorthern) already started a thread on this. @Neasan: With your oh-so-many spare moments it'd be cool to talk to Scarecrow about this. Although not essential it is damned handy. :) |
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10)
Message boards :
Number crunching :
The new look bugs
(Message 17312)
Posted 9 Jul 2007 by Kaal Post: Seeing this on the front page... LHC@home News |
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11)
Message boards :
Number crunching :
Fairer distribuiton of work(Flame Fest 2007)
(Message 15200)
Posted 27 Oct 2006 by Kaal Post: I would prefer that there are only a fixed number (say 5) of workunits (of this project) on a PC at a time. Before the PC loads another workunit it must upload a workunit. This is more restrictive but will not slow down activities of fast PCs. Hmmm, I think I might agree if I could see a simple implementation, but one of the objections to River's first proposal was that it might require software re-writes, as I think yours would. John Keck's proposal merely requires 2 lines of the server-side config.xml to be changed, as I understand it. Given that this is a temporary situation (given Garield) and that John's solution would adeqately (perhaps not perfectly, but certainly adequately) fix the problem, improving moral whilst not damaging the response to science, I think that his has to be the way forward. :) |
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12)
Message boards :
Number crunching :
Fairer distribuiton of work(Flame Fest 2007)
(Message 15198)
Posted 27 Oct 2006 by Kaal Post: @Tomas So you're suggesting something like this? :) If so, I'd agree. Keck Komputers seems to have the right of it, but River's later suggestion of extending the poll time in that solution out to 20 minutes also holds merit to allow those hosts in the 4hr back off to have a better chance of getting a WU. |
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13)
Message boards :
LHC@home Science :
So, neutrinos have mass, then...
(Message 13212)
Posted 31 Mar 2006 by Kaal Post: Neutrino story on the Beeb. Thoughts? |
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14)
Message boards :
Number crunching :
Is the user base/project participants growing a bit too large, for our server?
(Message 12969)
Posted 9 Mar 2006 by Kaal Post: Consider also that Cern & the EU have been dumping funds into the Datagrid (http://public.eu-egee.org/) for the immediate future. It's planned to up to speed by the time the LHC comes online. If it fails in it's expected throughput there is the off chance that LHC@home will be poked to see if it can pick up the slack (after all if the application is grid aware it might be preferable to have the last few results a little slower in reporting) while the next experiment is using 'the grid'... I concur with River~~ that LHC@home won't be canned as it is too valuable a potential resource. What if a new experiment needs to be put in place? The LHC can't be shut down for years while tests are performed. Models will have to be runa nd within budget constraints, to be sure. No, LHC@Home won't disappear but its use may be small and/or intermittent. In terms of BOINC and other projects, Right now the highest profile seems to be CPDN and with the press coverage that is generating it may only be a couple of years before DC/BOINC is considered to be a standard option for utility computing. There's gonna be work for quite some time to come between the various projects and it's entirely possible that the LHC or any successor will supply that work. |
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15)
Message boards :
LHC@home Science :
Similarities
(Message 12860)
Posted 24 Feb 2006 by Kaal Post: I was hoping someone could point me in the right direction to get a somewhat vague question answered. Have a gander at this :) |
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16)
Message boards :
Cafe LHC :
Similarities
(Message 12853)
Posted 24 Feb 2006 by Kaal Post: This would be a fine question to post on the LHC Science forum. A good starting point would be tha hawking books. :) |
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17)
Message boards :
LHC@home Science :
Cosmology, who needs it?
(Message 12680)
Posted 8 Feb 2006 by Kaal Post: another hawking book that's a bit more up-to-date on branes, etc is: The Universe in a Nutshell. Cheers. |
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18)
Message boards :
Number crunching :
Jukka Klem, please fix the validator / database problem?
(Message 12463)
Posted 26 Jan 2006 by Kaal Post: As with the others here, 5 results are showing as if they hadn't been reported... *shrug* If they got the results back and all we're missing is a few creds then nairy fuff, I say. :) |
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19)
Message boards :
Cafe LHC :
WU Hoarding
(Message 11556)
Posted 3 Dec 2005 by Kaal Post: It seems to be a fact that some people tend to hoard WU's for this project. Indeed. I've got a couple of machines and the settings mean I usually grab about 6 WUs over a few days. I then often spend a couple of weeks waiting for more WUs to be available, as the slower machines & hoarders gradually crunch through their units. :( |
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