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Number crunching :
LHC@Home now open
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MikeW Send message Joined: 7 Apr 04 Posts: 71 Credit: 10,406 RAC: 0 |
The Large Hadron Collider project at CERN in Switzerland has now opened its BOINC project for Beta, if you're interested in crunching yet another project. Get more info here Giskard - the first telepathic robot. |
Sir Ulli Send message Joined: 21 Oct 99 Posts: 2246 Credit: 6,136,250 RAC: 0 |
Thanks for this Info, Sir Ulli who is waiting for http://www.physics2005.org/events/einsteinathome/ Greetings from Germany NRW Ulli [/url] |
Tony Martin Send message Joined: 5 Dec 99 Posts: 91 Credit: 69,723 RAC: 0 |
They are open for beta testing but at the moment they have no work to send. Where have I heard that before? Go to this web site to join up. http://lhcathome.cern.ch/ Happy BOINCing |
Alex Send message Joined: 26 Sep 01 Posts: 260 Credit: 2,327 RAC: 0 |
> They are open for beta testing but at the moment they have no work to send. > Where have I heard that before? > > Go to this web site to join up. > > http://lhcathome.cern.ch/ > > Happy BOINCing > > After attaching to that project, none of my other seti projects work. Seti, Climate prediction. Now all the work units die a horrible death. |
Alex Send message Joined: 26 Sep 01 Posts: 260 Credit: 2,327 RAC: 0 |
> They are open for beta testing but at the moment they have no work to send. > Where have I heard that before? > > Go to this web site to join up. > > http://lhcathome.cern.ch/ > > Happy BOINCing > > Thanks. That just killed all my seti projects. |
Paul D. Buck Send message Joined: 19 Jul 00 Posts: 3898 Credit: 1,158,042 RAC: 0 |
Way cool... Thanks guys ... Though you know this is going to bend my work schedule! I am working on a new version of my documentation that allows the internal switch from one project to another ... I am in the process of converting pages now I hope to have the first batch up this week (the lord willing!) ... I guess it is best this way, I now know before I get too much into the conversion (though I already have about 20 pages done) ... and yes, I did include Folding@Home ... Any others on the horizon? And if so, can you send me a wake-up e-mail at p.d.buck@comcast.net (just so I don't miss any posted in a thread I don't read) ... Thanks again! And I got a work unit! |
Thierry Van Driessche Send message Joined: 20 Aug 02 Posts: 3083 Credit: 150,096 RAC: 0 |
For info: crunching 1 WU will take some 10-11h. |
Paul D. Buck Send message Joined: 19 Jul 00 Posts: 3898 Credit: 1,158,042 RAC: 0 |
> For info: crunching 1 WU will take some 10-11h. Thierry, Hi ... :) I haven't said that recently ... My fault entirely though ... I went through a bad month ... But I saw that ... I got one QU already ... CPDN looks to be about 600 hours with SAH saying 3 to 4 hours ... Predictor is best on a pure WU basis ... they are done in an hour ... I am eagerly awaiting the day that the Mac gets a GUI version of BOINC ... I saw a group has made binaries that use the full features of my G5 machine ... I am surprised that I have not seen any of the Intel crowd offering optimized science application compiles yet ... or maybe I have not been looking hard enough ... |
Tony Martin Send message Joined: 5 Dec 99 Posts: 91 Credit: 69,723 RAC: 0 |
> > They are open for beta testing but at the moment they have no work to > send. > > Where have I heard that before? > > > > Go to this web site to join up. > > > > http://lhcathome.cern.ch/ > > > > Happy BOINCing > > > > > > Thanks. > > That just killed all my seti projects. > > > Sorry to hear it caused a problem for you. I'm attached to the climate prediction along with LHC@home and I'm not having any problems. It works for 1 hour on Climate prediction and then works for 1 hour on LHC@home switches back and forth ok on my machine. Do you have the setting to keep work units in memory set to yes in your general settings for climate predicition & Seti? |
Thierry Van Driessche Send message Joined: 20 Aug 02 Posts: 3083 Credit: 150,096 RAC: 0 |
> > For info: crunching 1 WU will take some 10-11h. > > Thierry, > > Hi ... :) I haven't said that recently ... > > My fault entirely though ... I went through a bad month ... > > But I saw that ... I got one QU already ... CPDN looks to be about 600 hours > with SAH saying 3 to 4 hours ... Predictor is best on a pure WU basis ... they > are done in an hour ... Hi Paul, Glad to see you're their also. Looks like you will have once again some more work to do ;o) Hope you'll do better this month. Wish you all the best. Boinc is really a great project. Best greetings |
Janus Send message Joined: 4 Dec 01 Posts: 376 Credit: 967,976 RAC: 0 |
The LHC beta is now closed for further account creating I'm sorry. A massive invasion during the first 24 hours caused this. |
One Hot Minute Send message Joined: 3 Apr 99 Posts: 33 Credit: 4,981 RAC: 0 |
I accidently created two accounts, if anyone wants the unused one leave your email addy and I will forward the details to you. <a> [/url] Artificial intelligence is no match for natural stupidity. |
Heffed Send message Joined: 19 Mar 02 Posts: 1856 Credit: 40,736 RAC: 0 |
> The LHC beta is now closed for further account creating I'm sorry. A massive > invasion during the first 24 hours caused this. They only had 1000 accounts available to begin with. WUs take between 6 and 8 minutes on my machine. (yes, this is after the bad WU bug has been fixed) Processes happily alongside CPDN and S@H. |
Janus Send message Joined: 4 Dec 01 Posts: 376 Credit: 967,976 RAC: 0 |
> They only had 1000 accounts available to begin with. Yes but who would have expected them to be allocated already after 24 hours? |
Angstrom Send message Joined: 20 Sep 99 Posts: 205 Credit: 10,131 RAC: 0 |
> WUs take between 6 and 8 minutes on my machine. (yes, this is after the bad WU > bug has been fixed) They indicating approx 10 hours on mine. Admitedely its an old 500 MHz laptop but all the same this seems to be a massive difference. Are you sure you havent got a bunch of WU's that are showing the beam failing in just a few cycles? If this situation is detected the client stops computation and returns the result thus giving the appearance of a very short WU. |
lg_martian Send message Joined: 26 Feb 04 Posts: 13 Credit: 42,079 RAC: 0 |
> > WUs take between 6 and 8 minutes on my machine. (yes, this is after the > bad WU > > bug has been fixed) > > > They indicating approx 10 hours on mine. Admitedely its an old 500 MHz laptop > but all the same this seems to be a massive difference. Are you sure you > havent got a bunch of WU's that are showing the beam failing in just a few > cycles? If this situation is detected the client stops computation and returns > the result thus giving the appearance of a very short WU. > > > on my 1.6 GHz machine it indicates about 8 and a half hours, but the units actually finish in about 20-25 minutes |
Angstrom Send message Joined: 20 Sep 99 Posts: 205 Credit: 10,131 RAC: 0 |
> on my 1.6 GHz machine it indicates about 8 and a half hours, but the units > actually finish in about 20-25 minutes I just checked back to my laptop and now its had a chance to crunch for a while it is indicating 29 hours for the first work unit. Currently it is 9% completed in 3Hrs 2 min. I think I read somewhere about three types of WU's. The difference was the number of cycles calculated so I guess there are at three levels of computation depending on the units youve recieved. We ought to move this thread over to the LHC message boards. |
MikeW Send message Joined: 7 Apr 04 Posts: 71 Credit: 10,406 RAC: 0 |
>>We ought to move this thread over to the LHC message boards. Absolutely, since a lot of this has been covered there. However, for those who missed the cut: LHC runs simulations of particle beams circulating in an accelerator. Nominally the simulations run for 10,000 turns, 100,000 turns or 1,000,000 turns. In practice I think only the largest are being issued. The simulation starts with 60 particles. As it proceeds some of these particles reach the edge of the beam and are lost. Exactly when this happens, and how many are lost depends on the parameters supplied to the simulation, and cannot be predicted - that's what the simulation is for. As the number of particles reduces computation runs faster. Under some unstable conditions the simulation can lose all its particle, in which case the WU completes. This is a chaotic system - the instability can potentially occur at any time. Even if the simulation has completed the bulk of its circuits it can complete abruptly as all the particles leave the beam in a few cycles. More on LHC@Home Giskard - the first telepathic robot. |
Atangel Send message Joined: 14 May 99 Posts: 61 Credit: 1,024,161 RAC: 0 |
> LHC runs simulations of particle beams circulating in an accelerator. > Nominally the simulations run for 10,000 turns, 100,000 turns or 1,000,000 > turns. In practice I think only the largest are being issued. > > The simulation starts with 60 particles. As it proceeds some of these > particles reach the edge of the beam and are lost. Exactly when this happens, > and how many are lost depends on the parameters supplied to the simulation, > and cannot be predicted - that's what the simulation is for. As the number of > particles reduces computation runs faster. Under some unstable conditions the > simulation can lose all its particle, in which case the WU completes. This is > a chaotic system - the instability can potentially occur at any time. Even if > the simulation has completed the bulk of its circuits it can complete abruptly > as all the particles leave the beam in a few cycles. > Yet, I had a couple of work units this afternoon where I lost all my particles. I hope they blame the magnents.... I didn't mean to.. wait... but that was the point, wasn't it!!!! |
FalconFly Send message Joined: 5 Oct 99 Posts: 394 Credit: 18,053,892 RAC: 0 |
Hi :) Just joined the BOINC train (albeit with only one machine, the rest has to remain on SETI Classic for now)... I joined the LHC@Home Beta, and all is running fine (Resources are shared among CPDN and SETI). That "1 Million Particles" run seem to be mostly stable, looks like 6.5 hours for that Athlon64 3200+ . |
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