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21)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19518)
Posted 22 Apr 2008 by  Paul D. Buck
Post: To be honest, I don't care about upgrading the server software, or clearing out old pendings, or old computers... I am one of those radicals the man talked about in the LHC presentation ... "Where else do you have a computer center that begs you for more work?" ... Gimmie, Gimmie, Gimmie ... :) If nothing else, the pitch can be that while the dedicated network they have been building can be used as the main data analysis ... I am sure that there is some other task that is planned to run, or is running, on that set of systems ... maybe that is what we should be looking at? Just one more thought ... When I was given a tour of the San Diego Supercomputer center at UCSD (yes I touched the Cray they had at the time), they used to run the applications and data on a Cray "look-alike" clone, a mini-Cray that executed the Cray instruction set before they wasted time on the big iron running something that was going to fail ... could that be another possiblility? |
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22)
Message boards :
Number crunching :
Muon accelerator design via BOINC
(Message 19509)
Posted 21 Apr 2008 by Paul D. Buck
Post: I am running Einstein with share 200, SETI, QMC, climateprediction.net, CPDN.beta and LHC with share 100. All this on an Opteron 1210 dual core running SuSE Linux 10.3. I have lots of pending credits in Einstein and SETI, none in QMC.Gruss Gott(add the umlaut). Well, I have a couple more than that ... :) At the moment I am not doing much on EaH as I have it in the relative position I want it to be in ... ahead of SaH ... now I need to get several other projects in their initial positions and start pushing them up in numbers ... I am working on the easier ones at the moment ... pushing Sztaki up the last two days along with a couple of others ... M-Way among them ... I am running my Old dual G5, a Dual Xeon with HT (3.2 GHz) an AMD dual core (4400?), a 3 GHz HT intel something, a real old single core AMD and my shiny new dual Quad (8 core) Mac Pro which does as much if not lots more than the others combined. If I can stay interested, and healthy (if BOINC does not start to mess up my mind again) I am looking forward to getting a couple quad cores (dual quads?) late this year early next to replace the slower systems ... |
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23)
Message boards :
Number crunching :
Muon accelerator design via BOINC
(Message 19503)
Posted 21 Apr 2008 by Paul D. Buck
Post: Projects for BOINC: Actually, if you look at my signature ... :) I am, have, done work for QMC ... LOTS of work for Einstein, Spinhenge, uFluids and Cosmology are on the list, but it is going to be a couple days before I get to them ... In the second group most started and either died or were completed. The problem is that the participants rarely know because there is no central "brain" that records information like this ... One of *MY* problems is that many of the pure physics projects are Windows only and I am slowly (it seems) changing into a Mac house ... so, my decreased store of Win Pcs are stretched to support the projects as I would like. Today I fired up a real old PC to play with installing Ubuntu so I would get some Linux experience under my belt ... well, it has been running BOINC most of the day today ... So, I guess I succeeded ... :) Another PC I stood up a few days ago I will be giving to a friend (well, wife's friend) as her computer is even older and slower ... I worked on her guilty feelings so she will let it run for a month or so ... I get the use of her electric and the computer works for me ... :) I loaned my brother a dual Xeon (64 bit) Dell and he is shipping that back (hopefully this week) so I need to dust that off as he is not sure it works (Have service contract I think on it, so that should be no problem, Ha!) ... Well, we shall see ... In the mean time, I am playing with a lot of the projects to see if they run well or not ... and soon I will be settling in with a crop with Cosmology and QMC being on the short list for the remaining PCs I have ... CPDN is playing well on the new Mac Pro so I can run that there ... as a matter of fact I think I can run almost all 20 projects on the one machine and do a work unit on each every day, or every other day ... (we shall have to see) ... right now I am getting experience with the projects and getting the initial score to a "target" and then in a week (should not be a full month I don't think) and I will be down to just production. And that is one of the reasons I don't care for the Alpha projects, some of them are too unstable ... and the same for some of the Betas ... though I have to admit that I have had surprisingly few problems ... AI crashed a couple tasks and locked the machine up (though I may have fixed that) and YoYo has one application that runs for an hour and does (apparently) nothing ... excluding that application and I have been getting work done (though I have had some tasks got to 125%+) ... But thanks for the suggestions ... |
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24)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19498)
Posted 19 Apr 2008 by Paul D. Buck
Post:
Someone did, but, the amount is dropping like a stone ... and I cannot capture 10 sets across my old farm ... sigh ... only three windows machines left ... and one of them soon gone ... ah well ... LHC never promised us much I have to give them that ... But, hope springs eternal in a puppy's and a cruncher's heart ... |
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25)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19495)
Posted 19 Apr 2008 by Paul D. Buck
Post: Right now a deal on a fast quad will tempt me enough to order it when the wife isn't looking Well, I am giving away an older machine and am "testing" it ... :) I think the next visit I will have to actually part with it... BUT, I am hoping to "guilt" the person I will give the system to ... to let me have her run it all the time for a month or two so i get another two months of production out of it ... Then, when I think I can afford a quad I think I will swap her for the older one, give her a slightly faster one, put the quad in the slowest machine and I can guilt her into another couple months of work ... The wife is NOT going to let me run 10 computers in the house again ... The only good news is that the 8 cores in the Mac Pro really go through the work... so, with luck I can go through my older machines and in a year, year and a half I can have two Quad cores running ... Not sure I can really upgrade the dual Xeon Dell I have with a new MB as it is in this "funky" case ... Heck, before I started to "inflate" my RAC by rapidly switching projects I was getting 5-6K with just three systems ... before, two years ago, it took me 10 systems for a RAC like that ... |
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26)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19491)
Posted 19 Apr 2008 by Paul D. Buck
Post: Well, I am "gadding about" and playing with a bunch of projects ... I think that I will be EVENTUALLY settle down to Einstein, MilkyWay, Cosmology, an WCG as my mains; with the Mac Pro I think I can keep resonsable RAC and return with about 20 projects ... with shares of 100, 50, 25 and 12 ... with more projects at each lower level ... I think the 25 level will be more of the pure math projects and the lowest level mostly the odd corners ... For the moment I will be driving my numbers for a few project up before I "settle down" with a stock set of projects. If I were not just suffering from an acute attack of bills for the system I just bought ... well, I just saw a MB for a quad core ... :) |
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27)
Message boards :
Number crunching :
Very short Intel computation vs. normal AMD
(Message 19486)
Posted 18 Apr 2008 by Paul D. Buck
Post: Hello! Time to complete is ALWAYS an estimate. One of the problems with LHC is that many of the tasks end early which, if all the million turn tasks on you computer have ended early, this will bias the time calculator to short times. I know it looks odd, but it is normal. What is not normal, at least for LHC is for the progress to "freeze" ... as long as it is clicking up, and if you have a version that shows the graphics you can see the turn indicator ... and it is going up ... all is well in LHC-Land ... |
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28)
Message boards :
Number crunching :
Very short Intel computation vs. normal AMD
(Message 19478)
Posted 18 Apr 2008 by Paul D. Buck
Post: Though they are SUPPOSED to be the same, the math units of the Intel and AMD are different. Though it is better than what we had in the past, the standard that the FPUs are built to, well, is actually pretty "loose" ... So, two "identical", as far as the standard is concerned, FPU can return different results. In this case, it looks like you ran the balls around all day long and the other guys had the beam hit the wall in a very short time. Not sure how it will work out, but if the consensus is that the beam should have hit the wall, well, oops ... But, this is the point of running the simulations ... |
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29)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19477)
Posted 18 Apr 2008 by Paul D. Buck
Post: Well, all I have is a old dual core AMD 4400 , a dual Xeon with HT, and a single HT processor ... At least, that is all I have that can do LHC ... I have something else to do real work on ... :) |
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30)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19469)
Posted 18 Apr 2008 by Paul D. Buck
Post: I *KNOW* most people don't have a 2.38 TB main boot disk, or 16 G of memory on the off chance they will need it ... but compile for the Mac Pro and I got a machine for you ... :) Oh, and though they have only 500G drives in them now, I can put in a pair of 1 TB and bump this machine to 4 TB total ... though spread across 3 disks ... (the 2.38 is RAID 5 volume ... so I won't evn corrupt the data ...) :) Paul {edit}Thanks for the complement btw ... the last observation was that I was long-winded, non-specific and ranting ...{/edit} |
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31)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19464)
Posted 17 Apr 2008 by Paul D. Buck
Post: I would be willing to bet that if they did a port of their analysis program to BOINC we could do as well as the super computers they have lined up to do their data . Well, there are quite a few of us with both the bandwidth and larger than average computers ... Of course, it would have to run on a Mac Pro ... :) As for the rest, I think many of us share your frustrations and that is why the litany of questions. Though I have no issues with the forum/site code ... I WANT THE WORK ... :) Well, the good news is that there are other projects that are related now, so, I am drifting in that direction, somewhat sadly as this really was my favorite project ... I just could not get enough work fast enough to build up my numbers ... |
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32)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19455)
Posted 15 Apr 2008 by Paul D. Buck
Post: To Keck and Buck-- Um, I try not to make assumptions... and I am one of those that is always asking questions. Sadly, I rarely get answers... Anyway, that is why I have been answering as I have ... that this project, like SIMAP is one where work is not as plentiful as we would like. In the EARLY days, they even limited new accounts to keep the population low to improve our chances of getting work and to lower the loads on the servers. |
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33)
Message boards :
Number crunching :
project encountered internal error
(Message 19452)
Posted 15 Apr 2008 by Paul D. Buck
Post: It is an error on the server side ... not your system. We are kinda back to the problems they had last week ... :) |
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34)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19446)
Posted 15 Apr 2008 by Paul D. Buck
Post: Unbelievable I got 2 wu's! After 2 days of waiting. I thought Seti is the worst lousy project plagued with stoppages but LHC even outmatching and they do not give people official answer. Again, this is part of the "pattern" ... A bunch of work, then some "trickles" as they re-send some that need retesting ... I got three in flight now ... so, better than nothing ... BUt, I am also doing tons of work for other projects ... and having a little fun playing with the possibilities ... |
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35)
Message boards :
Number crunching :
Muon accelerator design via BOINC
(Message 19440)
Posted 14 Apr 2008 by Paul D. Buck
Post: Well, neither was CPDN at first ... But now, I have three models, two of them slabs and they are running and have 5 hours on their clocks ... so ... good to go! |
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36)
Message boards :
Number crunching :
Please note: this project rarely has work
(Message 19422)
Posted 14 Apr 2008 by Paul D. Buck
Post: I prefer US military standard: dd MMM yy 14 Apr 08 the military standard *I* learned was 2008-04-14 ... sorts in computer systems with no special coding too ... |
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37)
Message boards :
Number crunching :
Muon accelerator design via BOINC
(Message 19421)
Posted 14 Apr 2008 by Paul D. Buck
Post: According to their homepage, Windows WUs will be launched this week (about 2 weeks after Linux ones), with OSX to follow (no time period specified). So it might be worth keep an eye on this project. Well, I will ... I have been exlectic this weekend and have been doing several other projects for the heck of it and to see what is out there and what is happening ... Heck, it maybe that even CPDN got the "slab" models working on the Mac Pro (Intel) ... |
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38)
Message boards :
Number crunching :
shut down for maintenance ?
(Message 19420)
Posted 14 Apr 2008 by Paul D. Buck
Post: Well, we can HOPE that they cut some slack... Me I have about 10 stacked up to be reported ... Same thing at Milkyway@Home ... sigh ... though I have more stacked up on two machines there ... they ran out of room ... hopefully they will get it cleared up today and I can go back to town there ... I wonder if it is because it was BOINC Synergy's project of the month ... |
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39)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19419)
Posted 14 Apr 2008 by Paul D. Buck
Post: In the last 2 years for several times I tried to access the project to crunch a few wu's, but every time I see shut down notice. Is there any maintenance schedule around? The APPLICATION is stable ... THe work load is not ... :) Same with SIMAP ... and some other projects ... CPDN, EaH, RaH and WCG have been the most consistent in being UP and having work. SaH has work but has a history of having troubles in part because of load and they tend to be the first place to try new BOINC "features". I have been having surprisingly good luck with many of the newer "beta" class projects that in my signature you can see have less than 30K ... though I am working hard to "push" some of those up to the 50K area as fast as I can ... The only other project *I* cannot recommend is PPaH (YMMV) ... If I *HAD* to pick three, and only three projects I would go with CPDN, EaH and RaH as being the most reliable, having the nicest "environment" and the stablest workloads ... but that is just me ... You have to decide for yourself what you want to support ... |
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40)
Message boards :
Number crunching :
How often does LHC shut down?
(Message 19410)
Posted 14 Apr 2008 by Paul D. Buck
Post: It can be... sadly enough ... It was one of the odder ones in the beginning because they had 3 different size work units ... but any one of them could come to a halt in seconds ... when then beam hit the walls ... The screen saver sadly did not reflect anything that was really happening ... There was a little talk of moving another program to the BOINC platform ... but as far as I know that is dead ... I would be willing to bet that if they did a port of their analysis program to BOINC we could do as well as the super computers they have lined up to do their data ... One of the things that they did through most of the life of the program was to throttle the number of people that could do LHC, then with the intermittant work ... Well, if the work were constant like SaH or EaH they could have racked up numbers in that range because I know I was not the only one that would have made this my primary project... Just the thought of working with this aspect of physics ... alas, alack ... |
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