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Technical News :
Gorlin (Mar 25 2009)
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Author | Message |
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Matt Lebofsky Send message Joined: 1 Mar 99 Posts: 1444 Credit: 957,058 RAC: 0 |
Mmm-kay. So where are we at with the science database...? The morning today was much like yesterday: me, Eric, and Jeff shouting over the deafening noise of the server closet, taking turns hunched over a monitor attached directly to thumper (the kvm monitor was having separate issues). Lots of reboots and unexpected (and unpleasant) results. Lots of thinking we found the problem only to reboot and (five minutes later) finding we were wrong, then having to reboot again off of DVD (taking another five minutes). Basically our discussions were along the lines of: Why does the boot metadevice disappear when booting off of DVD? And why does the root metadevice disappear when coming up via grub? Didn't we resync these two drives yesterday? Oh look - the grub device map is referring to /dev/sdm, which was how the root drive was ennumerated when there were only 24 drives in the system - it should be referring to /dev/sdy now that we have 48 - so this must be at least one of our problems! Nope. Changing that did nothing. Etc. etc. etc. etc. Well, whatever. It's been a two-day-long game like a demented version Towers-of-Hanoi - swapping drives, installing/reinstalling grub, resyncing devices, reconfiguring mdadm, then going back to step one and trying a different permutation. On hindsight it probably would have been easier to just install a new OS from scratch (though we would have had to recreate a web of informix configuration which also exists on the root drives). Right now the system is actually up (finally) and resyncing one mirror (again) and will have to sync another once that's finished. So we're offline for another day, and we haven't even gotten to the pulse table problems yet. I will stil try to get Astropulse running in some form later on today/tonight. Funny thing: Oliver and Bernd of Einstein@home have been visiting from Germany, collaborating with Dave on some general BOINC stuff. They left just a couple hours ago, but we did discuss how when SETI@home is having issues such as this, Einstein@home certainly gets a huge "bump" from the suddenly influx of free CPU time. We joked how the these thumper issues strangely coincided with their arrival last week. Meanwhile, I'm back on radar blanking detail. We're now trying cross-correlations to match radar patterns using fftw. - Matt -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude |
TOM Send message Joined: 5 Apr 01 Posts: 53 Credit: 65,422,234 RAC: 86 |
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zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65738 Credit: 55,293,173 RAC: 49 |
Mmm-kay. So where are we at with the science database...? The morning today was much like yesterday: me, Eric, and Jeff shouting over the deafening noise of the server closet, taking turns hunched over a monitor attached directly to thumper (the kvm monitor was having separate issues). Lots of reboots and unexpected (and unpleasant) results. Lots of thinking we found the problem only to reboot and (five minutes later) finding we were wrong, then having to reboot again off of DVD (taking another five minutes). Are You sure they weren't Hunting for Hossenfeffer? The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Gundolf Jahn Send message Joined: 19 Sep 00 Posts: 3184 Credit: 446,358 RAC: 0 |
Are You sure they weren't Hunting for Hossenfeffer? Who or what is Hossenfeffer? Gruß, Gundolf [edit] Hasenpfeffer? [/edit] |
KWSN Ekky Ekky Ekky Send message Joined: 25 May 99 Posts: 944 Credit: 52,956,491 RAC: 67 |
Are You sure they weren't Hunting for Hossenfeffer? I suspect a reference to an old episode of Bugs Bunny "Bring me my Hossenfeffer!" says the King. Bugs is brought in on a lordly dish with a silver cover, "Mmm, what's up Doc?" etc. etc. |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65738 Credit: 55,293,173 RAC: 49 |
Are You sure they weren't Hunting for Hossenfeffer? Bingo as My Uncle would say, You win a cookie. Yeah, Rabbit Stew is what Google would find(the recipe, among others due to a misspelling). The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Nemesis Send message Joined: 14 Mar 07 Posts: 129 Credit: 31,295,655 RAC: 0 |
Are You sure they weren't Hunting for Hossenfeffer? Yup, one of my all time Bugs faves except for maybe "Hocus Pocus / Newport News" |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65738 Credit: 55,293,173 RAC: 49 |
Are You sure they weren't Hunting for Hossenfeffer? Of course this is the One I was thinking of: The Big Snooze which until recently I didn't realize is older than Me. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
kittyman Send message Joined: 9 Jul 00 Posts: 51468 Credit: 1,018,363,574 RAC: 1,004 |
Best of luck getting it all sorted Matt.....I know from my own little crunching farm experience how frustrating it can be when things just don't work for unexplainable reasons....and the complexity of your systems there are multitudes greater. Next time, keep those Einstein boyz outta the server closet, eh? I think they threw ya a mickey....LOL. And nice to see you have a little time left over for some science again. "Freedom is just Chaos, with better lighting." Alan Dean Foster |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65738 Credit: 55,293,173 RAC: 49 |
Yeah I agree those Einstein guys like black holes too much, So keep'em away from the servers. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Jord Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3 |
Funny thing: Oliver and Bernd of Einstein@home have been visiting from Germany, collaborating with Dave on some general BOINC stuff. They left just a couple hours ago, but we did discuss how when SETI@home is having issues such as this, Einstein@home certainly gets a huge "bump" from the suddenly influx of free CPU time. We joked how the these thumper issues strangely coincided with their arrival last week. It looks like they were jealous. All I am getting for Einstein is: "The server at einstein.phys.uwm.edu is taking too long to respond." and 27-Mar-09 19:17:47 Einstein@Home Scheduler request failed: HTTP file not found |
Gundolf Jahn Send message Joined: 19 Sep 00 Posts: 3184 Credit: 446,358 RAC: 0 |
Yeah, but the SETI Server status page too hangs since 13:20:10 UTC ;-) Gruß, Gundolf Computer sind nicht alles im Leben. (Kleiner Scherz) SETI@home classic workunits 3,758 SETI@home classic CPU time 66,520 hours |
Jord Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3 |
Einstein is having its own problems, all right: David Hammer wrote: We are having some filesystem problems. |
speedimic Send message Joined: 28 Sep 02 Posts: 362 Credit: 16,590,653 RAC: 0 |
Must be a space-science-epidemic; Cosmo, Milkyway, Einstein and Seti all beeing down or at least having serious problems... mic. |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65738 Credit: 55,293,173 RAC: 49 |
Must be a space-science-epidemic; Cosmo, Milkyway, Einstein and Seti all being down or at least having serious problems... What Folding doesn't have a problem? The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30639 Credit: 53,134,872 RAC: 32 |
Must be a space-science-epidemic; Cosmo, Milkyway, Einstein and Seti all beeing down or at least having serious problems... The little green men have counted and we have too many humans in orbit right now. As soon as the shuttle lands everything will go back to normal. ;) |
Jord Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3 |
News from Milkyway@Home: Travis Desell wrote: We're trying to get the 2nd project set up for the GPUs, and it looks like there was some misunderstanding or miscommunication with labstaff in doing it. Hopefully things should be back up shortly. |
MarkJ Send message Joined: 17 Feb 08 Posts: 1139 Credit: 80,854,192 RAC: 5 |
Funny thing: Oliver and Bernd of Einstein@home have been visiting from Germany, collaborating with Dave on some general BOINC stuff. They left just a couple hours ago, but we did discuss how when SETI@home is having issues such as this, Einstein@home certainly gets a huge "bump" from the suddenly influx of free CPU time. We joked how the these thumper issues strangely coincided with their arrival last week. It must be sympathy pains, apparently their file server has crashed too and is being rebuilt. Sounds a lot like Thumper. When you try and logon to their website it comes up with this message (after about 3 mins): Einstein@Home is down due to a fileserver crash. We are working to bring the project back online ASAP. UPDATE: Fri Mar 27 22:39:13 UTC 2009 The filesystem needs to be repaired so the project will likely be down for at least 12 more hours. Thank you for your patience. BOINC blog |
SATAN Send message Joined: 27 Aug 06 Posts: 835 Credit: 2,129,006 RAC: 0 |
Ageless, thanks for the update from Travis. |
Jord Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3 |
Since I seem to have all the news on the space themed projects, here's another one. ;-) Cosmology@Home news update. Scott Kruger wrote: Jord- |
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