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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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 Posted: Tue Jan 18, 2005 6:32 am Post subject: Re-start schedule |
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| Quote: | January 14, 2005
Dear Users:
In our last Status Report: http://lhcathome.cern.ch/announcement2.html
we said:
"Please accept our holiday and New Year's greetings - and see you in 2005!"
Now the holidays are over, we can tell you what we have achieved during the shutdown and what we plan over the next 2-3 weeks.
First, our new high-tech server hardware will be installed next week and the BOINC system will be configured and tested on it over the following week.
Second, a lot of work has been devoted to the Sixtrack application code to eliminate the small numerical differences that could occur in some problems when run on a wide variety of hardware and operating systems. This has been solved by Eric McIntosh and Frank Schmidt, using a new state-of-the-art floating point function library developed by Florent de Dinechin and his team at Ecole Normale Superieure in Lyon. A bug fix has also been made to the checkpoint-restart code which could possibly have been the cause of occasional Sixtrack execution errors.
Third, a large number of accelerator tracking studies now need to be run, to confirm and extend the series begun in 2004 with LHC@Home.
So new work will begin to appear on the site in the last week of this month, and major production runs will be restarted in early February.
Thanks again to our crunchers for their patience and interest!
Ben Segal - LHC@Home Coordinator
http://lhcathome.cern.ch/announcement3.html
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Wed Jan 26, 2005 10:21 pm Post subject: |
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| Quote: | 1/26/05
We will be addressing two issues this week. First, we will be introducing a new application over the weekend. This should reduce download times by introducing static data files that will not be downloaded with each work unit.
Second, we are going to require core client version 4.16 or greater. This will address failed downloads, repeated downloads, MD5 errors, and bandwidth issues. We will also be setting the deadline back to 7 days. To make the change over to the new version of MFold easier we are slowing the flow of work units down. We hope to be back at full throttle on Monday afternoon.
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As stated in another thread, version 4.19 is available for download from the Predictor site.
http://predictor.scripps.edu/download.php |
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Sat Feb 05, 2005 5:35 pm Post subject: |
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Info from the LHC bulletin board on Feb. 3, 2005.
| Quote: | Thanks for your patience.
Some reasons for our underestimate of the time to come up:
1. The new server installation has been quite tough as the BOINC server software has had several changes since we ran last year. Now we've incorporated them all. This included even changes in the database formats! We are now testing the new server inhouse.
2. The changes to Sixtrack for perfecting its floating point accuracy have been a major effort. The work on the Linux client, incorporating this, is in final testing. The Windows version is not quite finished and we are bashing away on it at this moment.
As we don't want to come up with unfinished business on hand, we'd rather delay a few more days and get it right, OK? But it's very soon now.
Ben Segal
LHC@home |
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Fri Feb 11, 2005 5:06 pm Post subject: |
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| Quote: | Feb. 11, 2005
We got the clients finally running and we are now alpha-testing them. We should be able to release them next week. Sorry for the delay. |
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Killerrabbit
Major Oblivion
Joined: 23 May 2002
Posts: 4656
Location: in a rabbit hole near you!!
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| Posted: Sat Feb 12, 2005 12:47 am Post subject: |
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So it should be up in another month at their rate of progress.
Ni
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Dagger
Prince
Joined: 10 Mar 2004
Posts: 2918
Location: BC Canada
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| Posted: Mon Feb 14, 2005 11:49 am Post subject: |
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| Ben Segal wrote: | Right - it really is a virtue!
The alpha testing went very well over the weekend. The new server is stable and working well.
We have one known client bug and that is a strange hang that can occur with Windows graphics running. We are working on it, but want to fix that before going to beta level (i.e. opening up the new server on the normal URL).
Soooooo, a little more patience, please...
Ben Segal / LHC@home |
http://lhcathome.cern.ch/forum_thread.php?id=1128#5771
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When in doubt, kick it until it works. |
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Sat Feb 19, 2005 9:37 pm Post subject: |
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| Quote: | Feb. 18, 2005
Testing is almost finished. There are a few minor problems, but we think we can release the clients and change to the new server next Monday.
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Hmmmmm, maybe it's about time to re-attach?
Last edited by LanDroid on Sun Feb 20, 2005 6:56 pm; edited 1 time in total |
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Michelle
Moistened Bint
Joined: 28 Oct 2004
Posts: 10232
Location: At my desk
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| Posted: Sun Feb 20, 2005 5:13 am Post subject: |
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Hooray!  Maybe.
Hope you re-attach without any dramas, LanDroid. I was going to detach but decided not to just in case there were any problems with re-attaching.
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My brain hurts.
Jammy's Brain Donor.
[img]http://www.katrinashome.com/KWSN_Michelle_counter.php[/img] |
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Dagger
Prince
Joined: 10 Mar 2004
Posts: 2918
Location: BC Canada
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| Posted: Mon Feb 21, 2005 3:13 pm Post subject: |
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Welp, she's up and running, required a detach reattach to get things working again. It's also a little slow right now as the server is being flodded with requests.
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When in doubt, kick it until it works. |
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Michelle
Moistened Bint
Joined: 28 Oct 2004
Posts: 10232
Location: At my desk
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| Posted: Mon Feb 21, 2005 6:25 pm Post subject: |
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Downloading lots of little bits and pieces from LHC at this very moment.
Woo Hoo!!
Blast! Kept getting failed downloads, so had to detach/reattach. Seems to be fine now.
_________________
My brain hurts.
Jammy's Brain Donor.
[img]http://www.katrinashome.com/KWSN_Michelle_counter.php[/img] |
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Cohiba
Prince
Joined: 13 Jul 2004
Posts: 1721
Location: A tabbaco plantation
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| Posted: Tue Feb 22, 2005 8:48 am Post subject: |
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Just detached and re-attached 15 boincers have 6 more that were not running at the time to add to LHC.
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Smoke-em if you got-em I do.. |
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Fri Mar 04, 2005 3:51 pm Post subject: |
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| Quote: | March 4, 2005
We are very concerned and apologize to users for the 'Zero CPU' problem. We suspect a problem with our use of the Boinc API (which has changed recently) but we are short of effort to fix it quickly. We considered halting the project but as the results are in fact very valuable we would like to continue, with the support of those users who can accept possible credit errors. Thank you all again for your crunching for LHC!
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Welllll, since they say the results are "very valuable", I will re-attach. Anything to smash those REVOLTING sub-atomic particles TO PIECES! I HATE them and they are dang near EVERYWHERE!
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Fart in your gen direxion
I am the goatse.cx guy
Joined: 24 May 2002
Posts: 2022
Location: Regrettably for you, I'm Upwind in Upstate N.Y.
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| Posted: Fri Mar 04, 2005 3:57 pm Post subject: |
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| LanDroid wrote: |
Welllll, since they say the results are "very valuable", I will re-attach. Anything to smash those REVOLTING sub-atomic particles TO PIECES! I HATE them and they are dang near EVERYWHERE! |
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ToeBee
KWSN Castellan
Joined: 30 Jun 2004
Posts: 601
Location: Manhattan, KS
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| Posted: Sat Mar 05, 2005 6:10 am Post subject: |
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Bad timing, LanDroid - they are now out of work  There will probably be some more in a couple of days.
Supposedly the 0 credit problem is only affecting 10% of results on average. I can certainly live with that for now. But whatever floats your gravy boat!  |
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sir spuddly buddly
Prince
Joined: 27 Nov 2004
Posts: 1048
Location: here, I think.
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| Posted: Sat Mar 05, 2005 7:55 am Post subject: |
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Ni!
Is this the same 0 credit problem as E@H have been having? 
_________________
a monster can be excused for his behaviour . . . The problem is not how a monster could do it, but how a human being did it.
Scaring 11 year olds since 2005
"There is only one path to Ni!-dom - through the shubbery"
Click every day at http://naturarvet.se/en/ to save a forest! |
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Cohiba
Prince
Joined: 13 Jul 2004
Posts: 1721
Location: A tabbaco plantation
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| Posted: Mon May 16, 2005 9:07 am Post subject: |
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| sir spuddly buddly wrote: | Ni!
Is this the same 0 credit problem as E@H have been having? |
No it wasn't sir spud but hopefully since march you've figured that out.. And also they seem to be short on units again, were doing good and got there credit problems fixed now they can't seem to supply enough units again.
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Smoke-em if you got-em I do.. |
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Thu Jun 02, 2005 10:51 am Post subject: |
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| I just snagged a few work units even though their web site says they're out of work, check it out... The units say "Sixtrack 4.67", don't recall if that's a new version. |
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ToeBee
KWSN Castellan
Joined: 30 Jun 2004
Posts: 601
Location: Manhattan, KS
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| Posted: Thu Jun 02, 2005 7:08 pm Post subject: |
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| Yep. 2 of my computers snagged a bunch of work units some time today. I suspect they are testing some last minute changes before they release the promised 30,000 work units with a million turns in them. |
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LanDroid
Prince
Joined: 11 Jun 2002
Posts: 4466
Location: Cincinnati, OH U.S.
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| Posted: Sat Jun 25, 2005 10:15 am Post subject: Data Torrent |
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Another indication of the huge amount of data the LHC will generate.
| Quote: | UK scientists at CCLRC's Rutherford Appleton Laboratory (RAL) in Oxfordshire recently joined computing centres around the world in a networking challenge that saw RAL transfer 60 million megabytes of data over a ten-day period. ...
The exercise was designed to test the global computing infrastructure for the Large Hadron Collider (LHC), the world's biggest particle physics experiment currently being built at CERN in Switzerland. To get ready for the LHC's unprecedented data rates, the worldwide collaboration is carrying out a series of "Service Challenges", the most recent of which (Service Challenge 2) has just been successfully completed. The eight labs involved sustained an average continuous data flow of 600 megabytes per second (MB/s) for 10 days from CERN. The total amount of data transmitted during this challenge (500 million megabytes) would take about 250 years to download using a typical 512 kilobit per second household broadband connection.
"This service challenge is a key step on the way to managing the torrents of data anticipated from the LHC," said Jamie Shiers, manager of the service challenges at CERN. "When the LHC starts operating in 2007, it will be the most data-intensive physics instrument on the planet, producing more than 1500 megabytes of data every second for over a decade." |
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ToeBee
KWSN Castellan
Joined: 30 Jun 2004
Posts: 601
Location: Manhattan, KS
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| Posted: Sat Jun 25, 2005 12:10 pm Post subject: |
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mmm... I gotta splice myself into that network somewhere!  |
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