1) Message boards : Sixtrack Application : Inconclusive, valid/invalid results (Message 30995)
Posted 24 Jun 2017 by Desti
Post:
I've here some WU with this, where I've many hours crunching time, but the opponent trashed the WU after a few seconds. Interesting, that all the quick endings were running Intel i5 processors. Might they have triggered a processor bug?

https://lhcathome.cern.ch/lhcathome/workunit.php?wuid=70976515
https://lhcathome.cern.ch/lhcathome/workunit.php?wuid=70999827
https://lhcathome.cern.ch/lhcathome/workunit.php?wuid=71368170
2) Message boards : Sixtrack Application : i686 instead of x86_64: why? (Message 30994)
Posted 23 Jun 2017 by Desti
Post:
Thanks Harri. I believe our strength is in numbers. Why throw away if you
can still do something useful. "Many a mickle maks a muckle" :-) Eric.
(I will be running tests soon to re-compare 32-bit/64-bit performance.)



If you don't optimise for 64 bit and the modern extensions they have, because you want to have the backward compatibility for deprecated hardware, you will waste much more pool performance, than what you would lose by kicking the old systems out.
3) Message boards : Sixtrack Application : i686 instead of x86_64: why? (Message 30828)
Posted 18 Jun 2017 by Desti
Post:
Well I must admit we just use 32-bit even on 64-bit systems. This is just to try
and keep the number of executables and the amount of testing to a minimum.
I suppose we also save a very little memory. Remember my priorities are
Reliability, Functionality and Performance in that order, even if I get it wrong
sometimes ! :-)
We are coming shortly with AVX, SSE2, and generic versions for all platforms
(but 64-bit for Macs). I'll rerun timing tests after this big task is complete.
Clearly SSE2/AVX are big performance improvements. More news whenever. Eric.



Isn't it about time to just drop 32 bit support? 32 bit only processors are more then 10 years old and their number and performance must be close to irrelevant in the total crunching pool.
4) Message boards : Number crunching : not sending out SixTrack (Message 30431)
Posted 20 May 2017 by Desti
Post:
Got flooded the last days with lot of sixtrack work, but now it's stalled again. I've noticed a lot of WU with runtime of only a few seconds, which then results into requesting lot of new WU in short period, maybe that't the reason for the blockage?
5) Message boards : Number crunching : How is the SSE3 thing coming along? (Message 24380)
Posted 16 Jul 2012 by Desti
Post:
All my new workunits are valid so far, on AMD linux.

http://lhcathomeclassic.cern.ch/sixtrack/results.php?userid=7562
6) Message boards : Number crunching : Linux vs. Windows app (Message 24308)
Posted 12 Jul 2012 by Desti
Post:
I just attached my AMD E350 with Ubuntu 12.04 and it downloaded the sse3 binary too.



The system completed the sse3 WU valid and at competitive speed.

http://lhcathomeclassic.cern.ch/sixtrack/workunit.php?wuid=1858396
7) Message boards : Number crunching : Linux vs. Windows app (Message 24262)
Posted 11 Jul 2012 by Desti
Post:
I just attached my AMD E350 with Ubuntu 12.04 and it downloaded the sse3 binary too.
8) Message boards : Number crunching : Linux vs. Windows app (Message 24104)
Posted 6 Jul 2012 by Desti
Post:
I also didn't get the sse3 version yet, even BOINC is detecting all cpu flags correct. Have you configured the server right, the flag is called PNI and not SSE3 on linux.

http://lhcathomeclassic.cern.ch/sixtrack/workunit.php?wuid=1813515
9) Message boards : News : Server/Executable problems (Message 24089)
Posted 6 Jul 2012 by Desti
Post:
Congratulations to the LHC team!
10) Message boards : LHC@home Science : Colder than space (Message 19860)
Posted 3 Aug 2008 by Desti
Post:
There are some great pictures from LHC

http://www.boston.com/bigpicture/2008/08/the_large_hadron_collider.html
11) Message boards : LHC@home Science : Cern/LHC bei abenteuer wissen (Message 19702)
Posted 5 Jun 2008 by Desti
Post:
The serie abenteuer wissen (produced by the Second German Television/ZDF) had made a report of Cern/LHC.

http://abenteuerwissen.zdf.de/ZDFde/inhalt/20/0,1872,7246964,00.html

You can also watch the report in the ZDF mediathek

http://www.zdf.de/ZDFmediathek/content/Das_groesste_Experiment_der_Welt_CERN/Sendungen_Alle,232/511382
12) Message boards : Number crunching : Initial Replication (Message 18212)
Posted 16 Oct 2007 by Desti
Post:
With BOINC 5.10 it should be possible to abort the already send workunits when three canocial results are back!?
13) Message boards : Number crunching : 64-bit Linux (Message 17005)
Posted 7 Jun 2007 by Desti
Post:
I hope they will upgrade to the lastest BOINC server version in the near future, which handles 64bit/32bit compatibility automaticly.
14) Message boards : Number crunching : Welcome QMUL Admins (Message 16110)
Posted 11 Jan 2007 by Desti
Post:
Hello!
15) Questions and Answers : Unix/Linux : I can't run LHC on Ubuntu Linux (Message 15770)
Posted 7 Dec 2006 by Desti
Post:
You could simply add some more projects like seti@home or Einstein@home to give your PC permanent work.
16) Message boards : Number crunching : I feel bad ... (Message 15658)
Posted 25 Nov 2006 by Desti
Post:
LHC has no MacOS application. :-/
17) Message boards : LHC@home Science : Das Universum in der Röhre (Message 15614)
Posted 21 Nov 2006 by Desti
Post:
The german magazine Technologie Review has a small article about the LHC:
http://www.heise.de/tr/artikel/print/81225
18) Message boards : Number crunching : When you see work is around ... (Message 15182)
Posted 25 Oct 2006 by Desti
Post:
What servers does LHC@home use?
Other projects have MUCH more users and they have no problems with their database connections, even when they are out of work (like SIMAP).
19) Message boards : Number crunching : New server: report broken links etc here (Message 15172)
Posted 24 Oct 2006 by Desti
Post:
The new server has some serious database problems, it's always overloaded.
20) Message boards : Number crunching : Garfield is coming.... (Message 14902)
Posted 29 Sep 2006 by Desti
Post:
Anyone knows what Garfield is intended for?


http://garfield.web.cern.ch/garfield/


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