1) Message boards : Number crunching : 197 (0xc5) EXIT_TIME_LIMIT_EXCEEDED (Message 26498)
Posted 19 May 2014 by Profile Sid
Post:
Understood; I hope I have fixed it; we shall see.
I'll figure out some compensation! A T-shirt?
(but I can't do that for everybody) Eric.


Awarding the credit would do. . . .

2) Message boards : Number crunching : 197 (0xc5) EXIT_TIME_LIMIT_EXCEEDED (Message 26494)
Posted 19 May 2014 by Profile Sid
Post:
I got a couple of WU's with this error:

http://lhcathomeclassic.cern.ch/sixtrack/result.php?resultid=36571379
http://lhcathomeclassic.cern.ch/sixtrack/result.php?resultid=36568253




I have you beat: 15 wu's fail after running roughly 7 hours. Apparently all victims of the SSE3 optimisation issue running on 2 i7's.

. . . needless to say, I'm not a happy camper.
3) Message boards : Number crunching : 499 wu?? (Message 21868)
Posted 25 Feb 2010 by Profile Sid
Post:
After mounth there are 499 wu in progress!!
What\\\\\\\\\\\\\\\'s? In progress?? New work for lhc@home???





The Server Status now shows 4,177 results in progress.

. . . looks like the rumors of the demise of LHC@Home were premature.
4) Message boards : Cafe LHC : Number of concurrent connections? (Message 21837)
Posted 9 Feb 2010 by Profile Sid
Post:
I\\\'m not totally sure, but i think the concurrent connections number includes connections to the data-driven web pages so it may just be us lurkers skulking around the forums.



Now, it shows only 4 concurrent connections. . . .


5) Message boards : Cafe LHC : Whatever happened to LHC@home....apologies and thanks. (Message 21812)
Posted 29 Jan 2010 by Profile Sid
Post:
Where are the LHC tasks? Been waiting for about a year. Continually update, but nothing available?


CERN will be restarting the LHC around 20Feb.

. . . hopefully they will port some work for the BOINCers sometimes in 2010.

6) Message boards : LHC@home Science : Black hole question (Message 21798)
Posted 20 Jan 2010 by Profile Sid
Post:
Okay black holes and high electric bills, sounds symetrical but thats not \"SUZY\" and why aren\'t we hearing from CERN scientist like \"bigmac\"?



Nagilum:


I doubt that the CERN scientists have learned anything new since the LHC is in test and tune mode.

. . . from everything I can gather, the LHC will be back online around 20Feb, and will gradually ramp up to it\'s design energy levels.

Who knows what new understanding of particle physics might be coming in 2010!
7) Message boards : Cafe LHC : Number of concurrent connections? (Message 21797)
Posted 20 Jan 2010 by Profile Sid
Post:

On server status the number of concurrent connections has been varying between 6 and 9.

. . . signs of life?
8) Message boards : Cafe LHC : Crunch WCG until LHC@Home gets running. . . . (Message 21779)
Posted 23 Dec 2009 by Profile Sid
Post:



25 Things You Might Not Know About IBM


IBM, also known as Big Blue, is as big and distributed as any company in the IT industry. In fact, you could say IBM is the New York City of technology companies. Huge. Diverse. Proud to call itself No. 1, though not everyone may agree.

And just as the Big Apple often sets trends for the rest of the country, Big Blue has a history of calling plays for the tech market.

These days, IBM is heavily promoting its Smarter Planet initiative to add a layer of intelligence to the basic processes that run today’s world, including roads, water and power. It’s just the latest milestone for the 98-year-old company. Here is a list of things you just might not know about IBM.


More . . .
9) Message boards : LHC@home Science : The LHC produces first physics results (Message 21778)
Posted 23 Dec 2009 by Profile Sid
Post:

A total of 284 collisions were recorded by the ALICE experiment and immediately reconstructed and analyzed. The researchers determined the average number of charged particles emitted perpendicular to the beam direction, known as ‘pseudorapidity density’. Their aim was to compare their results with previous measurements of proton-antiproton collisions at the same energy, and to establish a reference for comparison with future measurements at higher LHC energies.

The paper by the ALICE collaboration, which brings together authors from 113 research institutes, describes the experimental conditions in detail, as well as the main features of the ALICE detector systems used for the analysis.

Alice Collaboration (2009). First proton-proton collisions at the LHC as observed with the ALICE detector: measurement of the charged particle pseudorapidity density at Ös = 900 GeV. European Physical Journal C, DOI:10.1140/epjc/s10052-009-1227-4

A Large Ion Collider Experiment. For more information on the ALICE experiment, see: http://aliceinfo.cern.ch/Collaboration/index.html


More. . .
10) Message boards : Team invites : BOINCstats (Message 21777)
Posted 23 Dec 2009 by Profile Sid
Post:


We are currently seeking new members who would like to participate in an active, friendly, and knowledgeable BOINC community. Come see for yourself why we are one of the fastest rising teams on BOINC.


We just keep growing and growing!


Number of members 963

Number of active members 389

Team joiners, average per day 1.12

Team leavers, average per day 0.37

Team members, average growth per day 0.75




Consider joining us!

11) Message boards : Number crunching : new work now that LHC online? (Message 21775)
Posted 21 Dec 2009 by Profile Sid
Post:
now that the LHC is back online, can we expect work units again?



The LHC will be offline until February [20?] I really don\'t expect any work around here until late spring at the earliest.

. . . or course, that is subject to change without notice.


12) Message boards : Number crunching : WLCG Worldwide LHC Computing Grid gets flipped on (Message 21773)
Posted 20 Dec 2009 by Profile Sid
Post:
1:06:23 - 2 years ago

A tour of the GRID project at CERN, the worlds largest distributed computing for scientific purposes, to analyse results from the worlds largest physics experiment.

CERN LHC ATLAS GRID
13) Message boards : LHC@home Science : Stanford Accelerator Expertise at Work in the LHC (Message 21771)
Posted 17 Dec 2009 by Profile Sid
Post:

The LHC might be on winter break, but accelerator physicists in the US are hard at work on upgrades for its magnets: http://ow.ly/N004
14) Message boards : Cafe LHC : The CERN LHC Portal (Message 21764)
Posted 14 Dec 2009 by Profile Sid
Post:
. . . another interesting fan site, this time from a Spanish physics teacher:

Taking a closer look at LHC
15) Message boards : Team invites : BOINCstats (Message 21763)
Posted 14 Dec 2009 by Profile Sid
Post:

We are currently seeking new members who would like to participate in an active, friendly, and knowledgeable BOINC community. Come see for yourself why we are one of the fastest rising teams on BOINC.



16) Message boards : Cafe LHC : New work (Message 21762)
Posted 14 Dec 2009 by Profile Sid
Post:
... for the vaguest of timeframes for new work units...
The vaguest of timeframes can be found in the \\\"Whatever happened\\\" thread. The suggestion is that there will be no more work units. Look for bigmac posts.



From everything I can gather, the LHC will be shut down later this week and then be offline until February.

Once CERN gets it running to it\'s full potential, there will be work to crunch that will tax the computing capacity of the civilized world.

. . . it is only then that I look for work to be ported here for the BOINC\'ers.
17) Message boards : Number crunching : Are We There Yet? (Message 21752)
Posted 12 Dec 2009 by Profile Sid
Post:

As long as this website remains up, I will hold out hope that there will be new workunits for BOINC\'ers to crunch.

The keyword is patience.
18) Message boards : Cafe LHC : The CERN LHC Portal (Message 21751)
Posted 12 Dec 2009 by Profile Sid
Post:
An interesting fan site:

The CERN LHC Portal
19) Message boards : LHC@home Science : The LHC: What price the secrets of the universe? (Message 21744)
Posted 11 Dec 2009 by Profile Sid
Post:
What might the LHC discover?


Top of the list is the origin of mass in the universe. We strongly suspect that the particles that make up our bodies don’t just have mass—that is to say substance—but acquire it by some very subtle mechanism. The most well-established theory is the Higgs mechanism, which predicts the existence of one or more particles known as Higgs bosons that should be well within the reach of the LHC.

We also hope to discover the nature of dark matter, which many theorists suspect consists of a new kind of subatomic particle that outnumbers the stuff that makes up the Earth, sun and all the stars in the sky by a ratio of 5:1.

More speculatively, we could discover extra dimensions in the universe, revealing, in a Copernican revolution of unprecedented proportion, that we’re crawling around on a four-dimensional sheet in a perhaps infinitely larger multi-dimensional cosmos like ants on a piece of paper.

And last, but hardly least, we could discover something so strange and, possibly, so useful that nobody has yet thought of it.



More . . .
20) Message boards : LHC@home Science : Stanford Accelerator Expertise at Work in the LHC (Message 21740)
Posted 10 Dec 2009 by Profile Sid
Post:
CERN\'s Large Hadron Collider became the world\'s highest energy particle collider when it began colliding protons at 1.18 tera-electron volts late last month. This was no small feat; it takes hundreds of mechanical and software systems to run such a machine—including a system governing the radio frequency waves that give particles their boost inside the accelerator. With their combined 25 years of experience on just such a system, a SLAC team of researchers helped CERN solve an unanticipated complexity with this LHC system, helping get the giant machine up and running.

\\\"Our team is the place where technology and accelerator physics come together,\" said SLAC accelerator physicist John Fox. \"We know particle beams and their dynamics, we have technical expertise with accelerator RF systems and feedback, and we’ve learned a lot understanding their interaction.\\\" Under Fox\'s leadership, SLAC researchers Dan Van Winkle, Themis Mastoridis and Claudio Rivetta used their knowledge of RF systems to design new software tools needed to commission and optimize the LHC RF system.

As in other accelerators, it\'s very important to keep both the LHC\'s beam and RF systems stable. The RF system governs the radio waves that push particles to ever higher energies, much as ocean waves help a surfer gain speed. But if an RF system is unstable or poorly optimized to the particle beam, it can inadvertently change the beam\'s shape or trajectory. These systems are very complex and require constant observation and adjustment—even more so at the LHC than at most other accelerators. Particles enter the LHC at a relatively low energy and then ramp up to the target collision energy. Substantial RF adjustments are needed throughout this ramp-up process.


More . . .


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