1) Message boards : LHC@home Science : screensaver/graphics bug (Message 23301)
Posted 1 Oct 2011 by Profile Alex
Post:
As an oldtimer, I have a snapshot of the old screensaver on my profile.


The old screensaver had particles in motion with a progress bar and a moving logo to prevent screen burn in.
I liked the various colour themes.
2) Message boards : Cafe LHC : Google Tech Talk: Data Processing at the LHC (Message 22679)
Posted 18 Feb 2011 by Profile Alex
Post:
Thought I\'d share this link with the LHC number crunchers.

http://www.youtube.com/watch?v=sfyHdFo5GWE

(currently watching it now, so no summary)
3) Message boards : LHC@home Science : It\'s good to see news articles about experimental physics nowadays. (Message 22392)
Posted 19 Jun 2010 by Profile Alex
Post:
For the sake of truth, these data to support the assumption of multiple Higgs came from the Tevatron. LHC will deliver data from the LHCB experiment but I dont know if they have already formulated some results.
Greetings from Germany
Dr.mabuse


I\'m just excited because physics is going to be about the Science, experimentation and discovery... not just the math which tries to extrapolate based on what we already know.
4) Message boards : LHC@home Science : It\'s good to see news articles about experimental physics nowadays. (Message 22389)
Posted 15 Jun 2010 by Profile Alex
Post:
First neutrino\'s were confirmed to have mass (from looking at data)
... and now this.
http://news.bbc.co.uk/2/hi/science_and_environment/10313875.stm
Seeing news articles use phrases like \'They say the data point to five Higgs bosons with similar masses but different electric charges.\' instead of referring to more mathematical theories is quite exciting.

Yes.. DATA.. not just theories. It\'s exciting times for physics.
5) Message boards : Number crunching : We will NOT be crunching the results of the LHC collisions (Message 22166)
Posted 31 Mar 2010 by Profile Alex
Post:
The fact that they were able to turn the machine up to 7TeV today, and recover from a lost beam quickly tells me that all the crunching we did over the last couple of years have been a success.
They were able to aim the beams accurately, and that\'s what all our number crunching was about.

http://www.engadget.com/2010/03/30/large-hadron-collider-to-attempt-7-tev-proton-collisions-via-liv/

I\'m glad to see that this computing has been a success.
6) Message boards : LHC@home Science : 7 TeV collisions set for Mar 30th. (Message 22109)
Posted 24 Mar 2010 by Profile Alex
Post:
On March 30\'th they\'ll ramp the LHC up to 7TeV collisions.
http://www.youtube.com/watch?v=wHuHyK2S7-k&feature=sub

This basically sets the world on edge for the following April Fool\'s day 2 days later.

7) Message boards : Number crunching : 20.08.2009 10:45 GMT (Message 21723)
Posted 7 Dec 2009 by Profile Alex
Post:
Is it intentional that most of the news iem on the home page have 20.08.2009 10:45 GMT as their datetime stamp?

It\'s a Euro thing. day, month year
8) Message boards : Cafe LHC : The Benefit of Discovering the Higg's Boson (Message 21722)
Posted 7 Dec 2009 by Profile Alex
Post:
Looking forward to my flying car.
9) Message boards : LHC@home Science : Images of today's collisions (Message 21721)
Posted 7 Dec 2009 by Profile Alex
Post:
Nice pics Sid!
10) Message boards : Number crunching : Why is Core "0" hotter on a 64bit system? (Message 21706)
Posted 3 Dec 2009 by Profile Alex
Post:
Just installed q9650 cpu, but notice while using even a q6600 cpu that in both cases core \"0\" is about 6c hotter than other cores while using Win 7 64bit. Does anybody know why that happens? On a 32bit system Quad CPU\'s seem to be more equal.



I\'d guess that the first processor is running the kernel, which then splits tasks to the other processors.

11) Message boards : Number crunching : WUs returning zero credit despite successful completion (Message 21273)
Posted 27 Feb 2009 by Profile Alex
Post:
I think you\'re seeing other people have issues with the \'disk space\' issue. There\'s been a couple of answers in the diskspace thread.
12) Message boards : Cafe LHC : PBS Show - The Atom Smashers. (Message 21130)
Posted 28 Jan 2009 by Profile Alex
Post:
Recently made documentary about Fermilab.
http://www.pbs.org/independentlens/atomsmashers/

This film also mentions the competition between Fermilab and the LHC in the race to find the Higgs boson.
13) Message boards : LHC@home Science : A quick post to solve the Worlds energy problems (Message 20983)
Posted 16 Jan 2009 by Profile Alex
Post:
How about using the LHC to make two black holes, then you have them spin about each other. You then place the two black holes next to a water tank, and then the gravity waves from the black holes generate waves in the water tank, then you just harvest wave energy from the moving water.


14) Message boards : LHC@home Science : Great TV program on LHC on the Science Channel HD (Message 20848)
Posted 5 Dec 2008 by Profile Alex
Post:
Don\'t forget to check out the CERNTV channel on youtube.
15) Message boards : LHC@home Science : New Tasks? Yes or No !! (Message 20759)
Posted 12 Nov 2008 by Profile Alex
Post:
11/10/2008 4:22:48 PM|lhcathome|Sending scheduler request: Requested by user. Requesting 8931 seconds of work, reporting 0 completed tasks
11/10/2008 4:22:49 PM|World Community Grid|Finished upload of faah4540_001355_MC_xMut_md02950_07_2_2
11/10/2008 4:22:58 PM|lhcathome|Scheduler request succeeded: got 0 new tasks


I\\\'m new. All it says is \\\"communication deferred.\\\" I\\\'ve tried all sorts of updates, etc. Einstein and seti work fine. What\\\'s up?



The boinc client slows down its requests to the server when there is no work.
In the early days of Boinc being used on the Seti@home servers clients that would normally contact the server once every 8 hours for a work unit would suddenly start hammering the Seti server repeately for hours on end which caused the network switches to be overloaded with traffic.
Having the \'deferred\' requests avoids hammering the server when there are no work units available.
The LHC project has had very few work units for the last few months, mostly because all the magnets are aligned, and their contols are tuned, so there really isn\'t much to simulate these days unless they want to try out a change to the operation of the collider.

16) Message boards : Cafe LHC : Ask a ninja discusses the physics of \'Speed of Dark\' (Message 20731)
Posted 31 Oct 2008 by Profile Alex
Post:
\"Light takes thousands of years to travel from a star. Know what\'s already there before the light arrives? The dark\"

http://ca.youtube.com/watch?v=ndKt5ZuyeKU

Note who asked the ninja that question? Not me, I\'m not that Alex.
17) Message boards : Number crunching : Can't reach LCH@home (Message 20645)
Posted 11 Oct 2008 by Profile Alex
Post:
I have machines at two locations. At one I have no problem getting to LHC@home. The other can\'t reach it. I reach as far as dewberry-ebrc.core-net.qmul.ac.uk [138.37.3.204] as hop 19. I see my other machine gets there as hop 16. Don\'t know why one stops there and the other gets through.

Gary



Well, it works from Canada. connecting thru sprintlink, telia, and \'ja\'.

7]
20 194 ms 191 ms 191 ms dewberry-ebr3.core-net.qmul.ac.uk [138.37.3.204]

21 195 ms 191 ms 191 ms hepboinc.ph.qmul.ac.uk [138.37.50.115]

Trace complete.

C:\\Users\\a>When you run that tracert command, does the first line verify that IP that you\'re connecting to? If not, then perhaps the second computer\'s DNS is different.
Does your tracert have a maximum number of hops equal to where it stops?

\"Tracing route to hepboinc.ph.qmul.ac.uk [138.37.50.115]
over a maximum of 30 hops:\"
Myself, I use openDNS.

You could also make sure that your IP configuration doesn\'t have a TTL value set to 20.
http://secfr.nerim.net/docs/fingerprint/en/ttl_default.html


18) Message boards : Number crunching : WLCG Worldwide LHC Computing Grid gets flipped on (Message 20628)
Posted 6 Oct 2008 by Profile Alex
Post:
http://www.engadget.com/2008/10/06/worlds-largest-computing-grid-lives-to-go-live/

The worldwide grid that looks at the collider data gets turned on.

\"The Grid combines the IT power of over 140 computer centers, 100,000 processors and the collaborative efforts of 33 countries\"
19) Message boards : LHC@home Science : Black hole question (Message 20613)
Posted 5 Oct 2008 by Profile Alex
Post:
Step 1. Put a black hole in a lab.

Step 2. Do some tests.

Step 3. See if results match expected. If not, then you\'ve discovered something new or at least discovered that your assumption may have been incorrect.


20) Message boards : LHC@home Science : LHC @ Home on Playstation 3 (Message 20564)
Posted 29 Sep 2008 by Profile Alex
Post:
PS3 porting is quite not easy...
It was discussed some time ago in this thread


Also discussed in Nov 2004.
http://lhcathome.cern.ch/lhcathome/forum_thread.php?id=1057#5362

The 16 trillion floating point operations per second is still impressive even with today\'s multi core pc\'s.

I never did get around to getting one and putting linux on it.



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