1) Message boards : Theory Application : (Native) Theory - Sherpa looooooong runners (Message 40802)
Posted 5 Dec 2019 by [VENETO] boboviz
Post:
[quote]I want to finish this one
67% after 67hs


And, at the end, error after 3 days... :-(
2) Message boards : Theory Application : (Native) Theory - Sherpa looooooong runners (Message 40798)
Posted 5 Dec 2019 by [VENETO] boboviz
Post:
You may also have a look in the console with ALT-F1 for the job description and ALT-F2 for progress.


2.73295e+18 pb +- ( 6.02271e+17 pb = 22.0374 %) 62802000 ( 628025526 → 99.9% )
Integration time : (1d 16h 57m 52s elapsed / 827d 12h 52m 33s left ) [15:42:29]
Poincare::Poincare(): Inaccurate rotation {
a      = (-0.91078,-0.399788,0.101433)
b      = (0,0,1)
a'      = (0.317924,-0.918998,0.233165)→ rel.dev. (inf,-inf, -0.76635)
m_ct =0.101433

ecc, ecc


The "Poincare" part continues to repeat
827 days left....
3) Message boards : Theory Application : (Native) Theory - Sherpa looooooong runners (Message 40795)
Posted 5 Dec 2019 by [VENETO] boboviz
Post:
You have to use 'Show VM Console' to see what's going on.


Tasks: 110 total, 2 running, 71 sleeping, 0 stopped, 0 zombie
%CPU(s): 96.6 us, 2.8 sy, 0.0 ni, 0.0 id, 0.2 wa, 0.0 hi, 0.4 hi, 0.0 st
KiB Mem: 605712 total, 64660 free, 312404 used, 228648 buff/cache

5504 boinc   20   0   473896   39124   5736   R   99.2   6.5   2213:28  Sherpa
5504 boinc   20   0   473896   40692   7304   R   98.8   6.7   2213:43  Sherpa


Seems that is runnig well
4) Message boards : Theory Application : (Native) Theory - Sherpa looooooong runners (Message 40789)
Posted 5 Dec 2019 by [VENETO] boboviz
Post:
Should we automatically abort them? Easy to do it by bash script.
It's your decision.


I want to finish this one
67% after 67hs
5) Message boards : Number crunching : GPU advertised for LHC, but they don't do it? (Message 40271)
Posted 24 Oct 2019 by [VENETO] boboviz
Post:
We are still in the process of developing SixTrackLib, validating the physics and tackle the integration into the main SixTrack. Our time scale is still probably a year or two to expose the functionality into LHC@Home, but we already performing simulations using SixTrackLib in GPU for specific problems.


That's great!
If you need help to debug gpu app.... (i think you will use lhc-dev project) :-P
6) Message boards : Number crunching : GPU advertised for LHC, but they don't do it? (Message 40245)
Posted 22 Oct 2019 by [VENETO] boboviz
Post:
Then how come there are projects which only use ATI but not Nvidea?

Which project? All opencl app support both Amd and Nvidia gpu.
The only "problem" may be the different optimization of the code.
7) Message boards : Sixtrack Application : Can Sixtrack use a GPU for processing? (Message 40236)
Posted 22 Oct 2019 by [VENETO] boboviz
Post:
I can imagine that sixtrack would be the one that would make a GPU application. The challenge for the project team is finding the time to port the application, it has been asked for quite a few times.

3 years ago: sixtrack on gpu
1 year ago: sixtrack on gpu
Seems that sixtrack developers are not far away from gpu world
8) Message boards : Number crunching : GPU advertised for LHC, but they don't do it? (Message 40235)
Posted 22 Oct 2019 by [VENETO] boboviz
Post:
At first i want to speek from the computer market of GPU
The most selled GPU are NVIDIA GTX...

No, the most selled gpu are Intel integrated gpu.
Second: you can use Cuda only on Nvidia gpu, OpenCl can crunch on Nvidia, Amd, Intel, FPGA, ARM, Mali, etc
9) Message boards : ATLAS application : ATLAS vbox version 2.00 (Message 40233)
Posted 21 Oct 2019 by [VENETO] boboviz
Post:
Ok, i've installed the latest version of VirtualBox and the latest extensions.

And now seems to be ok

2019-10-21 17:05:28 (5416): Guest Log: HITS file was successfully produced
10) Message boards : ATLAS application : ATLAS vbox version 2.00 (Message 40168)
Posted 16 Oct 2019 by [VENETO] boboviz
Post:
I'm returning to sixtrack, waiting for more stable atlas app
11) Message boards : ATLAS application : ATLAS vbox version 2.00 (Message 40147)
Posted 13 Oct 2019 by [VENETO] boboviz
Post:
If you are interested in a better task monitoring those extensions must be installed.
See Yeti's checklist:
https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=4161&postid=29359


Ok, i've installed the latest version of VirtualBox and the latest extensions.
But this wu still use 0% of cpu.
The precedent wu used 50% of cpu
12) Message boards : ATLAS application : ATLAS vbox version 2.00 (Message 40146)
Posted 13 Oct 2019 by [VENETO] boboviz
Post:
The task finished and got credits - that's BOINC's point of view.
But you may be aware that from the scientific point of view the task didn't succeed:
2019-10-12 05:27:54 (12056): Guest Log: No HITS file was produced


Nooo, i partecipate for science not for credits...

Your logfile shows that the task started/paused several times and couldn't successfully write it's snapshot

I crunch with my notebook, so i turn off it sometimes.
But why not snapshot if we use virtualbox??
13) Message boards : ATLAS application : ATLAS vbox version 2.00 (Message 40132)
Posted 12 Oct 2019 by [VENETO] boboviz
Post:
Wu arrived quickly to 99%, then slowed down and now, after 22hs is at 100%, but still crunching.


Finished!! (after 34hs)
14) Message boards : ATLAS application : ATLAS vbox version 2.00 (Message 40120)
Posted 11 Oct 2019 by [VENETO] boboviz
Post:
Do you have an idea when they might finish?
So far they reached 100% in 1-2hrs but the FLOPS estimate must be way wrong since they are still going after a day or so.


Same here.
Wu arrived quickly to 99%, then slowed down and now, after 22hs is at 100%, but still crunching.
Is it normal?
15) Message boards : News : The SixTrack team welcomes the LHC@Home volunteers at the CERN open days (Message 39964)
Posted 18 Sep 2019 by [VENETO] boboviz
Post:
First of all the German Rechenkraft.net team would like to thank Ben Segal, Ian McIntosh, David Cameron and all the others involved for organizing both the ATLAS@home and the LHC@home booths which our team visited with 13 people on Saturday, 14th.

This time i'm the only one from Boinc Italy team. Maybe next time our teams could organize a joint venture :-)

Of course, due to so many people, waiting times to enter the underground sites were ridiculously long: If I remember correctly, on the first day we waited almost 4 hours after entry at 9 am to only see the ATLAS detector for around 20 minutes. And this was located nearby, directly at the main entrance (resulting in people rushing there first, of course).

With my sons i decided to go on "baby parts" of Meyrin site (and they had a great time). After this, Atlas was closed for 2hours for "security problems" (too much people).
At the end, i cannot go on underground.

A nice thing for the future would be a yellow VIP wristband for volunteer computing participants which should allow us to directly proceed to the underground sites - omitting the waiting queues of course... ;-)

+1
:-)
16) Message boards : News : The SixTrack team welcomes the LHC@Home volunteers at the CERN open days (Message 39941)
Posted 16 Sep 2019 by [VENETO] boboviz
Post:
You needed a smart phone to have any chance. I am complaining to organisers, why was there NO MAP!


And no open wifi for guests.
Switzerland are out of phone roaming from other EU countries, so a wifi are welcome!!

P.S.
It was a pleasure to meet you
17) Message boards : News : The SixTrack team welcomes the LHC@Home volunteers at the CERN open days (Message 39934)
Posted 15 Sep 2019 by [VENETO] boboviz
Post:
Some considerations after OpenCern
- first all, THANKS to all volunteers for their kindness and competence. They help me, my wife and my two sons to better understand LHC, physics and science. Thank you
- second, too much people to underground experiment. May be, the next time, use a prenotation service
- third, cause of some problems, i coult not partecipate to meeting with LHC@Home guys. But, at the end of the day, waiting bus 18 with a LOT of people, i saw a known face...with a t-shirt of lhc@home (i have a t-shirt of Boinc Italy)...and a badge "Eric McIntosh"!!! 10 minutes of very interesting talk about project. What a person, what a energy (despite his condition)!!

P.S.
Please, change all external venetian blinds. Are horrible.
18) Message boards : News : CERN Open Days in 2 weeks! (Message 39764)
Posted 30 Aug 2019 by [VENETO] boboviz
Post:
During the CERN Open Days 2019, we will have a small LHC@home stand as part of the IT activities in building 504 near the Data Centre.


I planned my visit weeks ago (to point 1 - Atlas and Meyrin) with my family.
Happy to see you, if i can.

P.s.
Mobile app to visit Cern is great!!
19) Message boards : Number crunching : What Can You do with SiMD : Simple answers and potential questions : Science Projects post (Message 39741)
Posted 28 Aug 2019 by [VENETO] boboviz
Post:
LHC Admins seems not interested in gpgpu...
20) Message boards : News : BOINC Pentathlon - Sixtrack sprint (Message 38902)
Posted 19 May 2019 by [VENETO] boboviz
Post:
I have some wus pending validation since 9 days....

... and your computers are set to "hidden" so nobody will be able to look into it.


Changed.


Next 20


©2020 CERN