1) Message boards : Cafe LHC : Stopping contributing until Corona passes (Message 41950)
Posted 18 Mar 2020 by Profile Joseph Stateson
Post:
I have shut down my "rigs" and am running only the two systems needed for my office to function.

Also going to get a list together of why might want my rigs in case they never come back on.
2) Message boards : ATLAS application : not getting any windows tasks (Message 41898)
Posted 12 Mar 2020 by Profile Joseph Stateson
Post:
Thanks. I unchecked "Run native ~" and got tasks.


dfitto, but had to change venue as native was needed for a Linux system

This needs to be on a sticky thread along withj VBox 6.x being ok to use

alternately change the webpage instruction from

Run native if available


to

Don't run anything except native code
3) Message boards : ATLAS application : not getting any windows tasks (Message 41890)
Posted 12 Mar 2020 by Profile Joseph Stateson
Post:
I have native atlas working fine on Linux. Pair of 8cpu each, total of 16 valid results so far

On two windows systems, both with VT-X enabled cannot get any data

VirtualBox version: 6.0.18 no atlas available system has 20 possible threads, win10. One "CMS" simulation valid , 16 CMS failed.

VirtualBox version: 6.1.4 no atlas work available system has 24 threads, win8.1
4) Questions and Answers : Unix/Linux : have 100s of messages: virtual box not instlaled (Message 41866)
Posted 10 Mar 2020 by Profile Joseph Stateson
Post:
Am running LHC Theory have 263 valid results "native theory"
https://lhcathome.cern.ch/lhcathome/results.php?hostid=10634369

why am I getting 100s of virtual box not installed messages?

using venue school, have all checked except Atlas
5) Message boards : CMS Application : Boinc getting exit status wrong: thinks some tasks end ok: only 1 was good (Message 41825)
Posted 5 Mar 2020 by Profile Joseph Stateson
Post:
Except for 1 CMS tasks, all finished with computation error as shown here

Unaccountably, boinc (using the BoincTask's history file) thinks five CMS tasks finished ok rather than just one. Possibly BM or maybe BT is not recognizing the exit code or state reported by the Boinc client. The image below shows, in red, the failing tasks with the green ones supposedly correct. The only actually good task was CMS_2758607_1583327645_654309_0 which had and exit code of "0" and state of 31.
Note that it ran for 14 hours, about right while others were far less, some only 20 minutes.
The codes and states are part of the boinc client and not the same same (I am guesing) as reported by the app and shown on the project web site.

Is the source code available where I can track down the exit code to see what the client expects? An exit code of 65536 is actually "0" if the client expects a short integer. Same for 13565952. However, some of the 13565952 are marked as bad which is correct so the problem is not just the wrong return type.
Name of LHC app  (all CMS)      State  Exit code    	Hex
CMS_2758607_1583327645_654309_0	31	       0	     0
CMS_3283891_1583379179_229515_0	31	   65536	 10000
CMS_3429646_1583393596_983118_0	 3	13565552	FC0000
CMS_3544230_1583405013_479488_0	 3	13565552	FC0000
CMS_3556244_1583406215_299149_0	 3	13565552	FC0000
CMS_3540875_1583404712_894231_0 31	13565552	FC0000
CMS_3578506_1583408318_580860_0  3	13565552	FC0000
CMS_3556238_1583406215_252558_0 31	13565552	FC0000
CMS_3597441_1583410122_414318_0  3	13565552	FC0000
CMS_3565130_1583407116_164734_0 31	13565552	FC0000
CMS_3623454_1583412526_246354_0  3	13565552	FC0000
CMS_3620757_1583412225_441454_0  3	13565552	FC0000
CMS_3658161_1583416134_728359_0  3	13565552	FC0000
CMS_3676965_1583417951_770383_0  3	13565552	FC0000
CMS_3689514_1583419158_910138_0  3	13565552	FC0000
CMS_3692705_1583419459_290792_0  3	13565552 	FC0000
CMS 3687301 1583418858_348740 0 31	13565552	FC0000




raw data is here
https://stateson.net/images/all_lhc_cms.txt
6) Message boards : LHC@home Science : Getting harder to explain why there is more matter than antimatter in our universe (Message 41815)
Posted 4 Mar 2020 by Profile Joseph Stateson
Post:
A recent measurement of the neutron magnetic dipole strength showed that it was far smaller than theory predicted.

https://wattsupwiththat.com/2020/03/01/why-is-there-any-matter-in-the-universe-at-all-new-sussex-study-sheds-light

Some theories that predict more matter than antimatter, "the baryon asymmetry problem" require a magnetic dipole for the neutron. Those theories seem to have been "disproved".

The writeup mentions that more theories (about EDM) in physics have been disproven than proven and that by itself points to a new direction ie: new physics is required to solve this problem. Unlike "global warming", where less snow proves global warming and so does more snow, theories explaining how things work can be disproven.

List of unsolved problems in physice

Side thought: Was reading a post in this sub-forum about antimatter and gravity, several experiments at CERN on gravity were mentioned. I got to wondering if the beam of antimatter could be run clockwise and then counter-clockwise and a possible beam "tilt" observed. The existence of a tilt would indicated a repulsive force just like the motion of an electron in a magnetic field.
7) Message boards : ATLAS application : Using 8 CPUs even if not showing 8 used? (Message 41811)
Posted 3 Mar 2020 by Profile Joseph Stateson
Post:

It is highly recommended that you mount only those repositories that are required to run the selected LHC@home apps.
Repositories that are not used will just block resources on your side as well as server side.

Hence you should change your /etc/cvmfs/default.local as follows:
CVMFS_REPOSITORIES="atlas,atlas-condb,grid,cernvm-prod,sft,alice"


Done.
CVMFS_REPOSITORIES=atlas,atlas-condb,grid,cernvm-prod,sft,alice
CVMFS_QUOTA_LIMIT=4096
CVMFS_CACHE_BASE=/scratch/cvmfs
CVMFS_HTTP_PROXY=DIRECT
CVMFS_SEND_INFO_HEADER=yes

It appears that
CVMFS_REPOSITORIES=atlas.cern.ch,atlas-condb.cern.ch,grid.cern.ch,alice.cern.ch

also works on another of my Linux boxes, but not sure about the quotes you show in your post.

I restarted boinc and it appears the three Atlas tasks picked up where they left off as if they were "left in memory". I did not have "leave_apps_in_mermory" enabled as discussed here. Has checkpointing been implemented for natural code Atlas? There was less than 2 minutes difference in elapsed time after restarting boinc.

8) Message boards : ATLAS application : Using 8 CPUs even if not showing 8 used? (Message 41807)
Posted 3 Mar 2020 by Profile Joseph Stateson
Post:
Have 12c/24t dual xeon running
Pair of Atlas (8 + 8)
One theory (1)
Pair of Einstein (2)
Five WCG (5)
The above add up to 24 threads but BOINC shows only one of the Atlas having 8 CPUs.
Bug in BOINC?
Atlas really running on 1 CPU?
Four images attached. Three of them are snapshots of the Boinc Manager to show that it agrees with the Boinctasks image.
https://stateson.net/images/lhc_results2.png
https://stateson.net/images/lhc_results1.png
https://stateson.net/images/lhc_results3.png


My understanding of the LINUX mpstat command is that the "nice" column shows %utilization. I cannot tell if all CPUs are at %100, maybe yes, may no? Note that if you count up "running" tasks there are NOT 24 unless you assume the first atlas really has 8. In any event BOINC thinks it has allocated all the CPUs because there are some WCG ready to run but no CPUs for them.

root@jysdualxeon:/home/jstateson# mpstat -P ALL
Linux 5.3.0-40-generic (jysdualxeon)    03/02/2020      _x86_64_        (24 CPU)

06:08:32 PM  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
06:08:32 PM  all    0.25   69.93    0.61    0.44    0.00    0.30    0.00    0.00    0.00   28.46
06:08:32 PM    0    0.43   45.43    0.94    0.76    0.00    4.39    0.00    0.00    0.00   48.05
06:08:32 PM    1    0.32   67.71    0.68    0.32    0.00    1.00    0.00    0.00    0.00   29.96
06:08:32 PM    2    0.31   70.00    0.65    0.47    0.00    0.49    0.00    0.00    0.00   28.07
06:08:32 PM    3    0.25   74.97    0.62    0.39    0.00    0.29    0.00    0.00    0.00   23.49
06:08:32 PM    4    0.26   77.36    0.56    0.38    0.00    0.20    0.00    0.00    0.00   21.23
06:08:32 PM    5    0.33   76.79    0.66    0.46    0.00    0.34    0.00    0.00    0.00   21.43
06:08:32 PM    6    0.13   81.06    0.50    0.35    0.00    0.08    0.00    0.00    0.00   17.87
06:08:32 PM    7    0.13   81.54    0.52    0.39    0.00    0.05    0.00    0.00    0.00   17.36
06:08:32 PM    8    0.14   81.23    0.50    0.23    0.00    0.05    0.00    0.00    0.00   17.86
06:08:32 PM    9    0.14   82.12    0.50    0.24    0.00    0.03    0.00    0.00    0.00   16.96
06:08:32 PM   10    0.12   82.72    0.49    0.25    0.00    0.03    0.00    0.00    0.00   16.38
06:08:32 PM   11    0.12   82.30    0.47    0.31    0.00    0.02    0.00    0.00    0.00   16.76
06:08:32 PM   12    0.32   72.93    0.64    0.44    0.00    0.04    0.00    0.00    0.00   25.62
06:08:32 PM   13    0.33   63.40    0.65    0.49    0.00    0.02    0.00    0.00    0.00   35.11
06:08:32 PM   14    0.35   61.90    0.66    0.41    0.00    0.01    0.00    0.00    0.00   36.67
06:08:32 PM   15    0.35   57.75    0.74    0.58    0.00    0.01    0.00    0.00    0.00   40.57
06:08:32 PM   16    0.38   55.00    0.74    0.71    0.00    0.01    0.00    0.00    0.00   43.16
06:08:32 PM   17    0.38   53.64    0.80    0.67    0.00    0.00    0.00    0.00    0.00   44.50
06:08:32 PM   18    0.23   69.44    0.60    0.39    0.00    0.00    0.00    0.00    0.00   29.34
06:08:32 PM   19    0.17   69.91    0.54    0.40    0.00    0.00    0.00    0.00    0.00   28.97
06:08:32 PM   20    0.19   69.23    0.53    0.71    0.00    0.00    0.00    0.00    0.00   29.34
06:08:32 PM   21    0.24   65.25    0.58    0.47    0.00    0.03    0.00    0.00    0.00   33.44
06:08:32 PM   22    0.20   67.21    0.58    0.32    0.00    0.00    0.00    0.00    0.00   31.69
06:08:32 PM   23    0.18   70.29    0.58    0.41    0.00    0.00    0.00    0.00    0.00   28.54

9) Message boards : Number crunching : LHC is NOT using CPU threads above 28 (Message 39087)
Posted 9 Jun 2019 by Profile Joseph Stateson
Post:
Have been running 3 Atlas of 4 cpu each and noticed that one of them frequently has less CPU usage than the other two (see below)

There are 20 threads (10 cores) and 32gb ram. Task Resources show all 20 threads being used but average 75%. The boinc client allocates 3*4 + 3 = 15 so there are 5 thread left over which agrees with my %75 allowance for boinc.

Something seems wrong. Typically CPU tasks are %95 or higher.

Going to limit jobs to 2 and see if cpu usage increases. If only %71 usage then 1 out of 4 are not being used IMHO.

Anyone else see this usage? I assume bonictasks is calculating usage correctly.

10) Message boards : Number crunching : Performance tools for LHC (Message 39080)
Posted 8 Jun 2019 by Profile Joseph Stateson
Post:
I put together some tools for comparing various apps (sse, avx, etc) There is a complete writeup of the programs over at the BoincTasks forum. The source are all on GitHub and can be build using VS2017.
https://forum.efmer.com/index.php?board=47.0

The results of two of these tools are shown below
The program HostProjecStats can be used to examine project data. For example, here is the performance for one of the board leader "Vortac"
[


The following two images are a demo of the BTHistoryReader . This works only with BoincTasks history files unlike hostprogramstats.

The first image compares various applications. The second images compares systems using the selected application. Comparisons are of elapsed time for 6-track apps

SCATTERING: APPLICATIONS




SCATTERING: SYSTEMS
11) Message boards : Number crunching : How many cores does a vbox64 LHC use? (Message 34218)
Posted 1 Feb 2018 by Profile Joseph Stateson
Post:
CMS needs 2048mb RAM each, Theory 630mb and ATLAS 3420mb for single cores.

I've seen that situation when not enough RAM was seen by BOINC.

Check to see how much RAM you are allotting to BOINC while in use. Also, make sure you have set BOINC to use all cores. I sometimes set it to 50% while watching vids or gaming and forget to go back to 100% later.

Your LHC should be using 4.7GB with those 3 running.
You can check their properties and see how much working set they want to claim.


You are exactly correct. I did not have enough memory. I actually had a message stating "suspended, waiting for memory" but was unable to read it as there was not enough space for that entry on the display. When I expanded the box I saw the warning about memory. I had set memory usage to %90 when I set this system up as it had only 6gb and my other systems have at least 12.

I cannot adjust cores as suggested by Toby as I am not the owner of the project. Grcpool is the owner. However, I will be able to return to BAM! in a few weeks as I will have a coin balance large enough to not have to use their pool.
12) Message boards : Number crunching : How many cores does a vbox64 LHC use? (Message 34197)
Posted 1 Feb 2018 by Profile Joseph Stateson
Post:
I show not quite %50 utilization of my XEON cpu that has 4 cores and 8 threads. There are 2 Collatz running on a pair of ATI graphics boards and 3 LHC@home that are vbox64 also running. That leave 3 threads unused. There are 16 waiting LHC tasks. Something is wrong. Three of those tasks should have been scheduled to run. Under usage there is no indication of how many cores are required. Does the vbox require a thread? if so, that would account for the missing 3 tasks that should be running.



As show above, there should be at least 8 running process, not 5.
13) Message boards : Number crunching : micro black holes found (Message 21982)
Posted 6 Mar 2010 by Profile Joseph Stateson
Post:
Just want to point out that I am getting 0.01, 0.02 and a couple of 0.03 credits. Obviously, the LHC credit horizon is so small that most of the energy my dual opterons micro-processors pump into this LHC hole cannot make it back out.
14) Message boards : Number crunching : Thank you for the work (Message 21034)
Posted 20 Jan 2009 by Profile Joseph Stateson
Post:
Yea - not only did I get my CUDA
xmass gift, but I got a WU from
this project. Only thing missing
is a SixPack to go with the SixTrack!


What card did you get?

I have been running a 9800GT and a GTX280 ... the latter is more fun ... I am sore tempted to order a GTX295 for grins and giggles ... but have been resisting the temptation for the moment ... of course I could succumb at any minute ... :)


Hi Paul!

I recently bought a gtx280. We have several of the 260 where I work as our division has been looking at useing this technology and I thought I might do something on my own. I recall the 2xx are not limited to single precision floats.
15) Message boards : Number crunching : Thank you for the work (Message 20986)
Posted 16 Jan 2009 by Profile Joseph Stateson
Post:
Yea - not only did I get my CUDA
xmass gift, but I got a WU from
this project. Only thing missing
is a SixPack to go with the SixTrack!



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