Info | Message |
---|---|
1) Message boards : CMS Application : No Tasks
Message 5479 Posted 11 Aug 2018 by Ben Segal |
So, is the CMS-project now completly dead?(dev and production) No, the CMS people are still trying to get their production job submission working. Don't know how hard it is or how hard they are working - vacation time... |
2) Message boards : Number crunching : New Applications
Message 5470 Posted 18 Jul 2018 by Ben Segal |
These test apps are for now just placeholders for a summer student project which is looking at some problems involving Machine Learning. Will post if/when we have some real work to crunch. For now please don't waste time wondering, OK? Ben and Laurence |
3) Message boards : CMS Application : Dip?
Message 4315 Posted 14 Nov 2016 by Ben Segal |
BOINC's feeder is not running: https://lhcathome.cern.ch/vLHCathome-dev/server_status.php Thanks for the heads up! It's been restarted. Ben and Nils |
4) Message boards : Theory Application : Authentication errors - error 206.
Message 4249 Posted 28 Oct 2016 by Ben Segal |
Yes, we had a firewall issue with the Condor job feeder. Now being fixed so things should recover slowly. |
5) Message boards : News : CMS Servers up again
Message 4238 Posted 26 Oct 2016 by Ben Segal |
My hosts got a couple of WUs from the non-dev project although it was clear they would run into an error. Well actually you do get the security patches whatever .vdi version gets loaded. CernVM is connected to its file system CVMFS and it is this which does automagical kernel and library updates right after booting the vdi image. |
6) Message boards : CMS Application : New Version v47.60
Message 4237 Posted 26 Oct 2016 by Ben Segal |
Do you mean vLHC is hosted by an "external" laboratory ? I would have thought this was "inside" LHC infrastructure, somehow... The vLHC BOINC servers are at CERN but the Condor servers which supply jobs can be elsewhere. In this case, CMS jobs are being sent from RAL where Ivan is partly based. |
7) Message boards : News : CMS Servers up again
Message 4232 Posted 25 Oct 2016 by Ben Segal |
My hosts got a couple of WUs from the non-dev project although it was clear they would run into an error. The patch for this bug was issued yesterday and will be applied automagically when your current task expires and your CernVM reboots. |
8) Message boards : CMS Application : New Version v47.60
Message 4188 Posted 17 Oct 2016 by Ben Segal |
This new version enables Web proxy auto discovery (wpad) which means the CVMFS traffic should be directed to either CERN for FNAL depending on where you are. By the way, FNAL means Fermi National Accelerator Lab which is near Chicago USA. |
9) Message boards : Theory Application : Multicore settings for 20 cor machine
Message 3892 Posted 30 Jul 2016 by Ben Segal |
At least without app_config and no tasks, an empty cache and asking 0 days of work, I got 8 tasks for my 8 threaded (4 core HT) machine. Yes, looks like Work In Progress (:-)) |
10) Message boards : Theory Application : Multicore settings for 20 cor machine
Message 3890 Posted 30 Jul 2016 by Ben Segal |
- the new project preference options set to 1 task max, 3 CPUs max Aaaargh!!! Looks like Laurence is doing development under our feet. Those preferences were set by me yesterday, before today's testing. The page with them displayed was still on my screen but I'd not refreshed it today. Now, as you say, they aren't shown any more. But hopefully they are still active somewhere.. Laurence, what goes ??? |
11) Message boards : Number crunching : Performance Tuning
Message 3887 Posted 30 Jul 2016 by Ben Segal |
Is there ANY way, i could run 3 jobs with 4 cores? I am currently doing this on my i7 Macbook Pro (4CPUs and 8 threads), just setting the new project preference options to 1 task max and 3 CPUs max. Try it! See my post http://lhcathomedev.cern.ch/vLHCathome-dev/forum_thread.php?id=280&postid=3885#3885 |
12) Message boards : Theory Application : Multicore settings for 20 cor machine
Message 3885 Posted 30 Jul 2016 by Ben Segal |
Just FYI, with my MacBook Pro (i7, 4 CPUs, 8 threads) and: - no app_config.xml file - the new project preference options set to 1 task max, 3 CPUs max - only the Theory app checked and with the latest updated server code, I get (YES!): 1 task (Theory) and a 3 CPU VM and it works correctly so far… I will check for progress today, including some suspends/resumes. Ben EDIT: So far all goes well: 4 jobs run to completion, all 3 Condor job threads active. Suspend for now (15:50 CET) |
13) Message boards : Number crunching : Respect My Limits!
Message 3865 Posted 29 Jul 2016 by Ben Segal |
Hi Bryan, it's only very recently that Theory has been able to use multiple cores sensibly and we are slowly gaining experience with that. The code itself is not multi-threaded to any serious extent so one is forced to use either multiple BOINC tasks with a VM in each (ugly), or multiple VMs per task, or multiple jobs per VM (which may be tricky) or a mixture of all that. If the code were designed for multicore and/or multiple threads life would be simpler (like Atlas I believe). In any case going over about 8 threads at a time is application dependent and in general high energy physics code doesn't lend itself to that sort of thing. In the old days we tried and failed to use vector hardware on super computers like the Cray and so on. Sorry not to be able to ace out your super installation! Ben |
14) Message boards : Theory Application : Task startup issue
Message 3850 Posted 29 Jul 2016 by Ben Segal |
Thanks, Rom. Anyway be careful as Laurence hasn't yet fully implemented the new project preferences for number of cores and tasks… You may not get what you ask for until he's finished coding it. |
15) Message boards : Theory Application : Task startup issue
Message 3829 Posted 27 Jul 2016 by Ben Segal |
I have a case, where i am running a 4 core tasks. For whatever reason, it decided after 3h or so, to discontinue 3 of them and runs only on one. I had the same thing yesterday with a 2 core task when one of the two job streams went quiet while the other continued to run jobs. |
16) Message boards : Theory Application : Theory Application job errors
Message 3779 Posted 22 Jul 2016 by Ben Segal |
The Theory Application looks like it is getting a batch of bad input jobs from the MCPlots server. This is causing many task errors. We are investigating… Please be patient. |
17) Message boards : Theory Application : New Version v47.22
Message 3773 Posted 22 Jul 2016 by Ben Segal |
Since about 5.44UTC there seem to be no jobs available. Yes, there was a problem over the last few hours with both job supply and result processing on the Theory Applicationt. This has now been fixed so things should clear up steadily. @CP, this also explains your lack of jobs after resuming... |
18) Message boards : Theory Application : Task shutting down prematurly
Message 3604 Posted 23 Jun 2016 by Ben Segal |
As before, now task a running , maybe 1 job and starting a new task. Hi Rasputin, Laurence is busy for about 10 days so may not reply to you for a while… Thanks for helping us test this! |
19) Message boards : News : Scheduler and vbox update to detect 64-bit enabled computers
Message 3603 Posted 23 Jun 2016 by Ben Segal |
Hi maeax, Laurence is off for about 10 days so may not reply to you for a while… Thanks for helping us test this! |
20) Message boards : Number crunching : VBox issues
Message 3548 Posted 8 Jun 2016 by Ben Segal |
Rom just released vboxwrapper 26186 at the weekend to support VirtualBox 5.1 on Windows. The Theory app was updated so that the release on Monday would go with that version but the CMS app wasn't updated. It has been done now so please try again. Yes it does. |
©2025 CERN