LHC@home

Hi all,

With a lot of help from forum members here, I got my LHC project working again, and it's been running fine for a while now.

The only oddity is that I'm only getting CMS tasks, even though the Server Status page shows thousands of taks for both the Theory and Atlas Simulations, in fact way more tasks than CMS has. Does anyone have any idea why? It's not a big deal, but I'm curious, and would like to run some of the other tasks if I can.

I have all of the applications set to "yes" except "Atlas (long simulation)", which I believe is only for Linux.

Thanks.

Doug

what about the native-pref?
This must be disabled. Atlas-Longrunner are out of use ftm.

maeax,

Thanks for the info. My native pref was enabled, and I have now disabled (unchecked) it.

I'm restarting BOINC and I'll see if I start getting any other type of LHC tasks. It may take a couple of days to know for sure.

Thanks again.

Doug

Hmmmmm...

I set all my other projects to NOT get new tasks. After a number of hours, I now have only 1 task running, an LHC CMS task. Even if I update, and with 1000s of Atlas and Theory tasks available to send, I'm not getting anythingl From my log file:

| LHC@home | [css] running CMS_766468_1647601597.189125_0 ( )
| LHC@home | Sending scheduler request: To fetch work.
| LHC@home | Requesting new tasks for CPU
| LHC@home | Scheduler request completed: got 0 new tasks
| LHC@home | No tasks sent
| LHC@home | No tasks are available for SixTrack
| LHC@home | No tasks are available for sixtracktest
| LHC@home | No tasks are available for CMS Simulation
| LHC@home | No tasks are available for Theory Simulation
| LHC@home | No tasks are available for ATLAS Simulation
| LHC@home | This computer has reached a limit on tasks in progress
| LHC@home | Project requested delay of 6 seconds

First, it's false that no tasks are available for those other applications. Second, what does the bolded line mean (This computer has reached...)? How is that determined? I've set my "Store at least" and "store up to an additional" settings for LHC to multiple days each, and the same for my BOINC local prefs. I've then tried multiple updates of my LHC project. Nada.

Any ideas why I can't get more tasks, and/or tasks from other applications?

Thanks.

Doug

Well, one issue is apparently resolved. I just got an Atlas Simulation job a while ago.

I'm still only getting 1 LHC task at a time though, and I still don't understand what the "has reached a limit on tasks" log message is about.

Doug

Only sixtrack is running without complications.
Theory, CMS and Atlas need more experience, because they are VM-Projects.
You can read Yeti's checklist or other messages in the folder of Theory, CMS or Atlas.

I'm still only getting 1 LHC task at a time though, and I still don't understand what the "has reached a limit on tasks" log message is about.

What have you in your preferences set for Max # jobs and Max # CPUs?
There is a very old bug when you have set max number of CPUs to 1.
You will only get 1 task. Try to set this to e.g. 4 and # of jobs (tasks) to a number you like e.g. 8.

My "Max # Jobs" is set to 1.
My "Max # CPUs" is set to "No limit".

This isn't exactly the situation you described. Should I try changing this?

Thanks.

Doug

My "Max # Jobs" is set to 1.
My "Max # CPUs" is set to "No limit".

This isn't exactly the situation you described. Should I try changing this?

Max Jobs 1 is causing your "This computer has reached a limit on tasks in progress" Set this higher.e.g. 4

"No limit" for CPUs could take all cpu's when you get an 'ATLAS'-task. Not ideal for your i5-3470, I suppose. Your machine could become sluggish when it's running a 4-core ATLAS-VM.