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Problem with N-Body Simulation 1.48 never finishing

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Bill

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Message 63265 - Posted: 25 Mar 2015, 17:37:37 UTC

In my case the N-Body Simulation 1.48 is running 12 CPUs. It gets to 100% after a couple of hours and then continues to run (over 200 hours so far) but never finishes. It does this on 2 separate machines.
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Profile mikey
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Message 63271 - Posted: 26 Mar 2015, 11:28:08 UTC - in response to Message 63265.  

In my case the N-Body Simulation 1.48 is running 12 CPUs. It gets to 100% after a couple of hours and then continues to run (over 200 hours so far) but never finishes. It does this on 2 separate machines.


Some people do have problems with the n-body units and it sounds like yours are stuck, try suspending the project for a few seconds and then restarting it and see what they do. If they restart but at a lower percentage they could finish, but you may end up aborting them anyway. One thing if you have another cpu project when you suspend MW you may get a ton of units from the other project, so you may want to say no new tasks from it first.
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Xray Quadrant

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Message 63320 - Posted: 6 Apr 2015, 15:30:12 UTC

How do I stop my computer from downloading the N-body Simulation 1.48? I have set my preferences to NO on N-body (all categories) but I keep getting these files and they do not want to finish, they just keep running with a Remaining Time of ---. The only ways that I have found to stop the processing of these files is to either re-boot or abort it.
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swiftmallard
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Message 63321 - Posted: 6 Apr 2015, 16:38:19 UTC - in response to Message 63320.  

How do I stop my computer from downloading the N-body Simulation 1.48? I have set my preferences to NO on N-body (all categories) but I keep getting these files and they do not want to finish, they just keep running with a Remaining Time of ---. The only ways that I have found to stop the processing of these files is to either re-boot or abort it.

Make certain this box is not checked in your preferences:
If no work for selected applications is available, accept work from other applications?
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Xray Quadrant

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Message 63322 - Posted: 6 Apr 2015, 17:24:36 UTC

How do I stop my computer from downloading the N-body Simulation 1.48? I have set my preferences to NO on N-body (all categories) but I keep getting these files and they do not want to finish, they just keep running with a Remaining Time of ---. The only ways that I have found to stop the processing of these files is to either re-boot or abort it.

Make certain this box is not checked in your preferences:
If no work for selected applications is available, accept work from other applications?

Thanks, it was checked.
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iancantwell

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Message 63326 - Posted: 7 Apr 2015, 11:00:26 UTC

I had to abort ps_nbody_2_13_orphan_sim_2_1422013803_1287612_2, when it ran 2.5 hours on 2 CPU without check-pointing and remaining time zero for most of that time. No problem with the others
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eXtreme Warhead

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Message 63337 - Posted: 8 Apr 2015, 20:41:06 UTC - in response to Message 63326.  

those n-body crap is absolutely buggy. even if it says it will use 4 cpus, or better cores, it often uses only a single one, but blocks the other three cores which those app so-called uses for other applications

i kicked those crap out of the calculations, it's absolutely useless. even the points are rediculous for the work
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Profile usao
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Message 63420 - Posted: 20 Apr 2015, 19:52:55 UTC - in response to Message 63337.  

Im having the same trouble, all the N-Body simulations just go slowly to 100% and then sit there with the cpu doing nothing for hours on end.
I went to the website and changed the preferences to not run the N-Body simulations (unchecked), but im still getting them in the work queue.
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swiftmallard
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Message 63421 - Posted: 20 Apr 2015, 20:05:53 UTC - in response to Message 63420.  

...
I went to the website and changed the preferences to not run the N-Body simulations (unchecked), but im still getting them in the work queue.

If no work for selected applications is available, accept work from other applications? Uncheck the box.
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Message 63422 - Posted: 20 Apr 2015, 20:07:36 UTC - in response to Message 63421.  
Last modified: 20 Apr 2015, 20:08:33 UTC

So, the "yes" should be set to "no"?

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swiftmallard
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Message 63424 - Posted: 20 Apr 2015, 22:05:09 UTC

Just make certain that box is not checked and save your preferences. You will then not receive n-body work. Then abort any you have and you'll be good to go.
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Profile Keith Myers
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Message 63425 - Posted: 20 Apr 2015, 22:06:13 UTC - in response to Message 63422.  

So, the "yes" should be set to "no"?




Correct.

Cheers, Keith
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Matthias Lehmkuhl

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Message 63468 - Posted: 27 Apr 2015, 13:08:54 UTC

found also one result and aborted it
WU http://milkyway.cs.rpi.edu/milkyway/workunit.php?wuid=762546148
Matthias

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Nick

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Message 63492 - Posted: 2 May 2015, 0:56:23 UTC

I'm another one who had to disable n-body simulations. It reached 100% but continued on endlessly.
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