Re: endrun(888) problem

From: Ali Snedden <asnedden_at_nd.edu>
Date: Wed, 7 May 2014 11:46:13 -0400

You might read the user manual and check that you are using reasonable
values in your parameter file (specifically All.PartAllocFactor). Perhaps
All.MaxPart is too small or you're not using a large enough value for
MaxNodes. Good luck.


~ali


On Wed, May 7, 2014 at 11:31 AM, arlindo.trindade_at_gmail.com <
arlindo.trindade_at_gmail.com> wrote:

> Hi Ali,
>
> Thanks for your email.
>
> I've changed the values that are passed to each endrun as you suggested
> and the code breaks at line 371 in the forcetree.c file. But still I can't
> find out what causes this error.
>
> Do you have any ideas?
>
> Best regards,
> Arlindo
>
>
>
> 2014-05-07 16:03 GMT+01:00 Ali Snedden <asnedden_at_nd.edu>:
>
> Hello Arlindo,
>>
>> It would be nice to know which line it actually breaks at. You could use
>> a debugger like Gdb or just change the values passed to each line that has
>> endrun(888).
>>
>> It is worth your time to learn how to use a debugger. From my personal
>> experience, using a debugger has probably cut my development time between
>> 30-50% compared with just using print statements.
>>
>> To use Gdb for a parallel program. First compile Gadget with the '-g'
>> compiler option. Then enter the following into your command line.
>>
>> mpirun -np 2 xterm -geometry 100x62 -sb -sl 10000 -e gdb
>> ./Gadget2
>>
>> I added a bunch of extra options to customize the x11 window. Then in
>> each of your two x11 windows enter the command line arguments (i.e. pass
>> your parameter file).
>>
>> start lcdm.param
>>
>> Then you can set breakpoints and do other neat things by following these
>> helpful websites.
>>
>> http://betterexplained.com/articles/debugging-with-gdb/
>> http://www.unknownroad.com/rtfm/gdbtut/gdbtoc.html
>>
>>
>> Best Regards
>> ~Ali
>>
>>
>> On Wed, May 7, 2014 at 10:42 AM, Arlindo Trindade _at_ gmail <
>> arlindo.trindade_at_gmail.com> wrote:
>>
>>>
>>> Hi all,
>>>
>>> I'm trying to running some N-body simulation tests with Gadget 2 on a
>>> cluster. The simulation is very very small, the number of particles is
>>> N=2*16^3 ( dark matter + gas) and the boxsize is L=3.125 Mpc. However I get
>>> a endrun 888 error. The same thing happens if I increase the size of the
>>> simulation ( both L and N). I've identified the files where the function
>>> endrun is called with the code 888 ( timestep.c lines 482 and 530,
>>> forcetree.c line 371) but I still can't understand what the problem is and
>>> thus I can't solve this problem.
>>>
>>> Does anyone has a suggestion?
>>>
>>> Cheers,
>>> Arlindo
>>>
>>>
>>>
>>>
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>>
>>
>>
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>>
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>>
>
>
> --
> Arlindo Trindade
>
>
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Received on 2014-05-07 17:46:19

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