[DFTB-Plus-User] Error message of "severe (174): SIGSEGV, segmentation fault occurred"

[Ben Hourahine]

Hello WU Xing,

I would like to add to Bálint's comment, that you also appear to be
running in parallel (there is some message about 'nodes=2:ppn=2' in part
of the error stream). Is this a shared memory machine, or are you using
something like mpirun?

In either case, I would suggest you try using a serial run with only a
single processor as a first attempt. 300 atoms is quite a small system
(unless you have many d or f electron atomic species), so you may even
be able to be run completely in serial.

Regards

Ben

#WU XING# wrote:
> Dear All users,
> 
>  
> 
> I run DFTB+ on a machine of Darwin Linux Cluster, consisting
> x86_64architecture. My model consists ~300 atoms so it is very large. I
> set the run time to 240 hours, but it stops after 15 hours. And the
> error message is the following:
> 
>  
> 
> forrtl: severe (174): SIGSEGV, segmentation fault occurred
> 
> Image              PC                Routine            Line       
> Source            
> 
> libpthread.so.0    000000315850C430  Unknown               Unknown  Unknown
> 
> dftb+              0000000000DF7991  Unknown               Unknown  Unknown
> 
> dftb+              0000000000B55725  Unknown               Unknown  Unknown
> 
> dftb+              000000000080D037  Unknown               Unknown  Unknown
> 
> dftb+              0000000000805826  Unknown               Unknown  Unknown
> 
> dftb+              00000000006C0D20  Unknown               Unknown  Unknown
> 
> dftb+              00000000005A19BF  Unknown               Unknown  Unknown
> 
> dftb+              000000000057C194  Unknown               Unknown  Unknown
> 
> dftb+              00000000004F3AD3  Unknown               Unknown  Unknown
> 
> dftb+              00000000004C870A  Unknown               Unknown  Unknown
> 
> dftb+              0000000000411999  Unknown               Unknown  Unknown
> 
> dftb+              000000000040D8E2  Unknown               Unknown  Unknown
> 
> libc.so.6          000000315721C3FB  Unknown               Unknown  Unknown
> 
> dftb+              000000000040D829  Unknown               Unknown  Unknown
> 
>  
> 
>  
> 
> I contact with the machine technicians, and they suggest me to contact
> with the author of the program because they do not know the meaning of
> the error message.
> 
>  
> 
> Also the following message is found in the output file.
> 
>  
> 
> Resources List:            nodes=2:ppn=2,walltime=240:00:00
> 
> Resources Used:           
> cput=15:05:48,mem=269772kb,vmem=520196kb,walltime=14:49:16
> 
>  
> 
>  
> 
> Could anyone help me to explain what is the meaning of that error message?
> 
>  
> 
> Sincerely Yours
> 
> ***********************************************
> WU Xing (Ms.)
> Email: wu0008ng at ntu.edu.sg <mailto:wu0008ng at ntu.edu.sg>
> ***********************************************
> 
>  
> 

-- 
     Dr. B. Hourahine, SUPA, Department of Physics,
   University of Strathclyde, John Anderson Building,
          107 Rottenrow, Glasgow G4 0NG, UK.
    +44 141 548 2325, benjamin.hourahine at strath.ac.uk
   The University of Strathclyde is a charitable body,
registered in Scotland, with registration number SC015263