[Wien] SIGSEGV, segmentation fault occurred

[Gerhard H Fecher]

Their may be several possibilities that cause the crash:

1.) a real problem in the program, then you may recompile at least lapw1c with 
the option -traceback (check the Fortran manual) then the lines you gave 
below should tell were the error occurs, next you can try do debug the 
program (switch on the appropriate debug options before compiling) using the 
idb debugger coming with Intel fortran (if you installed it together with 
Fortran).

2.) there may be some incompatibilities with the libraries you use. libc.so.6 
suggests that you used dynamic linking, in that case you may check if there 
are version conflicts between the libraries, try to find out more information 
by using ldd and ld -M. In that case ask your administrator to solve the 
conflicts.
You can also try to start with less aggresive optimization options (-O0 but 
becomes very slow).

3) check some of the tips given by others in the Wien or Intel userforums, 
sometimes those tips may help to solve particular problems.

4) something with your input may be wrong.
I experienced recently a similar problem with lapw1 (not lapw1c) for a much 
smaller system namely simple fcc Ni, it seems that the program crashed when 
one of the rmt's was too big, actually I did not find the internal cause of 
the crash.

Ciao and good luck
Gerhard

Am Montag, 29. August 2005 22:00 schrieb Bohdan Andriyevsky:
> Dear WIEN2k users,
> What can be the reason of the next STDOUT:
> 
> LAPW0 END
> forrtl: severe (174): SIGSEGV, segmentation fault occurred
> Image              PC        Routine            Line        Source             
> lapw1c             0806AA7C  Unknown               Unknown  Unknown
> lapw1c             08054C2F  Unknown               Unknown  Unknown
> lapw1c             080734A6  Unknown               Unknown  Unknown
> lapw1c             0804DDF4  Unknown               Unknown  Unknown
> libc.so.6          00C46770  Unknown               Unknown  Unknown
> lapw1c             0804DD01  Unknown               Unknown  Unknown
> 
> Crystal unit cell consists of 50 atoms (C, N, O, H). 
> (OS: Red Hat Linux 9; processor: P3 1200 MHz; memory - 512 Mb).
> Thanks in advance for yours help.
> 
> B.Andriyevsky
> 
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