[Nek5000-users] prex segmentation fault

Sat May 15 14:20:05 CDT 2010

On Sat, 2010-05-15 at 14:03 -0500, nek5000-users at lists.mcs.anl.gov
wrote:
> Frank,
> 
> Try reducing nelm in basics.inc and recompiling.
> 
> I'll try this w/ ifort -- I've only used it w/ pgf77 in recent
> years and Stefan does not use prex, so that part has not been
> as thoroughly checked as the rest of the code.

Hi Paul,

Thanks, that worked.

So not everyone else uses "prex"?  I had thought that was pretty much
the only option.  What other tools are people using for meshing?

Cheers,
Frank

> 
> Paul
> 
> 
> On Sat, 15 May 2010, nek5000-users at lists.mcs.anl.gov wrote:
> 
> > Hello all,
> 
> I am running into a segmentation fault when using "prex" on my 32 bit
> laptop.  This occurs when using both the gfortran and ifort compilers.
> More info below, the first is from the Intel compiler, the second from
> gfortran.
> 
> [root at frank temp4]# uname -a
> Linux frank 2.6.23.12-52.fc7 #1 SMP Tue Dec 18 21:18:02 EST 2007 i686
> i686 i386 GNU/Linux
> 
> [root at frank tools]# gdb prex
> GNU gdb Red Hat Linux (6.6-16.fc7rh)
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for
> details.
> This GDB was configured as "i386-redhat-linux-gnu"...
> (no debugging symbols found)
> Using host libthread_db library "/lib/libthread_db.so.1".
> (gdb) run
> Starting program: /usr/local/programs/nek5000/nek5/trunk/tools/bin/prex 
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> -Adobe-Helvetica-Medium-R-Normal--12-120-75-75-P-67-ISO8859-1
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0092c68a in memmove () from /lib/libc.so.6
> 
> 
> 
> 
> [root at frank tools]# gdb prex
> GNU gdb Red Hat Linux (6.6-16.fc7rh)
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for
> details.
> This GDB was configured as "i386-redhat-linux-gnu"...
> (no debugging symbols found)
> Using host libthread_db library "/lib/libthread_db.so.1".
> (gdb) run
> Starting program: /usr/local/programs/nek5000/nek5/trunk/tools/bin/prex 
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> (no debugging symbols found)
> -Adobe-Helvetica-Medium-R-Normal--12-120-75-75-P-67-ISO8859-1
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0092c68a in memmove () from /lib/libc.so.6
> (gdb) where
> #0  0x0092c68a in memmove () from /lib/libc.so.6
> #1  0x0017994c in _gfortran_copy_string ()
> from /usr/lib/libgfortran.so.1
> #2  0x0809ddca in data_ ()
> #3  0x080494d2 in fprep_ ()
> #4  0x080ea1a9 in mainc_ ()
> #5  0x080a662b in MAIN__ ()
> #6  0x080ea1d7 in main ()
> (gdb)
> 
> -- 
> Frank Herbert Muldoon, Ph.D. Mechanical Engineering
> Technische Universität Wien (Technical University of Vienna)
> Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
> Mechanics and Heat Transfer)
> Resselgasse 3
> 1040 Wien
> Tel: +4315880132232
> Fax: +4315880132299 
> Cell:+436765203470
> fmuldoo (skype)
> http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html
> 
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> _______________________________________________ Nek5000-users mailing list Nek5000-users at lists.mcs.anl.gov https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
-- 
Frank Herbert Muldoon, Ph.D. Mechanical Engineering
Technische Universität Wien (Technical University of Vienna)
Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid
Mechanics and Heat Transfer)
Resselgasse 3
1040 Wien
Tel: +4315880132232
Fax: +4315880132299 
Cell:+436765203470
fmuldoo (skype)
http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.html