[Beowulf] progress on ifort and gfortran issue

Paulo Afonso Lopes pal at di.fct.unl.pt
Tue Feb 24 12:49:58 EST 2009


If you compile your code with -g (debugging support), and "just run"
normally, it should crash and create a core file in the working dir. (do a
ls -la to find it)

If you gdb --core=<your core file here> it will point you to the offending
instruction (helps if you are running on the dir where you have your
source code :-) otherwise you should add --directory=<your sources>

paulo


> Dear Mark, Dmitri, Xavier, Dave, and Tom,
> thank you very much for your suggestions.
> First of all, I tried the compilation
> with -fbounds-check option and I did not get any error
> message.
> When I checked the site http://gcc.gnu.org/wiki/GFortran
> our gfortran which shows:
> fumie at e3sfc32:~/ngs-fdcn-code> gfortran --version
> GNU Fortran (GCC) 4.4.0 20081011 (experimental) [trunk revision 141054]
> Copyright (C) 2008 Free Software Foundation, Inc.
> seems to be the latest now.
>
> There is no file to read in as this is the
> very primitive code for the new algorithm test,
>  not the production code(=reference code).
>
> We are going to try to learn  gdb so that
> we can understand where the segfault comes from.
>
> I will keep you updated.
> Thank you very much for your help
> Best wishes, Fumie
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-- 
Paulo Afonso Lopes                        | Tel: +351- 21 294 8536
Departamento de Informática               | 294 8300 ext.10702
Faculdade de Ciências e Tecnologia        | Fax: +351- 21 294 8541
Universidade Nova de Lisboa               | e-mail: pal at di.fct.unl.pt
2829-516 Caparica, PORTUGAL



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