The ABINIT Users Mailing List ( CLOSED )

["Matteo Giantomassi" <Matteo.Giantomassi@uclouvain.be>]

> Hi,
>
> Le Thu, 2 Jul 2009 17:11:21 +0200 (CEST), Kris Andersen
> <kris.andersen@nau.edu> a écrit :
>
>> I'm having a problem compiling Abinit on a Cray XD1 with the PGI
>> compiler.
>
> The PGI compiler is full of bugs and - as you've just experienced - not
> very
> stable. Your problems likely come from the compiler being unable to
> optimize
> the code and aborting dirtily.
>
> One possible solution would be to decrease the optimizations for the
> directories involved. Details can be found in
> ~abinit/doc/config/build-config.ac. Look for "fcflags_opt_*".
>
> To confirm that this is an optimization issue, you may also pass
> "--enable-debug" to the configure script. the build should then succeed.

 Dear Kris,

 You might try with -O0 although, according to my experience, lowering the
 optimization doesn't help solve the problem.

 It seems that PGI doesn't like the GW part at all!
 For PGIv6, I had to patch the code in order to completely remove the GW
routines.
 More recent versions of PGI are not able to compile basic modules required
 in several parts of the implementation thus patching the code has became
 very difficult and painful.

 I've encountered problems very similar to the ones you are reporting.
 unfortunately, PGI doesn't provide explicative error messages and
understanding  what's going wrong is not so easy.
 That's also the reason why PGI has been recently removed from the
 set of compilers that are systematically tested during our developments.

 Note that version 5.8.3 compiles and runs correctly on several platforms.
 It has been tested with gfortran43, ifc10, g95 and xlf.
 You might try one of these compilers, especially if you are planning
 to do GW calculations.

 Best Regards
 Matteo Giantomassi