[Pw_forum] Compilation trouble with g95 on AMD64 Athlon 3500
Andrea Ferretti
ferretti.andrea at unimore.it
Sun Apr 29 20:46:04 CEST 2007
Dear Merlin,
>
> I tried to compile espresso-3.2 on an AMD64 Athlon 3.5 GHz, using g95, and I
> have the following error running the example01:
>
> from create_directory : error #4294967295
> unable to create directory ./silicon.save
the error you are experiencing is, I think, a different one with respect
to that from the post below...
the present one is a run-time error while the one posted was due to a
complain of the compiler at compile-time...
it seems this is not due to iotk, but rather to the usage of the mkdir
c-function
as you can see from the error number (which sounds as random), something
nasty is occurring...
basically I think the problem is the following:
in the create_directory routine, the error code (which causes the crash if
different from zero), is directly taken from the call
IF ( ionode ) ierr = c_mkdir( TRIM( dirname ), LEN_TRIM( dirname ) )
that is, it is returned from a wrapper to a c-lib function (mkdir)
since you are on a 64bit architecture, default integers maybe 4bytes
(32bit) or
8bytes (64bit) long (only pointers are alsways 8bytes long! )...
which one depends on the fortran compiler...
I suspect you are using 8bytes default integers, while mkdir is returning
a 4bytes integer... this may cause the almost random error number and the
following crash of the code....
if this is the case, try to compile espresso with a flag forcing
32 bit integers (maybe something like -i4, to be set manually in FFLAGS,
make.sys file)
otherwise, download the g95 version with 32bit integers as default...
hope it helps
andrea
>
> I have seen somewhere that it may be due to a problem with iotk:
> ( http://www.democritos.it/pipermail/pw_forum/2006-October/005151.html )
>
> >
> > this is a kind inconsistency in call to intrinsic functions;
> >
> > such problems have been fixed in the cvs version of espresso
> > substituting lines like
> >
> > control = modulo(header,iotk_ncontrol+1)
> >
> > with
> >
> > control = modulo(header,int(iotk_ncontrol+1,kind=kind(header)))
> >
> > you can try to repeat the trick for all the lines where the compiler
> > complains, otherwise try to you replace the espresso-3.1.1/iotk/ with
> > espresso_CVS/iotk, it may probably work without any further problem..
> >
>
--
Andrea Ferretti
National Research Center S3, CNR-INFM ( http://s3.infm.it )
Dipartimento di Fisica, Universita' di Modena e Reggio Emilia
Via Campi 213/A I-41100 Modena, Italy
Tel: +39 059 2055301 Fax: +39 059 374794
Skype: andrea_ferretti
URL: http://www.nanoscience.unimo.it
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