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Re: gfortran



Francesco Pietra wrote:
On Monday 26 June 2006 16:12, Lennart Sorensen wrote:
On Sun, Jun 25, 2006 at 09:26:19AM +0200, Francesco Pietra wrote:
I wish to compile on amd64 debian etch (two dual opteron on Tyan K8WE
S2895) a program (gamess-us, as a merely a curiosity to see how it runs
in comparison with mpqc) that is indicated:

"Your computer must have a FORTRAN compiler and a C compiler in order to
compile GAMESS from its source. No other software is required, usually
(the exceptions are high end parallel systems which may require extra
messaging software)"

$gcc -v
gcc version 4.1.1 20060511 (prerelease) (Debian 4.1.0-4)

From
$apt-cache search gfortran
and
$apt-cache show gfortran
I do not understand if I need to do:
#aptitude install gfortran
or if gfortran is already installed with gcc

I have purged from lib32 and, of course, I need the program (gamess-us)
to run on the four nodes; if any doubt that it will run in full parallel
mode, I'll notgo to install.
The gnu fortran compiler is named g77 I believe.

~# apt-cache show g77
Package: g77
Priority: optional
Section: devel
Installed-Size: 8
Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
Architecture: i386
Source: gcc-defaults (1.36)
Version: 4:3.4.6-5
Provides: fortran-compiler
Depends: cpp (>= 4:4.1.1-1), gcc (>= 4:4.1.1-1), g77-3.4 (>= 3.4.6-1)
Suggests: g77-doc
Filename: pool/main/g/gcc-defaults/g77_3.4.6-5_i386.deb
Size: 1254
MD5sum: 6a6a5649c0a0dae4b65f4aaba135f856
Description: The GNU Fortran 77 compiler
 This is the GNU g77 Fortran compiler, which compiles Fortran 77 on
platforms supported by the gcc compiler. It uses the gcc backend to
generate optimized code.
 .
 This is a dependency package providing the default GNU Fortran 77
compiler. Tag: devel::compiler, interface::commandline, langdevel::fortran,
made-of::lang:c, role::aux:metapackage, special::meta,
works-with::software:source

Or try apt-cache search fortran and see if gives any interesting options.

Later I have been advised that:

g77 cannot compile working 64-bit code as of yet.

We make extensive use of Portland, Intel and GNU compilers (both C and Fortran) at work - all of them work fine, and there are certainly no issues with G77 on AMD64. That said, our GAMESS installation was compiled with Intel 9.0 (as GNU is almost always considerably slower than PGI or Intel)



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