[Beowulf] OS for 64 bit AMD
landman at scalableinformatics.com
Mon Apr 4 23:12:54 EDT 2005
Mike Davis wrote:
> What are the good reasons not to have g77 in gcc4? I admit ignorance on
> the subject of gcc4, but g77 is useful to many in the scientific and
> academic communities.
g77 does not work with the tree-ssa branch that gcc4 is emerging/has
emerged from (please correct me if I am wrong about the details on this
Greg/Toon/others). gfortran is going to take its place (again please
correct me if this statement is not correct). c.f.
http://gcc.gnu.org/develop.html and related and the mailing list
archives at http://gcc.gnu.org/ml/fortran/ and
http://gcc.gnu.org/fortran/ . The idea is that gfortran is a f95
compiler to supplant g77 (an f77 + some f90 extensions) due in large
part to the issues in carrying forward a pure f77 compiler when many in
the fortran world are at/beyond f95. That is, fortran will be
available, but the compiler appears to be an f95 compiler going forward.
That said, there are excellent commercial compilers available from
Greg's company (PathScale), the Portland Group (been playing with v6.0),
Intel for their processors, and others on the x86/AMD64/IA64 stream.
For those of the PPC persuasion, the IBM compilers are quite good.
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 734 786 8452
cell : +1 734 612 4615
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