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Re: [surjan@chem.elte.hu: x86_64 fortran]


At 04:00 AM 7/16/2004, surjan@chem.elte.hu wrote:

 Dear Sir:
          May I ask you if the g95 gnu project can provide us
a (free) fortran compiler that can run on an AMD opteron 64 bit
platform? We have tested so far the 64 bit extension of g77,
which is nice, but cannot address large memory due to the f77
limitations, I think. Any suggestion would be appreciated!

With many thanks,
                  Peter Surjan

I understand this list relates to the gfortran project, as g95 is not a gnu project. I'll go further off topic, with a partial comment about g77. g77, along with certain commercial compilers for x86-64, has a 2GB limit on objects such as common blocks and arrays. That's not a g77 limit, as g77 for other 64-bit OS can do 4GB objects. In either case, you can have multiple common blocks or arrays of maximum size, so your assertion that you cannot address large memory is only partly true, and certainly would be contested by those who sell these systems. Other commercial Fortran compilers for these systems do support data objects larger than 4GB. I'd be interested to know what gfortran does, maybe I'll try it out.



Tim Prince



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