Re: NEC-LIST: Nec-2 windows-based Fortran compilation needed.

Your problem may not be the compiled code you created, but your XP setup.
 You may be running into a memory limitation and using virtual memory.
Before you give up on your current route, check the use of memory first.
Windows has always been a memory hog and many folks have run programs
with memory control turned off for this reason. It is real easy for a
program to go from 2 hours to more than 24 hours when virtual memory is
used.

I do not know enough about g77 to comment on the potential problems
there.

> to overcome the problem of not being able to run the 'traditional'
> nec2d.exe executable (created by Jos Bergevoet) on the latest
> windows-XP systems I looked for a way to get a more general nec-2
> executable.
>
> I succeeded in getting the original nec-2 sources which I then
> modified slightly to support more modern file-IO. Because of the 'none
> commercial' intentions of all this I used the g77 compiler because it's
> freeware status.
>
> But just yesterday I discovered one of the major drawbacks of this.
> In some
>
> cases when using relatively large segment numbers the required
> calculation time is some factor six more than when using the original
> nec2d.exe.
>
> Now my hope is that I can contact people on this list who have
> available a more state-of-the-art 'wintel' based Fortran compiler and
> who are willing to compile and link my sources to create a stand-alone
> windows-based executable file.
>
> As I can not attach these sources in this posting, for those who would
> like to give it a try to support me, the sources are available in the
> nec2dXS.zip file on www.qsl/net/wb6tpu/swindex.html, together with a
> short description how I compiled then using the g77 compiler.

-- 
Dr. William A. Davis, Director of VT Antenna Lab
The Bradley Dept of Elec & Comp Engr, Virginia Tech
Blacksburg, VA 24061-0111  [(540)231-6307, 231-3362FAX]
http://antenna.ece.vt.edu
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