WIEN97 is written in FORTRAN 77 (but requires COMPLEX*16) and requires a UNIX operating system since the programs are linked together via C-shell scripts. It has been implemented sucessfully on the following computer systems: Pentium (PRO) systems running under Linux, IBM RS6000, HP 730, SGI Power Challenge, DEC Alpha (under OSF1 and Linux), SUN, SNI Fujitsu S100 and NEC SX4. But it was also reported to run on CONVEX and Cray systems. Hardware requirements will change from case to case (small cases with 10 atoms per unit cell can be run on a Pentium PC with 64 Mb under Linux), but we recommend a powerful workstation with at least 128 Mb (better 256 Mb or more) memory and plenty of disk space (a few Gb).
In order to use all options and features (such as the new graphical user interface WIEN in a BOX or some of its plotting tools) the following public domain program packages in addition to a F77 compiler must be installed:
Usually these packages should be available on modern systems. If one of these packages is not available it can either be installed from public domain sources (ask your computing center, use the WWW to search for the nearest location of these packages) or the corresponding configuration may be changed (e.g. using vi instead of emacs). None of the principal components of WIEN97 requires these packages, only WIEN in a BOX needs them.