This is: The GMD Multigrid Solvers Authors: Various Contact: gmap21@f1euler.gmd.de (Hubert Ritzdorf) Constraints: You must print the license agreement, sign it, and return it to the GMD. The license is really aimed at restricting commercial usage or the publishing of unfair comparisons without prior consultations. This package is available in Fortran-77. The sources are organized as follows: mg00.tgz The sources for the MG00 solver (gzip+tar) mg01.tgz The sources for the MG01 solver (gzip+tar) Conditions_of_Use The GMD license agreement To unpack this, use the following commands: mkdir gmd cd gmd zcat mg00.tgz | tar xvf - or gunzip mg00.tgz ; tar xvf mg00.tar or gtar zxvf mg00.tgz The contents of these files are as follows: mg00.tar % ls -lR ./mg00 total 256 -rw-r--r-- 1 douglas 42 Jun 27 15:49 Input -rw-r--r-- 1 douglas 799 Jun 27 15:49 Makefile -rw-r--r-- 1 douglas 2514 Jun 27 15:49 Output -rw-r--r-- 1 douglas 2881 Jun 27 15:49 Readme -rw-r--r-- 1 douglas 16605 Jun 27 15:49 driver.f -rw-r--r-- 1 douglas 100990 Jun 27 15:50 mg00mn.f -rw-r--r-- 1 douglas 122271 Jun 27 15:50 mg00su.f mg01.tar % ls -lR ./mg01 total 164 -rw-r--r-- 1 douglas 757 Jun 27 15:50 Makefile -rw-r--r-- 1 douglas 50771 Jun 27 15:50 Output -rw-r--r-- 1 douglas 2113 Jun 27 15:50 Readme -rw-r--r-- 1 douglas 3059 Jun 27 15:50 driver.f -rw-r--r-- 1 douglas 100815 Jun 27 15:50 mg01.f That's it!