This directory contains several versions of a hierarchical O(N log N) N-body code (see Barnes, J.E. & Hut, P. 1986, Nature, 324, 446). These programs are provided as free software under the GNU GPL. If you use them for published research, I would appreciate a brief mention in the acknowledgements, and a copy of your paper.
Source code is available as bundled ascii files or as compressed tar (tgz) archives. To unpack a bundled ascii file, save it in your target directory and invoke the unix shell (sh) with the file as an argument. To unpack a compressed tar file, save it and invoke the unix tar command (tar -xvf) with the file as an argument. The following programs are currently available:
Joshua E. Barnes
(barnes at ifa.hawaii.edu)
23 March 2015