Andrew> always useful. If there are people out there who are Andrew> running production services on beowulf-like clusters with Andrew> a non-redhat based distribution (meaning a customized Andrew> red-hat image like rocks or the old VALinux distro, not Andrew> mandrake), I would really appreciate a note about it. If Andrew> you migrated to something else from redhat, and care to Andrew> tell me why you did it and how it went, that would even be Hi Andrew, We have a 100+ processor cluster that we are happily using Debian on right now. I runs very happily with Grid Engine and MPI though I haven't personally tried it with Beowulf yet (there is a port of Debian for Beowulf[1]). If you have any specific questions, feel free to ask. Good Luck, Patrick. Footnotes: [1] http://www.debian.org/ports/beowulf/ -- "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rich Cook .. Patrick Audley paudley@compbio.dundee.ac.uk Computational Biology http://www.compbio.dundee.ac.uk University of Dundee http://blackcat.ca Dundee, Scotland +44 1382 348721