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MGNet
Introduction
This is a repository for information related to multigrid, multilevel, multiscale, aggregation, defect correction, and domain decomposition methods. These methods are used primarily by scientists and engineers to solve partial differential equations on serial or parallel computers.
Multigrid has the property of using linear time and space to solve a collection of interesting problems, thus making it a very fast, robust solver. Domain decomposition methods are extremely useful for solving problems on oddly shaped domains or for parallelizing standard iterative methods.
While MGNet tries to be the first and last place anyone interested in multigrid or domain decomposition methods needs to look, this is obviously not always possible. Here are some other sources of interest to the multigrid or domain decomposition communities.
You may retrieve any file in MGNet. You may also submit files to the archive.
Warning: Unless stated otherwise, everything in this repository is use at your own risk. There are no warantees implied or expressed, not even that anything does what it claims to do or will even install.
Newsletters
At the beginning of each month, a newsletter is sent out to the entire MGNet mailing list. To post a message to the MGNet newsletter, send electronic mail to The newsletter always needs more content. Items that are particularly sought after include technical discussions (but not tirades), meeting and course information relevant to multigrid, and abstracts for codes, papers, and books.
You can receive a free subscription to the newsletter by sending a message to with your name and electronic mail address in the message. You will also receive more information about MGNet when your request is processed.
Preprints
MGNet contains a large number of papers on many topics, not just multigrid. However, most papers have a partial differential equation or two in them and are aimed at an audience of scientists and engineers.
Bibliography
MGNet's bibliography grows whenever new entries come to the attention of its authors. (Please send yours.) This is a large BibTeX database which you are free to use. The bibliography is available as a document, too.
Tutorials
If you are new to the multigrid or domain decomposition fields, or just wonder what MGNet is all about, look here. There are pointers to some rather nice tutorials on the subject.
Free Software
A number of software packages are stored on MGNet. Some are public domain, some are copyrighted, and some may someday be copyrighted. If you have a multigrid, domain decomposition, or parallel code or package you can place a copy in MGNet, too.
Virtual Proceedings
Several multigrid conferences have a habit of publishing pre-proceedings or electronic proceedings. The Copper Mountain (Colorado, USA) multigrid conferences (held on odd numbered years in April when the snow is still good for skiing) and the GAMM workshops on parallel multigrid (held in Germany and Austria from time to time at rather nice places) are examples of this.
Find out why multigrid and domain decomposition are such nice fields to work in.
Conference Announcements
Numerous conferences are planned, months in advance. Here are a some that would interest MGNet's audience. This area of MGNet changes often.
Mystery Link
This changes from time to time. usually on Monday. The goal is for it to change once a week, but monthly seems to be the frequency at the moment.
The Sponsors
MGNet is supported in part by IBM's Research Division was a sponsor from 1991-1996. In addition, many people have contributed suggestions and their own time to make MGNet a success. If you have a suggestion, please send me a note.
Cheers,
Craig C. Douglas

Wed Dec 31 19:00:00 1969