Send mail to: mgnet@cs.yale.edu for the digests or bakeoff mgnet-requests@cs.yale.edu for comments or help Anonymous ftp repository: www.mgnet.org (128.163.209.19) Current editor: Craig Douglas douglas-craig@cs.yale.edu WWW Sites: http://www.mgnet.org or http://casper.cs.yale.edu/mgnet/www/mgnet.html or http://www.cerfacs.fr/~douglas/mgnet.html or http://phase.hpcc.jp/mirrors/mgnet or http://www.tat.physik.uni-tuebingen.de/~mgnet To be removed from the mailing list, just reply to a message. My real e-mail address is in the From field. Today's editor: Craig Douglas (douglas-craig@cs.yale.edu) Volume 14, Number 2 (approximately February 29, 2004) Volume 14, Number 3 (approximately March 31, 2004) Volume 14, Number 4 (approximately April 30, 2004) Volume 14, Number 5 (approximately May 31, 2004) Today's topics: What Happened to MGNet? Copper Mountain Iterative Methods Postdoc Positions at RICAM (Linz, Austria) Conference announcement for MGnet NLA Special-Issue available online Contents of Journal of Korean SIAM Preliminary Announcement EMG2005 Mathematica Geometric Multigrid Tutorial Fifth ACTS Collection Workshop ETNA Special Issue on Saddle Point Problems ------------------------------------------------------- Date: Sun, 30 May 2004 10:22:21 -0400 From: Craig DouglasSubject: What Happened to MGNet? No, you have not missed volume 14, numbers 2-4 yet... I keep the real source of MGNet off the Internet as a result of several hackers over the years breaking into the web server through various operating system defects. This has worked very well until February. The same chip failed on the motherboards of 3 machines and a fourth machine was unusable on arrival. Having to reload all of my files 7 times since the middle of February really shut MGNet down for updates. It will take a little while longer to get completely back up to speed. Please have patience. ------------------------------------------------------- Date: Sun, 30 May 2004 14:21:22 -0400 From: Craig Douglas Subject: Copper Mountain Iterative Methods The virtual proceedings are late... really late. However, I would like to invite all of the attendees to submit a paper, extended abstract, or presentation. If you sent me a paper already, I have not lost it. My email was intact throughout the computer failures. ------------------------------------------------------- Date: Wed, 25 Feb 2004 10:03:35 +0100 From: Roland Griesse Subject: Postdoc Positions at RICAM (Linz, Austria) POSTDOCPOSITIONS AT THE JOHANN RADON INSTITUTE FOR COMPUTATIONAL AND APPLIED MATHEMATICS (RICAM) OF THE AUSTRIAN ACADEMY OF SCIENCES, AUSTRIA RICAM is a research institute which went into operation on January 1, 2003, and will be gradually built up to a total of 25 PostDoc positions in six areas: * Scientific Computing - Computational Methods for Direct Field Problems * Scientific Computing - Inverse Problems * Scientific Computing - Optimization and Control * Symbolic Computation * Analysis of Partial Differential Equations * Mathematical Finance The institute is housed on the campus of the Johannes Kepler Universitaet in Linz, a town of about 200.000 on the Danube, very close to the Austrian Alps, and half-way between Vienna and Salzburg. The Scientific computing - Optimization and Control Group is searching two PostDocs with a strong background in applications to partial differential equations or variational problems. Researchers with a background in fluid mechanics or life science applications are especially welcome. For information contact Prof. K. Kunisch at karl.kunisch@uni-graz.at. PostDocs interested to work in one of the other research areas are encouraged to inquire with the director, Prof. Heinz Engl, heinz.engl@oeaw.ac.at For all positions a doctorate in mathematics or a closely related field is required. The working language is English. The positions are initially for up to three years, one renewal for three more years is possible depending on achievements. Two sets of applications with personal and scientific data, copies of relevant documents and a statement about scientific interests and achievements should be sent to Prof. Dr. Heinz W. Engl Johann Radon Institute Austrian Academy of Sciences Altenbergerstrassee 69 A-4040 Linz, Austria ------------------------------------------------------- Date: Thu, 11 Mar 2004 14:08:38 -0600 From: "Chen, Zhangxin" Subject: Conference announcement for MGnet Announcement and Call for Papers International Conference on Scientific Computing in Petroleum Industry August 4--7, 2004 Beijing, P.R. China http://www.rdcps.ac.cn/scpi2004/ Sponsors: * China National Offshore Oil Corp. (CNOOC) * Institute of Software, Chinese Academy of Science (CAS) * Science and Technology Cooperation Office, CAS * The Major Basic Project of China Conference Chairs: Jiachang Sun, Institute of Software, CAS Guanquan Zhang, Institute of Computational Mathematics, CAS Advisory Committee: Dakuang Han, China National Petroleum Corp., China Zaitian Ma, Tongji University, China Zhongci Shi, Institute of Computational Mathematics, CAS Hengyi Zeng, China National Offshore Oil Corp., China Zhemin Zheng, Institute of Mechanics, Chinese Academy of Sciences Program Committee: Jianwen Cao, Institute of Software, CAS Zhangxing Chen, Southern Methodist University, USA Qiang Du (Chair), Penn State University, USA Longan Ying, Peking University, China Yirang Yuan, Shandong University, China Organizing Committee: Zhiming Chen, Institute of Computational Mathematics, CAS Shenghou He, China Petroleum & Chemical Corp., China Yucheng Li (Chair), Institute of Software, CAS Weiyuan, Wang, China National Offshore Oil Corp. China Yingxiang Wu, Institute of Mechanics, Chinese Academy of Sciences Invited Speakers: Zhongzhi Bai, Institute of Computational Mathematics, CAS Biondo Biondi, Stanford University, USA Xiao-chuan Cai, University of Colorado at Boulder, USA Jianwen Cao, Institute of Software, CAS Zhangxing Chen, Southern Methodist University, USA Jim Douglas, Jr., Purdue University, USA Qiang Du, Penn State University, USA Weinan E, Princeton University, USA Richard E. Ewing, Texas A&M University, USA Dakuang Han, China National Petroleum Corp., China Hong Liu, Institute of Geology and Geophysics, CAS Wei Liu, Houston Technology Center of Baker Hughes, USA Yunqing Huang, Xiangtan University, China Yuanle Ma, Tsinghua University, China Zaitian Ma, Tongji University, China Hermilo Ramirez-Leon, Mexican Institute of Petroleum, Mexico Thomas Russell, University of Colorado, USA Jiachang Sun, Institute of Software, CAS, China Xue-cheng Tai, University of Bergen, Norway Danping Yang, Shandong University, China Yaozhong Yang, Shengli Petroleum Administrative Bureau, China Yirang, Yuan, Shandong University, China Hengyi, Zeng, China National Offshore Oil Corp., China Guanquan Zhang, Institute of Computational Mathematics, CAS Wensheng Zhang, Institute of Computational Mathematics, CAS Guozhong Zhao, Daqing Petroleum Administrative bureau, China Conference Themes: *Large scale reservoir numerical simulation: Algorithms, applications, parallel computation, and software *Continuation and subsurface imaging in seismic exploration *Wavefield modeling *Numerical computation of super-large scale algebraic equations: linear and nonlinear solution schemes, iterative methods, multigrid methods, and domain decomposition for reservoir simulation *Mathematical methods in petroleum industry *Key techniques for new generation of petroleum computing software Conference Format: The conference will consist of 45-minute invited talks and 30-minute contributed talks. The conference language is English. Call for Papers: Participants wishing to present a paper in a field related to the conference themes are invited to submit a one-page abstract in English to Dr. Hongwei Li at lhw@mail.rdcps.ac.cn. Please include the address, telephone, fax, and e-mail address of the primary contact person. The abstract can be submitted online through http://www.rdcps.ac.cn/scpi2004/ Important Dates: Deadline for title and abstract submission: April 20, 2004 Notification of acceptance of presentation: May 15, 2004 Early registration: June 15, 2004 Conference: August 4-7, 2004 IMPORTANCE: This conefernce is right before the conference: High Performance Computing and Applications (HPCA 2004), August 8--10, 2004, Shanghai, China. For more information on HPCA 2004, refer to http://www.smu.edu/math/CSC/index.html ------------------------------------------------------- Date: Wed, 17 Mar 2004 10:20:01 +0200 From: "Irad Yavneh" Subject: NLA Special-Issue available online Panayot has just informed me that the NLA CMMG special issue is now available online: http://www3.interscience.wiley.com/cgi-bin/jissue/107632537 Thanks very much to Panayot for the rapid and seamless handling! Irad Editor's Note: Here are the contents... ------------- Irad Yavneh Editorial (p 91) F. J. Gaspar, F. J. Lisbona, C. W. Oosterlee, R. Wienands A systematic comparison of coupled and distributive smoothing in multigrid for the poroelasticity system (p 93-113) Travis M. Austin, Thomas A. Manteuffel, Steve McCormick A robust multilevel approach for minimizing H(div)-dominated functionals in an H1-conforming finite element space (p 115-140) Mark F. Adams Algebraic multigrid methods for constrained linear systems with applications to contact problems in solid mechanics (p 141-153) Ulrike Meier Yang On the use of relaxation parameters in hybrid smoothers (p 155-172) C. C. Douglas, J. Hu, J. Ray, D. T. Thorne, R. S. Tuminaro Cache aware multigrid for variable coefficient elliptic problems on adaptive mesh refinement hierarchies (p 173-187) Ana H. Iontcheva, Panayot S. Vassilevski Monotone multigrid methods based on element agglomeration coarsening away from the contact boundary for the Signorini's problem (p 189-204) O. E. Livne Coarsening by compatible relaxation (p 205-227) Irene Livshits An algebraic multigrid wave-ray algorithm to solve eigenvalue problems for the Helmholtz operator (p 229-239) Gregory Dardyk, Irad Yavneh A multigrid approach to two-dimensional phase unwrapping (p 241-259) Maria Murillo, Xiao-Chuan Cai A fully implicit parallel algorithm for simulating the non-linear electrical act ivity of the heart (p 261-277) Benjamin Karl Bergen, Frank HC Subject: pltmg9.0/mgnet PLTMG 9.0 is a package for solving elliptic partial differential equations in general regions of the plane. It is based on continuous piecewise linear triangular finite elements, and features adaptive local mesh refinement, multigraph iteration, and pseudo-arclength continuation options for parameter dependencies. It also provides options for solving several classes of optimal control and obstacle problems. The package includes an initial mesh generator and several graphics packages. Support for the Bank-Holst parallel adaptive meshing strategy is also provided. PLTMG is provided as Fortran (and a little C) source code, in both single and double precision versions. The code has interfaces to X-Windows, MPI, and Michael Holst's OpenGL image viewer SG. The X-Windows, MPI, and SG interfaces require libraries that are NOT provided as part of the PLTMG package. PLTMG is available from Netlib, Mgnet, and my homepage: http://scicomp.ucsd.edu/~reb/ Editor's Note: See http://www.mgnet.org/mgnet-codes-pltmg.html ------------- ------------------------------------------------------- Date: Mon, 22 Mar 2004 15:57:02 +0900 From: Do Y. Kwak Subject: Contents of Journal of Korean SIAM I would like to post the contents of Journal of Korean SIAM which I am serving as an editor. Sincerely, Do Y. Kwak Professor, Managing Editor of J. KSIAM. Department of Mathematics KAIST(Korea Advanced Institute of Science and Technology) Taejon, Korea dykwak@math.kaist.ac.kr kdy@kaist.ac.kr The Korea Society for Industrial and Applied Mathematics Contents VOL. 7 No. 2 DECEMBER 2003 A surface extension method using several control functions Hoi Sub Kim, Kwan Pyo Ko and Gang Joon Yoon 1 Simulations in option pricing models applied to KOSPI200 Jonu Lee and Seki Kim 13 Controllability of perturbed integrodifferential systems with prescribed controls K.Balachandran and K.Sakthivel 23 Finite volume element methods for nonlinear parabolic integrodifferential problems Huanrong Li and Qian Li 35 On numerical properties of complex symmetric householder matrices Alicja Smoktunowicz, Adam Grabarski 51 A numerical method for solving the nonlinear integral equation of the second kind F.A. Salama 65 Multigrid method for an accurate semi-analytic finite difference scheme Jun S. Lee 75 Generalized systems of relaxed g--r cocoercive nonlinear variational inequalities and projection methods Ram U. Verma 83 ------------------------------------------------------- Date: Thu, 25 Mar 2004 13:49:09 +0100 From: Kees Oosterlee Subject: Preliminary Announcement EMG2005 EMG2005: 8th European Multigrid Conference 27-30 September 2005, Scheveningen, The Hague, The Netherlands Topics: Multigrid, multilevel and multiscale methods Venue: Scheveningen Pier, 300 meters offshore Organizing committee: P.Wesseling, TU Delft C.W. Oosterlee, TU Delft P. Hemker, CWI Amsterdam W. Hackbusch, MPI Leipzig G. Wittum, U. Heidelberg Further details will be made available via the conference website pcse.tudelft.nl/emg2005 Enquiries can be addressed by email to emg2005@math.tudelft.nl Posted by C.W. Oosterlee Delft University of Technology Faculty of Information Technology and Systems Numerical Analysis Group tel: +31 15 2788283 email: c.w.oosterlee@ewi.tudelft.nl http://ta.twi.tudelft.nl/people/C.W.Oosterlee ------------------------------------------------------- Date: Thu, 8 Apr 2004 13:08:46 +0200 (CEST) From: Oliver Ruebenkoenig Subject: Mathematica Geometric Multigrid Tutorial Perhaps i have something for http://www.mgnet.org/ I have written a mathematica tutorial for multigrid. The advantage of a mathematica tutorial are in the way mathematica allows to do documentation. It is possible to explain the principals of multigrid and immediately show the code leading to a multigrid algorithm. Thus the mathematica tutorial can be used to cross-check an implementation in another language. The home page of our mathematica packages is at: http://www.imtek.uni-freiburg.de/simulation/mathematica/IMSweb/ Unfortunately I am not able to convert the tutorial to html (this is a mathematica problem but I am working on this) Kind regards from Germany, Oliver Oliver Ruebenkoenig, Phone: ++49 +761 203 7385 Editor's Note: For the moment, use the link above. ------------- ------------------------------------------------------- Date: Wed, 21 Apr 2004 16:07:17 -0700 From: Tony Drummond Subject: Fifth ACTS Collection Workshop Fifth Workshop on the DOE Advanced Computational Software Collection http://acts.nersc.gov/events/Workshop2004 Enabling Technologies For High End Computer Simulations Place: Lawrence Berkeley National Laboratory Date: August 24-27, 2004 The DOE Advanced CompuTational Software Collection (ACTS Collection, http://acts.nersc.gov) comprises a set of tools mainly developed at the Department of Energy's (DOE) laboratories. These software tools aim to simplify the solution of common and important computational problems and have substantially benefited a wide range of scientific and industrial applications. These benefits are accounted not only for running efficiently in high performing computing environments but also realizing computation that would not have been possible otherwise. Despite these successes, there is still a need for a greater infrastructure to each out academia and industry through a dissemination and instruction on the state-of-the-art tools for high performance computing environments and simultaneously provide an umbrella for tool developers to receive the feedback from these communities. This workshop is part of an approach to build such an infrastructure. The four-day workshop will present an introduction to the ACTS Collection for application scientists whose research demand includes either large amounts of computation, a large volume of data manipulation, the use of robust numerical algorithms, or combinations of these. The workshop will include a range of tutorials on the tools (currently available in the collection and some deliverables from the DOE SciDAC ISICs), discussion sessions aimed to solve specific computational needs by the participants, and hands-on practices using the NERSC's state-of-the-art computers. We are planning to organize parallel sessions and group the tutorials by topics, as follows: + Direct and Iterative Methods for the solution of linear and non-linear systems of equations + PDE's and Multi-level Methods + Numerical Optimization + Structured and Unstructured meshes (Generation, Manipulation and Computation) + Development of High Performance Computing applications + Performance monitoring and tuning + Grid computing + Software Interoperability Who Should attend this workshop? This workshop is opened to computational scientists from industry and academia. Registration fees are fully sponsored by the DOE's office of Science. In addition, DOE will sponsor travel expenses for a limited number of graduate students and postdoctoral fellows. This support includes round-trip transportation to and from Berkeley, local transportation in Berkeley, lodging, breakfasts, lunches and workshop materials. The format of this workshop is tailored to the computational problems and needs of its participants and functionality available in the ACTS Collection. To effectively meet our goals, the number of participants is limited and people interested in attending must fill out an on-line application form no later than June 11, 2004. In addition, graduate students and postdoctoral fellows applying for travel support must provide a letter of support from their advisor or supervisor. This letter must also be submitted on-line and no later than the June 11, 2004 deadline. For more information on the workshop, please contact Tony Drummond at (510) 486-7624 or Osni Marques at (510) 486-5290. Important Dates to Remember: Proposal submission deadline: June 25, 2004 Proposal review completed and invitations sent: July 2, 2004 Attendee confirmation of participation deadline: July 16, 2004 Travel arrangements completed for all: July 30, 2004 Workshop Dates: August 24-27, 2004 Relevant Links: ACTS Collection information: http://acts.nersc.gov On-line application form: http://acts.nersc.gov/events/Workshop2004/application.html On-line support letter submission: http://acts.nersc.gov/events/Workshop2004/recommendation.html Tony Drummond LBNL - MS 50F 1650 Phone: (510) 486-7624 One Cyclotron Rd FAX: (510) 486-5812 Berkeley, CA 94720 E-mail: LADrummond@lbl.gov ------------------------------------------------------- Date: Thu, 20 May 2004 14:33:03 -0400 (EDT) From: Michele Benzi Subject: ETNA Special Issue on Saddle Point Problems Special issue of ETNA on "Saddle point problems: numerical solution and applications" Dear Colleagues, The journal Electronic Transactions on Numerical Analysis (ETNA) will devote a special issue to the solution of saddle point problems. These problems arise in systems of PDEs with conservation laws (including Stokes and Navier-Stokes equations, incompressible linear elasticity, magnetostatics, etc.), in constrained optimization problems, in generalized least squares problems, and elsewhere. Such problems pervade computational science and engineering, and their efficient numerical solution is of paramount importance. However, to compute accurate solutions to saddle point problems at a reasonable cost has proved difficult. As a consequence, a significant effort has been devoted to define proper formulations, (stabilized) discretizations, and fast solution methods for discretized saddle point problems and their generalizations. The present issue aims to attract papers on the continuous and discrete formulation of saddle point problems in all aspects of computational science, both for specific problems and in general, and on efficient solution techniques for the resulting systems of equations. Papers describing novel applications leading to saddle point problems are also of interest. Manuscripts should be submitted electronically to one of the special issue editors listed below. The deadline for submission of papers is December 15, 2004. All submissions will undergo the standard refereeing process used for regular ETNA papers. The issue is expected to appear by the end of 2005. For more information on ETNA, see the web site http://etna.mcs.kent.edu/ If you have any questions, please contact the editors of the special issue. Michele Benzi (benzi@mathcs.emory.edu) Richard B. Lehoucq (rblehou@sandia.gov) Eric de Sturler (sturler@cs.uiuc.edu) ------------------------------ End of MGNet Digest **************************