From bangerth at colostate.edu Thu Jun 11 07:23:30 2020 From: bangerth at colostate.edu (Wolfgang Bangerth) Date: Thu, 11 Jun 2020 08:23:30 -0600 Subject: [CIG-ALL] deal.II 9.2 released Message-ID: <54f464f0-2cdb-061b-d5a2-0c2cd82350d8@colostate.edu> Version 9.2.0 of deal.II, the object-oriented finite element library awarded the J. H. Wilkinson Prize for Numerical Software, has been released. It is available for free under an Open Source license from the deal.II homepage at https://www.dealii.org/ The major changes of this release are: - Seven new tutorial programs: step-47 solves the biharmonic equation; step-50 demonstrates algebraic and geometric multigrid methods for large, parallel computations on adaptively refined meshes, and compares matrix-based and matrix-free implementations; step-58 solves the nonlinear Schroedinger equation; step-65 illustrates working with complex geometries and curved domains; step-67 and step-69 implementing different approaches for the Euler equations in compressible gas dynamics; step-70 illustrates flow around a moving obstacle. - Substantial improvements to the Python interfaces, including Jupyter versions of the step-49 and step-53 tutorial program. - A new triangulation class (parallel::fullydistributed::Triangulation) that completely distributes a triangulation, rather than keeping the coarse mesh available on all processors. - The DataOut and related classes now fully support outputting complex-valued solution vectors, including complex-valued vector and tensor fields. - A number of fixes throughout the library for problems with more than 2^32 (=4 billion) unknowns. - Improvements to the support for particle based methods as well as to parallel hp-adaptive finite element methods. - More than 320 other new features, improvements, and bugfixes. For more information see: - The preprint at https://www.dealii.org/deal92-preprint.pdf - The list of changes at https://www.dealii.org/developer/doxygen/deal.II/changes_between_9_1_1_and_9_2_0.html The main features of deal.II are: - Extensive documentation and 66 fully-functional example programs - Support for dimension-independent programming - Locally refined adaptive meshes - Multigrid support - A zoo of different finite elements - Fast linear algebra - Built-in support for shared memory and distributed parallel computing, scaling from laptops to clusters with 100,000+ processor cores - Interfaces to Trilinos, PETSc, METIS, UMFPACK and other external software - Output for a wide variety of visualization platforms. The deal.II developer team and many contributors. -- ------------------------------------------------------------------------ Wolfgang Bangerth email: bangerth at colostate.edu www: http://www.math.colostate.edu/~bangerth/ From ljhwang at ucdavis.edu Fri Jun 19 09:02:20 2020 From: ljhwang at ucdavis.edu (Lorraine Hwang) Date: Fri, 19 Jun 2020 09:02:20 -0700 Subject: [CIG-ALL] 2020 TACC Institute Series Message-ID: Hello! Registration is open for the TACC Summer Institutes. The TACC Institute Series offers attendees an intense, immersive training in advanced computation from our onsite experts. Topics include developing parallel applications for modern high performance computers, visualizing and analyzing large data sets, machine learning and deep learning techniques for diving into your datasets, and developing and executing reproducible experiments in the cloud. The TACC Institutes Series focuses on administering leadership-class advanced computing systems, and helping organizations understand the many considerations to weigh when purchasing and operating advanced computing resources. This is also an excellent opportunity to network with TACC research staff, our affiliates, and other attendees. TACC has decided to host all of our summer institutes online. During our discussions on how to effectively host our institutes via webcast and still keep the TACC look and feel, we’ve expanded the institute schedule with interactive training sessions and presentations offered throughout the summer months, each related to specific institute track. As such, we've adjusted the price accordingly. For those who have already registered, a price adjustment will be made to your registration fee when registration closes. The upcoming scheduled institutes are: July 2020: Computational Research Techniques This will be run in 3 parallel tracks throughout the month of June with some crossover. Registering for one track allows you to attend sessions from other tracks of this series as well. Applied Parallel Programming Learn from TACC's high performance computing experts how to code parallel applications using OpenMP and MPI, profile and optimize sequential and parallel applications, debug parallel software, and develop software for many-core architectures, and more. Scientific Visualization TACC's visualization experts will provide instruction on how to generate rich, informative visualizations from your simulation results and data sets. Get started with VisIt and Paraview among other technologies, to learn the basics of developing interesting and worthwhile geographic and information visualizations. Reproducible Science Learn about the tools necessary to build more complex workflows and techniques to ensure your runtime environment is reproducible and flexible. Use virtual machines and containers to develop and execute scientific workflows in the cloud with the ability to expand to large-scale systems. August 2020: Machine Learning in cooperation with Intel Use machine learning and deep learning techniques to improve insights into your data. Spend a week with TACC's data analysis experts learning about the latest tools and techniques for analyzing and processing your Big Data problems. And see how Machine Learning and Deep Learning fits into your discovery workflow. Attendees to TACC Institutes will receive a certificate of attendance with their name, the title of the institute and the dates of the program. You can register for the institutes we have scheduled following this link: TACC Summer 2020 Institutes . This summer we're also offering a fellowship program to help students cover costs associated with registration for our institutes. If you are interested in applying, please fill out this fellowship survey . If you have any questions, email us at ssi at tacc.utexas.edu . Thank you for your time and hope to see you this Summer! Charlie Dey Director of Training and Professional Development Chris Hempel Texas Advanced Computing Center, 10100 Burnet Road, Building 196 (R8700), Austin, TX 78758 Unsubscribe Best, -Lorraine ***************************** Lorraine Hwang, Ph.D. - Director Computational Infrastructure for Geodynamics UC Davis 530.752.3656 geodynamics.org -------------- next part -------------- An HTML attachment was scrubbed... URL: From dstamps at vt.edu Sat Jun 20 10:18:09 2020 From: dstamps at vt.edu (D. Sarah Stamps) Date: Sat, 20 Jun 2020 13:18:09 -0400 Subject: [CIG-ALL] AGU session: Where is the melt during the evolution of continental rifting? Message-ID: Dear colleagues, For those of you interested in the evolution of rifting and the role of melt, please consider submitting an abstract to the following session at AGU (submissions open near the end of June): Session Title: Where is the melt during the evolution of continental rifting? Session Description: Continental rupture requires weakening mechanisms to overcome lithospheric strength. Magma is one factor that can play a critical role in accommodating strain partitioning during continental rifting. Ample evidence supports that melt weakens the lithosphere in magma-rich rift systems, such as in Iceland and the Main Ethiopian Rift in East Africa. In addition, the potential role of deep crustal and/or mantle melt in magma-poor rifts may also be important. Geochemical, seismic, magnetotelluric, and gravity data have shed some light on the locations of magma at depth in continental rifts, and geodynamic modeling helps isolate the distribution of melt. In this session, we welcome submissions focused on advancing our understanding of the role of, causes of, and locations of melt at depth during continental rifting. Both evidence-based and geodynamic modeling studies are encouraged that may address continental rifting at any phase of development. Session Proposal #101051 Best, D. Sarah Stamps, Virginia Tech Emmanuel Njinju, Virginia Tech Micah Mayle, Colorado State University Dennis Lee Harry, Colorado State University Session conveners ____________________ D. Sarah Stamps, PhD Assistant Professor Geodesy and Tectonophysics Laboratory dstamps at vt.edu www.geodesy.geos.vt.edu Virginia Tech Department of Geosciences 926 West Campus Drive (MC0420) 4044 Derring Hall Blacksburg, VA 24061 USA (540) 231-3651 -------------- next part -------------- An HTML attachment was scrubbed... URL: From rene.gassmoeller at mailbox.org Tue Jun 30 19:03:19 2020 From: rene.gassmoeller at mailbox.org (Rene Gassmoeller) Date: Tue, 30 Jun 2020 22:03:19 -0400 Subject: [CIG-ALL] ASPECT 2.2.0 released Message-ID: <4e0682fd-cb4b-fa0c-c323-db97afa9d626@mailbox.org> We are pleased to announce the release of ASPECT 2.2.0. ASPECT is the Advanced Solver for Problems in Earth's ConvecTion. It uses modern numerical methods such as adaptive mesh refinement, multigrid, and a modular software design to provide a fast, flexible, and extensible mantle convection solver. ASPECT is available from                    https://aspect.geodynamics.org/ and the release is available from         https://geodynamics.org/cig/software/aspect/ and         https://github.com/geodynamics/aspect/releases/tag/v2.2.0 This release includes the following significant changes: - New: There is a new matrix-free Stokes solver which uses geometric multigrid.   This method is significantly faster than the default algebraic multigrid   preconditioner and uses less memory. Free surface and melt transport are not   yet implemented.   (Thomas C. Clevenger, Timo Heister) - New: There is now a new approximation for the compressible convection   models that is called 'projected density field'.   (Rene Gassmoeller, Juliane Dannberg, Timo Heister, Wolfgang Bangerth) - Changed: The Geodynamic World Builder has been updated to version 0.3.0.   (Menno Fraters) - Changed: ASPECT now requires deal.II version 9.0.0 or newer.   (Timo Heister, Rene Gassmoeller) - New: There is a new, alternative stabilization method for the advection equation   called SUPG.   (Thomas C. Clevenger, Rene Gassmoeller, Timo Heister, Ryan Grove) - Changed: The entropy viscosity method for stabilizing the advection equations   was substantially improved leading to less artificial diffusion in particular   close to boundaries.   (Rene Gassmoeller) - New: The 'visco plastic' material model now has an option to simulate   viscoelastic-plastic deformation. The 'viscoelastic plastic' material   model has been superseded and removed.   (John Naliboff, Dan Sandiford) - New: The "Free surface" functionality has been generalized and is now part of   "Mesh deformation". This change is incompatible to old parameter files that   used the free surface.   (Rene Gassmoeller, Anne Glerum, Derek Neuharth, Marine Lasbleis) - New benchmarks: entropy equation, viscoelastic cantilever, bouyancy-driven   viscoelastic plate stress, advection in annulus, slab detachment benchmark,   several advection benchmarks, rigid shear, polydiapirs, surface loading.   (Wolfgang Bangerth, Fiona Clerc, Juliane Dannberg, Daniel Douglas, Rene   Gassmoeller, Timo Heister, Garrett Ito, Harsha Lokavarapu, John Naliboff,   Elbridge G. Puckett, Cedric Thieulot) - Incompatibility: The option to use PETSc for linear algebra has been removed   until further notice.   (Timo Heister) - New: If the user has the libdap libraries installed then input data can be   pulled from the server instead of a local file.   (Kodi Neumiller, Sarah Stamps, Emmanuel Njinju, James Gallagher) - New: Implement the "no Advection, single Stokes" and   "single Advection, iterated Newton Stokes" solver schemes.   (Timo Heister, Anne Glerum) - New: The chunk geometry model can now incorporate initial   topography from an ascii data file.   (Anne Glerum) - New: The 'depth average' postprocessor now additionally computes the laterally   averaged density of vertical mass flux for each depth slice in the model.   (Rene Gassmoeller) - Changed: The gravity point values postprocessor has been significantly extended.   (Ludovic Jeanniot, Cedric Thieulot) - New: There is now a general class   `MaterialModel::Utilities::PhaseFunction` that can be used to model   phase transitions using a smooth phase function.   (Rene Gassmoeller, John Naliboff, Haoyuan Li) - New: ASPECT now includes a thermodynamically self-consistent compressible   material model, that implements the Modified Tait equation of state that is   described in Holland and Powell, 2011.   (Bob Myhill) - New: The material models can now outsource the computation of the viscosity   into a separate rheology model.   (Rene Gassmoeller) - New: ASPECT now includes initial temperature and initial composition plugins   that use ASCII data files to define the initial temperature or composition   at a series of layer boundaries.   (Sophie Coulson, Anne Glerum, Bob Myhill) - New: Extended spherical shell geometry model to include custom mesh schemes.   (Ludovic Jeanniot, Marie Kajan, Wolfgang Bangerth) - New: There is a new termination criterion that cancels the model run   when a steady state average temperature is reached.   (Rene Gassmoeller, Juliane Dannberg, Eva Bredow) - Bug fixes to : parallel hdf5 output, chunk geometry model, initial   topography modules, gplates boundary velocity plugin.   (many authors) A complete list of changes and their contributing authors can be found at   https://aspect.geodynamics.org/doc/doxygen/changes_between_2_81_80_and_2_82_80.html Wolfgang Bangerth, Juliane Dannberg, Rene Gassmoeller, Timo Heister, Jacqueline Austermann, Menno Fraters, Anne Glerum, John Naliboff, and many other contributors.