[CIG-ALL] CIG News - May 2007
Sue Kientz
sue at geodynamics.org
Fri May 4 15:10:48 PDT 2007
*************************************
CIG News
May 2007
*************************************
Also available at
http://geodynamics.org/cig/proposalsndocs/newsdocs/newsletter-may07
CIG Software Releases
1. CitcomS 2.2.1 - CitcomS is a finite element code designed to solve
thermal convection problems relevant to Earth's mantle. This release
adds the feature of tracking particles, which can be used to infer
the composition field and to compute thermo-chemical convection, or
to define low viscosity wedges/channels in the subduction zones. See
http://geodynamics.org/cig/software/packages/mc/citcoms/ for source
code and manual. You can also run CitComS on the TeraGrid (see http://
geodynamics.org/cig/proposalsndocs/newsdocs/newsletter-dec06#citcoms-
teragrid)
2. Gale 1.2.0 - Gale is a 2D/3D code that solves problems related to
orogenesis, rifting, and subduction with coupling to surface erosion
models. This latest release can simulate shortening, extension, and
subduction models with a variety of boundary conditions in 2D and 3D
in serial or parallel, and scales well on parallel computers. Gale is
a joint effort between CIG, Victorian Partnership for Advanced
Computing (VPAC), and Monash University. See http://geodynamics.org/
cig/software/packages/long/gale/ for binaries, source code, and
manual. Gale is also now available on the TACC TeraGrid site; see
TeraGrid Activities, below.
3. MAG 1.0.2 - MAG is a serial version of a rotating spherical
convection/magnetoconvection/dynamo code that solves the non-
dimensional Boussinesq equations for time-dependent thermal
convection in a rotating spherical shell filled with an electrically
conducting fluid. The latest release includes the Gauss coefficients
as standard MAG output and two new postprocessing idl programs:
magmovCMB.pro and magmovEQ3.pro. The former processes MAG output "mm"
files and displays composite images of Br on the outer spherical
surface in three map views (aitoff, north and south polar), while the
latter creates an array from MAG output "me" files, consisting of
three scalar fields in the equatorial plane as a function of time.
Both procedures can generate movies. See http://geodynamics.org/cig/
software/packages/geodyn/mag/ for source code and manual.
4 .Mineos 1.0.0 - Mineos is used to simulate synthetic seismograms in
1D models of the spherical symmetric nonrotated Earth by normal mode
summation. Attenuation, gravity and transversal anisotropy effects
may be optionally taken into account. The package computes mode
eigenfrequencies and eigenfunctions, Green's functions and synthetic
seismograms for sources with a moment tensor defined in time as a
step-function. Mineos was donated to the community by Guy Masters (UC
San Diego) and Michael Ritzwoller (U. Colorado, Boulder), at which
time it was cleaned up and its documentation assembled and revised by
Misha Barmine (U. Colorado, Boulder). See http://geodynamics.org/cig/
software/packages/seismo/mineos/ for source code and manual.
5. PyLith beta 0.8.2 - PyLith is a finite element code for the
solution of visco-elastic/plastic deformation that was designed for
lithospheric modeling problems. This release offers both tetrahedral
and hexahedral linear elements, the use of traction boundary
conditions, load histories for split nodes, a number of new material
models, including power-law Maxwell and generalized Maxwell (3
Maxwell models in parallel), the use of .cfg files for setting
simulation parameters, much simpler top-level code structure, and
several bug fixes. See http://geodynamics.org/cig/software/packages/
short/pylith/ for source code and manual.
Software Bug Fixes
Ellipsis3d 1.0.2 - Ellipsis3d is a three-dimensional version of the
particle-in-cell finite element code Ellipsis, a solid modeling code
for visco-elastoplastic materials. The particle-in-cell method
combines the strengths of the Lagrangian and Eulerian formulations of
mechanics while bypassing their limitations. This release includes
minor portability fixes. See http://geodynamics.org/cig/software/
packages/mc/ellipsis3d/ for source code and documentation.
TeraGrid Activities
* Gale installed on TACC - Gale is now preinstalled on TeraGrid's
TACC Lonestar. See http://geodynamics.org/cig/software/csa/ for
instructions on how to access the CSA on TeraGrid and for an
application to get a small amount of CPU time from CIG to get you
started.
* CIG seeks to increase community allocations - Hoping to expand its
ability to offer the geodynamics community allocations of time on
TeraGrid, CIG recently submitted a proposal to TeraGrid's Medium
Resource Allocations Committee (MRAC). The proposal requests a more
substantial allocation in order to offer user training at workshops,
to run benchmarks, and to nurture new users who wish to try out CIG
codes before applying for their own allocations. The proposal and
appendix are available at http://geodynamics.org/cig/proposalsndocs/
documents/ .
Science Steering Committee Needs Input for Strategic Plan
The CIG Science Steering Committee (SSC) will meet in May to develop
a new 5-year strategic plan and map out CIG's activities for the
coming year and beyond. The SSC seeks input from the community and
urges you to contact its committee members and express your views as
to what CIG's short-term and long-term goals should be in the various
geodynamics subdisciplines.
* Current CIG Five-year Strategic Plan (Sept. 1, 2006 to Aug. 31,
2011): http://geodynamics.org/cig/proposalsndocs/documents/2006cigplan
* List of CIG's Working Groups: http://geodynamics.org/cig/
workinggroups/
* List of SSC Members and Contact Information: http://geodynamics.org/
cig/people/ssc
Magma Migration Development Initiated
CIG recently approved a proposal to develop a CIG Magma Dynamics
Demonstration Suite (http://geodynamics.org/cig/proposalsndocs/
proposals/MagmaVPACPartnership16Jan07.pdf) as a partnership between
VPAC and the Magma Dynamics working group. The MDWG is currently
comprised of Marc Spiegelman, Ritske Huismans, Garrett Ito, Richard
Katz, Boris Kaus, Laurent Montesi and Ben Phillips, but is always
looking for new members who are interested in helping develop
advanced software for coupled fluid-solid flow. The purpose of the
proposal is to develop a benchmark suite of magma-dynamics problems
culminating in 3D models of mid-ocean ridges with consistent coupled
fluid and solid flow that leverages many of the existing components
of CIG. A more thorough discussion of the magma-dynamics equations
and a systematic set of benchmark problems are available at http://
geodynamics.org/cig/workinggroups/magma/workarea/benchmark/
McKenzieIntroBenchmarks.pdf .
The first stage of this project will be to evaluate currently
available solid flow solvers (e.g., Gale, Citcom) for use in magma
dynamics problems (the critical technical issue will be the accuracy
of dynamic pressure fields). An initial 3D spectral benchmark for 2D
and 3D pressure and solid velocity for simple ridge geometries
(SpecRidge) is available in the CIG software repository in the magma
section (http://geodynamics.org/wsvn/cig/magma/3D/SpecRidge/). For
additional information, contact Marc Spiegelman (mspieg at
ldeo.columbia.edu) or post to the CIG-Magma mailing list (cig-magma
at geodynamics.org).
Upcoming Meetings
* Community Finite Element Models for Fault Systems and Tectonic
Studies 2007 Workshop - The next CFEM workshop will be held from June
25-29, 2007, in Golden, Colorado on the campus of the Colorado School
of Mines. Limited reimbursement is available for all participants,
for a portion of costs incurred. There are no registration fees. See
http://geodynamics.org/cig/workinggroups/short/workshops/cfem-07/ for
announcement and registration form.
* Joint CIG/SPICE/IRIS Computational Seismology Workshop - A joint
workshop between SPICE (Seismic wave Propagation and Imaging in
Complex media: a European network), IRIS (Incorporated Research
Institutions for Seismology), and the CIG Seismology Working Group is
planned for October 9-11th, 2007, in Jackson, NH, at the Eagle
Mountain House. It will be a joint meeting between European and
American Seismologists to discuss current "hot topics": algorithm
development, imaging developments, and the future goals of a united
American-European scientific community. Funding will hopefully be
available to support up to 100 participants who will examine the
current and future possibilities for computational seismology. Stay
tuned for details.
Executive Committee (EC) Updates
* Nominations for New EC Seat Solicited - In December 2006 at the CIG
Business Meeting, representatives of the member institutions voted to
expand the membership of the Executive Committee from four to five. A
detailed description of the duties of the EC can be found in the
recently updated CIG By-Laws: http://geodynamics.org/cig/
proposalsndocs/documents/CIG_By-Laws_Dec_2006.pdf (PDF). E-mail your
nominations, suggestions, and other recommendations to the Nominating
Committee (nominations at geodynamics.org), which consists of Brad
Hager (chair; Massachusetts Institute of Technology), Laurent Montesi
(Woods Hole Oceanographic Institution), and Magali Billen (University
of California, Davis).
* New Software Support Policy Approved - On March 16, the EC
provisionally approved the CIG policy on the levels of software
support for developed and donated software. The policy describes
three levels of support ranging from highest (codes validated,
benchmarks passed, qualified as "state-of-the-art" in one or more
areas of geodynamics) to lowest (CIG provides links to the software
but no resources for development, maintenance, or support). See
http://geodynamics.org/cig/software/policy/support for full details.
*************************************
Who to contact
CIG Administration, contracts, travel, etc.:
Ariel Shoresh, (626) 395-1699
ariel at geodynamics.org
Equation solvers (PETSc) & PyLith development:
Matt Knepley, knepley at mcs.anl.gov
SVN software repository & GALE development:
Walter Landry, (626) 395-4621
walter at geodynamics.org
Benchmark problems, visualization & CitCom:
Luis Armendariz, (626) 395-1695
luis at geodynamics.org
Build procedure & computational seismology:
Leif Strand, (626) 395-1697
leif at geodynamics.org
Mantle convection codes and benchmarks:
Eh Tan, (626) 395-1693,
tan2 at geodynamics.org
Web site and user manuals:
Sue Kientz, (626) 395-1694
sue at geodynamics.org
Geodynamo and systems administration:
Wei Mi, (626) 395-1692
wei at geodynamics.org
Software architecture & Pyre framework:
Michael Aivazis, (626) 395-1696
aivazis at caltech.edu
Administration:
Mike Gurnis, (626) 395-1698
gurnis at caltech.edu
Science Steering Committee: contact Chairman
Peter Olson (Johns Hopkins),
olson at jhu.edu
Executive Committee: contact Chairman
Mark Richards (Berkeley),
markr at seismo.berkeley.edu
--
Sue Kientz
Technical Writer/Web Manager
Computational Infrastructure of Geodynamics (CIG)
http://www.geodynamics.org/
sue at geodynamics.org
ofc: (626) 395-1694
~Metaphors Be With You~
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://geodynamics.org/pipermail/cig-all/attachments/20070504/53a883e5/attachment.html
More information about the CIG-ALL
mailing list