[CIG-ALL] CIG Newsletter - November 2019

Fri Nov 8 09:13:43 PST 2019

November 2019                                                                                                Volume 8  Issue 4

Research Highlight
Using Matrix-free, Multigrid Methods in ASPECT for Large Scale Computations
Solving discrete finite element systems rely heavily on the computation of matrix-vector products with sparse matrices. These matrix-vector products tend to dominate the total amount of work required for the average finite element program, and, as these matrices can be quite large and do not fit into the cache of a modern machine, accessing the data from RAM has become a major bottleneck in finite element computations. Instead of computing the entries of and storing a system matrix, matrix-free methods define an operation on a vector as a loop over the cells in the domain, applying small, dense matrices defined locally on the cell, and summing the results over the entire domain. In this way, one replicates the action of a matrix while never actually storing a matrix. These methods show significant gains in the time of a matrix-vector product as compared to traditional matrix-based methods when using degree 2 and higher finite elements ...

Contributed by Thomas Clevenger

full article
 <https://geodynamics.org/cig/news/research-highlights/november-2019/>
CIG @ 2019 Fall AGU

Looking for talks in geodynamics at AGU? Visit our website to see the latest research your CIG colleagues are presenting.  Do not forget to email <mailto:events at geodynamics.org> us your presentation information to increase the visibility of your research.
presentations
 <https://geodynamics.org/cig/events/calendar/agu-2019/2019-agu-abstracts/>
2019 CIG Business Meeting 
CIG will hold its Annual Business Meeting on Wednesday, December 11. The meeting will begin at 12:45p.  Lunch will be available beginning at 12:15p.  Come discuss the findings from this summer's community survey. Results from the 2019 EC and SSC elections and the schedule for the 2020 CIG events will be announced. Check back at our website for location details.
business meeting
 <https://geodynamics.org/cig/events/calendar/agu-2019/2019-cig-business-meeting/>
Governance

Elections
2019 Elections are now open for positions on the Executive and Science Steering Committees.  Candidates for 2 seats on the EC are Bruce Buffet, Claire Currie, and Peter van Keken. Candidates for 2 positions on the SSC are Clint Conrad, Juliane Dannberg, and Scott King. Candidate statements are available online. Contact your member representative to vote. Many thanks to EC members Claire Currie and Frederik Simons and SSC members Brad Aagaard and John Rudge for their contributions to the community and to the Nominations Committee - Carolina Lithgow-Bertelloni, Frederik Simons, and Jolante van Wijk for presenting an excellent slate of candidates.
candidate statements
 <https://geodynamics.org/cig/about/governance/elections/>
CIG Postdoctoral Researchers
Applications are invited for two Postdoctoral Researchers who are interested in joining the CIG team at UC Davis. The positions are expected to contribute to the development and support of numerical modeling codes in geodynamics and towards conducting independent research. We seek proposals for innovative, original, and feasible software engineering and/or software development projects that complement and/or improve our current practices. CIG supports communities in computational science, dynamo, education, long-term tectonics, mantle convection, multiphysics, seismology, and short-term crustal dynamics.  For more information contact Lorraine Hwang: ljhwang at ucdavis.edu <mailto:ljhwang at ucdavis.edu>.
job listing
 <https://recruit.ucdavis.edu/JPF03269>
Events

Joint Canadian Geophysical Union and CIG Meeting
The 2020 annual meeting of the Canadian Geophysical Union (CGU) will be held in Banff, AB, May 3-6. CIG will be partnering again with CGU for this event. The theme of the Meeting, which reflects the full range of the CGU’s scientific interests is Addressing Challenges in Earth and Environmental Sciences, and scientific sessions are being invited for all areas of interest encompassed. These areas include biogeosciences, earth surface processes, geodesy, hydrology, and the solid earth. Proposals for scientific sessions must be submitted by November 22.  Travel support will be available for U.S. based researchers.
More information
 <https://community.geodynamics.org/t/cig-all-cgu-call-for-session-and-workshop-proposals-cgu-annual-meeting-banff-ab-may-3-6-2020/846>
 <https://zoom.us/j/955605274>   
webinars begin @ 2P PT

Webinars

November 14     Richard Styron, GEM Foundation & Earth Analysis, LLC
December          AGU 
January              winter break 
February 13       Christy Till, Arizona State University
March 12           Nicole Gasparini, Tulane University, and                
                          Jane Willenbring, Scripps Institution of Oceanography
April 9                Ved Lekic, University of Maryland
May 7                Brandon Schmandt, University of New Mexico

Links

 <https://community.geodynamics.org/>
Have a question? Start a discussion!

 <https://geodynamics.org/cig/abc>
Citation builder for CIG software.

 <https://geodynamics.org/cig/news/publications-refbase/submit/>
Notify us of your recent publications.
 <https://zoom.us/j/818491291>
 <mailto:contact at geodynamics.org>
 <https://www.youtube.com/user/CIGeodynamics/feed>
 <https://github.com/geodynamics>
Copyright © 2019 Computational Infrastructure for Geodynamics, All rights reserved. 
You are trying out MailChimp! 

Our mailing address is: 
Computational Infrastructure for Geodynamics
One Shields Avenue
UC Davis
Davis, CA  95616

Add us to your address book <https://geodynamics.us12.list-manage.com/vcard?u=618aceadf50a174037a17f5a8&id=f360470027>

Want to change how you receive these emails?
You can update your preferences <https://geodynamics.us12.list-manage.com/profile?u=618aceadf50a174037a17f5a8&id=f360470027&e=> or unsubscribe from this list <https://geodynamics.us12.list-manage.com/unsubscribe?u=618aceadf50a174037a17f5a8&id=f360470027&e=&c=75de7752b3>. 

 <http://www.mailchimp.com/monkey-rewards/?utm_source=freemium_newsletter&utm_medium=email&utm_campaign=monkey_rewards&aid=618aceadf50a174037a17f5a8&afl=1>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.geodynamics.org/pipermail/cig-all/attachments/20191108/e798c086/attachment-0001.html>