A-Z Index | Phone Book | Careers

InTheLoop | 07.13.2015

July 13, 2015

Intel’s Genevieve Bell to Give CS Distinguished Lecture Friday, July 17

Dr. Genevieve Bell, a noted anthropologist and Intel Fellow in the Corporate Strategy Office at Intel, will be the next speaker in the Computing Sciences Distinguished Lecture Series. Bell will give her talk at 10:30 a.m. Friday, July 17, in the Bldg. 50 Auditorium. At Intel, Bell leads an R&D team of social scientists, interaction designers and human factors engineers to drive consumer-centric product innovation in Intel's consumer electronics business.

Her talk "Making Life: The Art & Science of Robots" will explore different narratives about making life, specifically those that revolve around technology. Bell will focus on stories involving robots and artificial intelligence which have become a flashpoint and a source of social anxieties for some time. Her talk attempts to locate robots in a larger set of cultural, historical and scientific conversations. When it first appeared in English, the word robot had immediate and global resonance in no small part because it became the place where centuries of literary and technical activities collided. »Read more.

If You're Interested in Attending SC15 the Approval Deadline is COB Today

If you are interested in attending SC15 this November 15 -20 in Austin, Texas? Fill out this form before close of business today to get your name on the Conference Services approval list. »Read more.

Project Jupyter Gets $6M to Expand Collaborative Data Science Software

Three foundations pledged $6 million over the next three years to Project Jupyter, an open-source software project that supports scientific computing and data science across a wide range of programming languages via a large, public, open and inclusive community. Fernando Perez of CRD's Usable Software Systems Group will lead the effort at UC Berkeley and Berkeley Lab. His colleague Brian Granger will lead the effort at California Polytechnic University, San Luis Obispo.

Perez and Granger’s efforts with Project Jupyter are the result of their work developing IPython, a popular user interface for interactive computing across multiple programming languages. With this award from the Leona M. and Harry B. Helmsley Charitable Trust, Alfred P. Sloan Foundation, and Gordon and Betty Moore Foundation, these researchers will expand and improve the capabilities of the Jupyter Notebook, a web-based platform that allows scientists, researchers and educators to combine live code, equations, narrative text and rich media into a single, interactive document. »Read more

Lab Contributes to ASCR Report on Machine Learning Workshop

In January, DOE’s Office of Advanced Scientific Computing Research sponsored a workshop on Machine Learning for Extreme Scale Computing and the final report is now on line. Prabhat, leader of NERSC’s Data and Analytics Services Group helped organize the workshop and was responsible for Topic 2 on “Machine Learning for Big Data.” Prabhat also collated requirements from various science drivers in DOE, and methods and approaches. Steven Hofmeyr of CRD also participated in the workshop. Jon Bashor of CS Communications provided proofreading and editing support for the workshop report and worked with the lab’s Creative Services to create the final formatted version. »Read more.

More Data, No Problem

In the Symmetry Magazine feature "More Data, No Problem," reporter Katie Elyce Jones writes that the Energy Sciences Network's (ESnet's) increased bandwidth of the transatlantic network that connects US CMS and ATLAS Tier-1 centers to Europe will be vital to handle the increased data of the current run of the Large Hadron Collider (LHC). Scientists estimate the current run of the LHC could create up to 10 times more data than the first one. CERN already routinely stores 6 gigabytes (or 6 billion units of digital information) per second, up from 1 gigabyte per second in the first run. »Read more.

1988 Gordon Bell Prize Creates Foundation Horst Simon's for Successful HPC Career

A blog posted on the Supercomputing Conference's website shines a spotlight on Berkeley Lab Deputy Director Horst Simon's two Gordon Bell Prizes (1988 and 2009) and how these accolades help set the foundation for his successful career in high performance computing. The prizes endowed by Gordon Bell, who rose to fame as a computer designer for Digital Equipment Corp., are highly valued by the scientists whose scientific applications push the sustained performance of leading edge supercomputers. The awarding of each year’s prizes are a highlight of the SC conference held every November. »Read more.

The Rise and Fall of Core Collapse Supernovae

Despite decades of supernovae research, understanding the explosion mechanisms of these massive stars remains among the great challenges of astrophysics—in part because of the complexity of the computations involved. But each new generation of supercomputers enhances our ability to tease apart the physics of the neutrinos produced in the neutron star that is born during a supernova explosion.

In a study published in AIP Advances, a team of researchers compared 2D models run at NERSC with 3D models run at Oak Ridge National Laboratory to shed new light on the explosion mechanism in core-collapse supernovae. Being able to compare the 2D and 3D images allowed the researchers to better identify trends in the explosion energy and to realize that previous core-collapse models overestimated the speed of the explosion process. »Read more.

ESnet, Internet2, NITRD Holding 3-Day Roadmap to Operational SDN Workshop

This week ESnet is hosting a three-day workshop to develop a “Roadmap to Operational Software Defined Networking based networks,” with participants from other research and education networks, universities, government agencies, international networks and networking equipment vendors. Software defined networking, or SDN, is an approach that allows network administrators to manage network services by decoupling various levels of network functionality, enabling more flexibility in moving data and meeting application requirements.

The July 14-16 workshop at Berkeley Lab will include short presentations on the “state of the union” of various SDN deployments at universities, networks and national labs, as well as at ESnet. After a day-and-a-half of presentations, attendees will form breakout groups to assess how can the community work with the open source software community and vendors to tackle the SDN operational gaps and to develop a roadmap to SDN deployments. The third day of the workshop will focus on security related issues to SDN.

Organized by ESnet, Internet2, DOE, the National Science Foundation and the Networking and Information Technology Research and Development (NITRD) Program, the workshop is expected to draw 70 attendees in person. Those not attending can access the workshop via Zoom at https://go.zoom.us/join, and joining # 510 486-4100.

This Week's CS Seminars

»CS Seminars Calendar

Numerical Linear Algebra for Image Analysis Applications

Tuesday, July 14, 2015, 9:30 - 10:30am
Location: Bldg. 50F, Room 1647
Anna Matsekh, Los Alamos National Lab

This talk will address the numerical challenges involved in the solution of the spectral graph partitioning problem for satellite image segmentation. Matsekh will demonstrate that classical Fiedler-eigenvector-based solutions do not always deliver desirable segmentation due to the effects of rounding errors and argue that a low-dimensional eigenvector subspace corresponding to a few of the lowest-in-magnitude eigenvalues should be used instead. She will also present her work on the analysis of a family of covariance-based anomalous change detection (ACHD) methods that are often used in hyper-spectral image analysis.

CS Summer Student Talk Series

Designing and Presenting a Science Poster

Thursday, July 16 2015, 11:00 a.m.
Location: 50F-1647, OSF Video Conference: 943-254
Jonathan Carter, Computing Sciences and Deputy Director

During the poster session on August 6th, members of our summer visitorprogram will get to showcase the work they have been doing this summer. This talk will cover the basics of poster presentation: designing an attractive format; how to present your information clearly; what to include and what not to include. Presenting a poster is different from writing a report or giving a presentation. This talk will cover the differences, and suggest ways to avoid common pitfalls.

Hessian-free techniques for applications in quantum chemistry

Thursday, July 16 2015, 1:00–2:00 p.m., 50B-Room 2222
Shaama Sharada, University of California, Berkeley

Iterative diagonalization schemes such as the Davidson method are commonly used to calculate desired eigenvalues in situations where full matrix diagonalization is prohibitive, such as the configurational interaction (CI) treatment of wavefunctions. More recently, iterative diagonalization is being exploited in situations where the matrix computation itself is expensive. Sharada's work is focused on developing a gradient-based finite differences Davidson method as an alternative to calculation of the matrix of second derivatives of the energy (hessian). This approach can significantly lower costs as well as automate the process of search and characterization of reaction transition states on potential energy surfaces, particularly when systems are large and full hessians are intractable but almost always necessary. Sharada and her colleagues have also extended the hessian-free approach to wave-function space in order to examine the stability of self-consistent field solutions with respect to orbital spin symmetry constraints, by calculating the lowest eigenvalue of the electronic hessian. This is not only an inexpensive stability analysis technique for density functionals that do not have analytical expressions available for the hessian, but is also a practical tool to examine dissociation behavior of spin restricted and unrestricted solutions for orbital-optimized post-Hartree Fock methods.