HomeCSE Seminars
CSE Seminars
High Performance Computing with Discontinuous Galerkin
Date: Wednesday, July 15, 2009
Time: 9:30am - 10:30am
Location: LBNL Bldg. 943, Room 236 and Bldg. 50B, Room 2222
Speaker:
Alex TenEyck
Stanford University
Abstract:
Discontinuous Galerkin is the most actively researched finite element
method within the field of computational mechanics. It initially
attracted attention for high performance computing due to its naturally
parallelizable implementation. During my PhD at Stanford, I developed a
Data Migration between Distributed Repositories for Collaborative Research
Date: Wednesday, June 27, 2009
Time: 2:00pm - 3:00pm
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Mehmet Balman
Department of Computer Science
Louisiana State University
Abstract:
Scientific applications especially in several areas such as physics,
biology, and astronomy have become more complex and compute
intensive. Often, such applications require geographically
distributed resources to satisfy their immense computational
Optimizing DDA Code on a Power5 Processor
Date: Monday, June 8, 2009
Time: 10:30am - 11:30am
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Adam Jundt
Center for Computation and Technology
Louisana State University
Abstract:
This talk presents an implementation of the Discrete Dipole
Approximation method used for computationally simulating the light
scattering effects of atmospheric particles, and the results of
optimizing the code to run on an IBM Power5 processor. The original
Parallel computing in Python: tools and ideas for interactive workflows
Time: 1:00pm - 2:00pm
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Fernando Perez
Helen Wills Neuroscience Institute
University of California, Berkeley
Abstract:
The Python programming language has established itself as the
leading open source tool for high-level scientific computing.
Collecting Trace Data for HPC Applications
Date:Wednesday, May 27, 2009
Time:1:00pm - 2:00pm
Location/:LBNL Bldg. 50F, Room 1647
Speaker:
Noel Keen
Computational Research Division
Lawrence Berkeley National Laboratory
Abstract:
By intercepting calls to the system LIBC library, trace data was
collected, specifically I/O and memory allocation operations.
Functionality was extended to allow IPM (light-weight MPI profiling
tool) to
treat these intercepted LIBC calls in much the same way that IPM
handles
Extracting multiscale Information from Time Series Characterizing Single-molecule Systems under the Influence of Time Dependent External Forces
Date:Friday, May 29, 2009
Time:10:30am - 11:30am
Location:Bldg. 50B, Room 4205
Speaker:
Christopher Calderon
Department of Computational and Applied Mathematics
Rice University
Abstract:
Single-molecule experiments and computer simulations have generated
data sets containing useful information about the dynamics of
complex biomolecules. However the many degrees of freedom present,
time dependent external forces, and multiple time-scale fluctuations
CernVM and VML - Virtualization for Scientific Computing
Date: Friday, May 22, 2009
Time:10:00am - 11:00am
Location/: LBNL Bldg. 50B, Room 2222
Speaker:
Yushu Yao
Physics Division
Lawrence Berkeley National Laboratory
Abstract:
ATLAS is a High Energy Physics project that has a large calibration
involving thousands of physicists and developers. ATLAS software
development and data analysis has been mostly based on remotely
logging into Linux clusters. The fast rise of virtualization
Youth Online: Designing for Participation and Collaboration
Date: Friday, May 22, 2009
Time: 1:00pm - 2:00pm
Location:LBNL Bldg. 50F, Room 1647
Speaker:
Andrés Monroy-Hernández
MIT Media Lab
Abstract:
The Scratch Online Community is a website that allows kids and
novices from around the world to learn how to program and share
their own interactive media. In two years, more than 400,000 Scratch
projects, ranging from video games to animated stories to science
Botnets: The Rising Internet Threat and New Detection Techniques
Date: Wednesday, May 20, 2009
Time: 2:00pm - 3:00pm
Location:LBNL Bldg. 50A, Room 5132
Speaker:
Guofei Gu
Texas A&M University
Abstract:
Most of the attacks and fraudulent activities on the Internet are
carried by malware. In particular, botnets have become the primary
"platforms" for attacks on the Internet. A botnet is a network of
compromised computers (or, bots) that are under the control of an
Efficient temporal blocking for stencil computations by multicore-aware wavefront parallelization
Date: Friday, May 15, 2009
Time: 11:00am - 12:00pm
Location:LBNL Bldg. 50A, Room 5132
Speaker:
Dr. Gerhard Wellein
Regionales Rechenzentrum Erlangen, Germany
Abstract:
We present a pipelined wavefront parallelization approach for stencil-based computations. Within a fixed spatial
domain successive wavefronts are executed by threads scheduled to a multicore processor chip with a shared outer
level cache. By re-using data from cache in the successive wavefronts this multicore-aware parallelization strategy
Modeling and Characterizing the Performance of Scientific Applications on High-End Computing Resources
Date: Tuesday, May 12, 2009
Time: 1:00pm - 2:00pm
Location: LBNL Bldg. 50A, Room 5132
Speaker:
Nick Wright
San Diego Supercomputer Center
University California, San Diego
Abstract:
In this talk we present some of our recent work on performance
modeling and characterization of scientific applications. We describe
issues related to building simple performance models, our efforts to
measure and understand performance variability, and our experiences
procuring future machines.
Clustering Methods in Geometric Modeling and Scientific Visualization
Date: Wednesday, May 6, 2009
Time: 4:00pm - 5:00pm
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Professor Hans Hagen
Department of Computer Science
University of Kaiserslautern, Germany
Abstract:
Clustering and classification of datasets is an important problem in
many application fields, most often to be solved in order to
determine specific regions of interest. In Geometric Modeling and
Scientific Visualization, clustering methods based on generalized
Tensor Clustering and Error Bounds
Date: Monday, May 4, 2009
Time: 3:00pm - 4:00pm
Location:LBNL Bldg. 50F, Room 1647
Speaker:
Chris Ding
Department of Computer Science & Engineering
University of Texas at Arlington
Abstract:
Tensor decompositions become increasingly important in analyzing
high-dimensional and multi-index data, such as the wind velocity
distribution on longitude, latitude, vertical coordinates over time.
So far, tensor decompositions are mainly used for dimension
Toward Peta-scale Computing Environment and Cyber Science nfrastructure - Beyond NAREGI Project
Date: Monday, May 4, 2009
Time: 1:00pm - 2:00pm
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Kenichi Miura
Center for Grid Research and Development
National Institute of Informatics
Tokyo, Japan
Abstract:
The National Research Grid Initiative (NAREGI) Project was a
research and development on the grid middleware from FY2003 to
FY2007 under the auspices of the Ministry of Education, Culture,
Sports, Science and Technology (MEXT). Now we are in the phase of
Systematic Approaches to Forensic Analysis, Information Disclosure, and Auditing Elections
Date: Friday, May 1, 2009
Time: 11:30am - 12:30pm
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Sean Peisert
Department of Computer Science
University of California, Davis
Abstract:
Many scenarios exist where risk and trust, and security and
usability, are in conflict and cannot be resolved using traditional
protection matrices. In such cases, tightening security can make a
system less usable for legitimate users, or potentially even less
An Adaptive Cut-Cell Method for Incompressible Flows
Date: Thursday, April 23, 2009
Time: 10:00am - 11:00am
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Dr. Michael F. Barad, P.E.
Environmental Fluid Mechanics Laboratory
Stanford University
Abstract:
I will present our cut-cell block-structured adaptive mesh
refinement (AMR) computational fluid dynamics model and its
application to the study of highly nonlinear multiscale
environmental flows. The model is based on the solution of the
Preparing for 227 CPUs: The Why and How of porting a new operating system to the IBM Blue Gene /L and /P supercomputers
ScalaTrace: Scalable Compression and Timed Replay of Communication Traces
Date:Wednesday, April 15, 2009
Time:11:00am - 12:00pm
Location: LBNL Bldg. 50F, Room 1647
Speaker:
Frank Mueller
Department of Computer Science
North Carolina State University
Abstract:
Characterizing the communication behavior of large-scale
applications is a difficult and costly task due to code/system
complexity and their long execution times. An alternative to running
Implementing Quantum Gates using the Heisenberg Ferromagnetic Quantum Spin Chain
Date:Monday, April 13, 2009
Time:10:30am - 11:30am
Location: LNBL Bldg. 50F, Room 1647
Speaker:
Jaideep Mulherkar
Department of Mathematics
University of California, Davis
Abstract:
Quantum spin systems are a natural model for quantum computation. I
will introduce the ferromagnetic Heisenberg XXZ quantum spin model
with kink boundary conditions and will talk about an interesting new
Numerical Solutions of Eigenvalue Problems with Spectral Transformations
Date:Friday, April 10, 2009
Time:10:30am - 11:30am
Location: LNBL Bldg. 50B, Room 2222
Speaker:
Fei Xue
Department of Mathematics
University of Maryland
Abstract:
This talk concerns numerical algorithms for solving eigenvalue
problems, with emphasis on efficient iterative solution of the
The Development of a Dissipation Transport Equation and its Application to Particle Laden Turbulent Channel Flows
Date: Tuesday, March 24, 2009
Time: 10:00am - 11:00am
Location: LBNL bldg. 50A, Room 5132
Speaker:
John Schwarzkopf
Washington State University
Abstract:
Particle laden turbulent flows are commonly found in combustion,
atmospheric flows and industrial applications. This presentation
will focus on the development of a volume averaged dissipation
equation to aid in modeling the carrier phase turbulence in particle
laden flows. By volume averaging, an additional production of
Engineering Analysis via Distance Sampling
Date:Friday, March 20, 2009
Time:2:00pm - 3:00pm
Location:LBNL Bldg. 50B, Room 4205
Speaker:
Vadim Shapiro
Departments of Mechanical Engineering and Computer Sciences
University of Wisconsin-Madison
Abstract:
Dramatic advances in sensing technology, computing power, and
special purpose hardware point to a new era in geometric modeling
where point clouds and sampling increasingly dominate many
Zero-Emission Datacenters: Concept and First Steps
Date: Monday, March 16, 2009
Time: 10:30am - 11:30am
Location: LBNL Bldg. 54, Room 130 (Pers Hall Conference Room)
Developing a Comprehensive Set of Tools for Large-Scale Environmental Science Data Analysis
Time: 2:00pm - 3:00pm
Location: LBNL Bldg. 50F, Room 1647
Speakers:
Nandita Prabhu, Samir Selman, Vlad Andrei
Stanford University
Accelerating Astrophysical Particle Simulations with Programmable Hardware (FPGA and GPU)
Date:Tuesday, March 10, 2009
Time:11:00am - 12:00pm
Location: LBNL Bldg. 50A, Room 5132
Speaker:
Rainer Spurzem
ARI-ZAH
University of Heidelberg, Germany
Abstract:
The implementation of N-Body and SPH codes on new types of accelerator
hardware (field programmable gate arrays, FPGA, and graphical processing
units, GPU) is presented. Our present main astrophysical applications
The Fraunhofer Cell Cluster and Seismic Imaging
Date: Friday, March 6, 2009
Time: 11:00am - 12:00pm
Location: LBNL Bldg. 50A, Room 5132
Speaker:
Franz Josef Pfreundt
Fraunhofer ITWM, Germany
Abstract:
The high performance of the Cell B.E. for 32 bit applications made the
Cell an attractive system for seismic imaging codes. The Fraunhofer Cell
Cluster consisting of 70 QS22 blades is mainly used in this field. The
talk will give an overview of achieved and expected results for various
How Big is the Big Picture?
Date: March 4
Time: 11:00-12:00pm
Location: 380 Soda Hall
Speaker: Andrew Mullhaupt
Abstract: Finance is a rapidly evolving subject, most practitioners come into contact with a small area. It turns out to be an important question, for portfolio managers and risk managers, how large the field is. Recent events have exposed strong connections between branches of finance often previously regarded as unrelated. We illustrate this with old and new mathematics.
A Method of Adaptive Coarsening for Compressing Numerical Data
Date:Friday, March 6, 2009
Time: 1:00pm - 2:00pm
Location: LBNL bldg. 50A, Room 5132
Speaker:
Scott B. Baden
Department of Computer Science & Engineering
University of California, San Diego
Abstract
A challenge in large scale computing is how to compress simulation
data without losing valuable information. While wavelet based
Real-time Classification of Massive Datastreams
Date: Wednesday, February 25, 2009
Time: 2:00pm - 3:00pm
Location: Bldg. 50B, Room 4205
Speaker:
Josh Bloom
Department of Astronomy
University of California - Berkeley
Abstract:
The streaming of digital data at unprecedented rates presents unique
challenges to existing machine-learning classification schemes. The very
nature of the astrophysical phenomena of interest -- time-variable
Interactive Comparison of Scalar Fields
Date: Friday, February 27, 2009
Time: 11:00am - 12:00pm
Location: Bldg. 50F, Room 1647
Speaker:
Hamish Carr
University College Dublin, Ireland
Abstract:
Understanding fluid flow data, especially vortices, is still a
challenging task. Sophisticated visualization tools help to gain
Towards Seamless and High-Productive Parallel Programming Environment
Date: Tuesday, February 24, 2009
Time: 2:00pm - 3:00pm
Location: Bldg. 50F, Room 1647
Speaker:
Yutaka Ishikawa
Department of Computer Science/Information Technology Center
University of Tokyo, Japan
Abstract:
University of Tokyo, University of Tsukuba, and Kyoto University
conducts the seamless and highly-productive parallel programming
environment for high-performance computing project to realize a new
An Eigenvalue Solver Using Contour Integration for Linear/Nonlinear Eigenvalue Problems
Date:Thursday, February 19, 2009
Time:1:00pm - 2:00pm
Location:Bldg. 50F, Room 1647
Speaker:
Tetsuya Sakurai
Department of Computer Science
University of Tsukuba, Japan
Abstract:
In this talk, we present a method for solving linear and nonlinear
eigenvalue problems using contour integration. First, we talk about
the case for generalized eigenvalue problems (GEPs). The major
Spectral Methods for Non-Rigid Shape Analysis
Date: Friday, February 6, 2009
Time: 3:30pm - 4:30pm
Location: Bldg. 50F, Room 1647
Speaker:
Martin Reuter
Athinoula A. Martinos Center for Biomedical Imaging
Harvard Medical School
Abstract:
Complex geometric objects have gained much importance in many
different application fields such as medicine, computer aided design
or engineering. Modern sensor technologies produce large amounts of
Sociological Aspects of Developing Information Infrastructures for Science
Date: Thursday, February 5, 2009
Time: 11:00am - 12:00pm
Location: Bldg. 50F, Room 1647
Speaker
Charlotte P. Lee
Department of Technical Communication
University of Washington
Abstract:
Distributed enterprises supported by advanced technological
infrastructures such as supercomputers and high-speed
networks---also known as cyberinfrastructures---are transforming
scientific and engineering practices. Conducting new types of
science requires new and more powerful technologies to support
Challenges of High Performance Computing in Structural Industrial Finite Element Analysis
Date:Wednesday, January 28, 2009
Time:11:00am - 12:00pm
Location:380 Soda Hall, UC Berkeley
Speaker:
Louis Komzsik
Chief Numerical Analyst, Siemens PLM Software
Abstract:
The new millennium brought significant new challenges to high
performance computing in industrial finite element analysis. Millions of
node points and tens of millions of degrees of freedom are now
Quality of Service Guarantees for Dynamic Scientific Workflows
Date: Friday, January 30, 2009
Time:10:00am - 11:30am
Location: Bldg. 50F, Room 1647
Speaker:
Lavanya Ramakrishnan
Department of Computer Science Indiana University
Abstract:
Large scale computations from various scientific endeavors such as
bioinformatics, weather and storm-surge modeling, are composed as a
Numerical Methods for Large-Scale Ill-Posed Inverse Problems
Date: Thursday, January 29, 2009
Time:10:00am - 11:30am
Location: Bldg. 50F, Room 1647
Julianne Chung
Department of Mathematics & Computer Science
Emory University
Ill-posed inverse problems arise in a variety of scientific
An Event-Driven Kinetic Monte Carlo Algorithm for Reaction-Diffusion System /A Hybrid Particle and Continuum Algorithm for Hydrodynamics of Complex Fluids (There are two talks.)
Date: Friday, January 23, 2009
Time: 10:00am - 11:30am
Location: 50F-1647 Conference Room
Lawrence Postdoctoral Fellow
Lawrence Livermore National Laboratory
Abstract:
In this talk I will present my recent work at LLNL on two multiscale
Edgar Koerner [President of the Honda Research Institute Europe GmbH] CITRIS CSE Distinguished Speaker
Title: The Brain-like Vision
Location: 290 Hearst Memorial Mining Building, the Maria & Dado Banatao
Conference Room, UC Berkeley
Date: October 9, 2008
Time: 4:00pm - 5:00pm
Biography:
Edgar Koerner studied electrical engineering, control engineering, and
biomedical cybernetics at the Ilmenau Institute of Technology, Germany.
In 1988, Dr. Koerner was appointed full professor for biocybernetics and