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October 2, 2017
Brent Lessley Presents Two Papers at LDAV 2017
CDUX Ph.D. student Brent Lessley presented two recent research results at the IEEE Large Data Analysis and Visualization (LDAV) Symposium today in Phoenix, AZ. His first paper, titled Maximal Clique Enumeration with Data-Parallel Primitives, demonstrated a new algorithm for maximal clique enumeration with an emphasis on portable performance across architectures. This paper also provides some initial encouraging evidence that data-parallel primitives are a viable technique for graph algorithms, whereas most recent research has focused on scientific visualization algorithms. Co-authors on the work include Talita Perciano and Wes Bethel of Lawrence Berkeley, as well as Manish Mathai and Hank Childs. Brent's second paper, titled Techniques for Data-Parallel Searching for Duplicate Elements, built on Brent's EGPGV paper in 2016 which looked at the external facelist calculation problem. As that work was extended to more architectures and more hashing techniques, limits to performance portability were uncovered. His LDAV paper explained these limits and demonstrated best practices. Co-authors on this work included Ken Moreland of Sandia Labs, CDUX alum Matt Larsen (now of LLNL), and Hank Childs.
September 30, 2017
Two CDUX Students Participate in Doctoral Colloquium at IEEE Visualization
Two CDUX students presented at the Doctoral Colloquium (DC) at the IEEE Visualization Conference in Phoenix, AZ. The DC connects experts with Ph.D. students. During the Colloquium, the students present their plans for their dissertations, and the experts provide feedback about how to strengthen their research. Our two participants were:
  • Stephanie Labasan, presentation: Optimizing Visualization Performance on Power-Constrained Supercomputers
  • James Kress, presentation: Tightly vs. Loosely Coupled In Situ: Which Technique to Use at Scale?
September 7, 2017
Shaomeng Li Presents Research Results at Cluster 2017
CDUX Ph.D. student Shaomeng Li traveled to Honolulu, Hawaii to present his recent research results at the IEEE Cluster Conference. The acceptance rate for Cluster 2017 was 20%, and only 15% for papers on data, storage, or visualization. His paper, titled Spatiotemporal Wavelet Compression for Visualization of Scientific Simulation Data, explored the value of using deep memory hierarchies on supercomputers, specifically to encode more information per bit by exploiting temporal coherence, instead of just spatial coherence. Co-authors on the work include CDUX Ph.D. student Sudhanshu Sane, Leigh Orf, Pablo Mininni, John Clyne, and Hank Childs.
June 22, 2017
Shaomeng Li's Research Presented at ISC In Situ Workshop
Samuel Li's dissertation research was presented at the ISC High Performance Workshop on In Situ Visualization in Frankfurt, Germany today. The presentation was titled "Wavelets as an In Situ Compression Operator for Post Hoc Exploration," and made the case that wavelets should be used for exascale computing.
June 19, 2017
Manish Mathai Awarded J. Donald Hubbard Family Scholarship
Manish Mathai received the J. Donald Hubbard Family Scholarship in Computer and Information Science at the CIS Department's commencement ceremony. This scholarship is awarded to students who show an interest in human-computer interaction, computer graphics, or multimedia. Congratulations Manish!!
June 12, 2017
CDUX Students Head to Summer Internships
Nine CDUX students will be spending their summers at DOE labs.
Six of our students will leave Eugene for new settings this summer:
  • Roba Binyahib, Nicole Marsaglia, and Abhishek Yenpure will head to Oak Ridge National Laboratory to work with David Pugmire on topics relating to particle advection and in situ processing.
  • Brent Lessley will return to Lawrence Berkeley National Laboratory to work with Wes Bethel on shared-memory parallel visualization techniques.
  • Sudhanshu Sane will head to Los Alamos National Laboratory to work with Roxana Bujack on Lagrangian flow.
  • Manish Mathai will head to Lawrence Livermore National Laboratory to work with CDUX alum Matt Larsen on parallel rendering.
Four students have already been doing their research remotely, and will continue doing so:
  • Ryan Bleile won the Livermore Graduate Research Fellowship in May of 2015, and has been conducting his research from LLNL for the last two years.
  • Stephanie Labasan also won the Livermore Graduate Research Fellowship in May of 2015. Before starting her fellowship, she spent one year at Intel working with the RAPL group. She is now completing the first full year of her fellowship.
  • Shaomeng Li has a staff position at NCAR, and is in the final stages of completing his dissertation.
  • James Kress has a staff position at Oak Ridge, and is working on results for his dissertation.
June 12-13, 2017
Two CDUX Students Presents Research Results at EGPGV 2017
Two CDUX Ph.D. students presented their research results at EuroGraphics Parallel Graphics and Visualization Symposium (EGPGV):
April 8, 2017
Kristi Belcher, NSF Graduate Research Fellow, To Join CDUX as Ph.D. Student in Fall 2017
We are excited to welcome Kristi Belcher, who has agreed to join CDUX as a Ph.D. student in Fall 2017. Kristi previously completed her B.S. at Texas State University, where she worked with Dr. Martin Burtscher as part of the Efficient Computing Laboratory. Her work culminated in a thesis, "Multi-GPU Parallelization of Irregular Algorithms." Further, we congratulate Kristi on winning an NSF Graduate Research Fellowship. These fellowships are extremely competitive, and provide Kristi with three years of funding. Great job Kristi, and we are very glad that you will be joining the team!!
February 2, 2017
Ryan Bleile Presents Research Results at SPIE Conference on Visualization and Data Analysis
CDUX Ph.D. student Ryan Bleile presented his research today at the SPIE Conference on Visualization and Data Analysis in San Francisco, CA. Ryan's paper was titled Accelerating Advection Via Approximate Block Exterior Flow Maps. The work explored tradeoffs between performance and accuracy for compute-intensive flow visualization algorithms. Co-authors on the work included Christoph Garth of Kaiserslautern University, Linda Sugiyama of MIT, and Hank Childs.
December 12, 2016
Staff Position at ORNL for James Kress
Congratulations to James Kress, who begins his new staff position as a Computer Scientist at the Oak Ridge National Laboratory today! His job assignment will continue his Ph.D. work, including in situ processing of very large data sets. He will be working on the ADIOS and VTK-m software tools. James will continue in the Ph.D. program as a remote student, and will complete his dissertation from ORNL.
November 21, 2016
Ph.D. Defense for Matt Larsen
Congratulations to Dr. Matt Larsen, who successfully defended his Ph.D. dissertation today!! His committee consisted of Hank Childs (advisor), Allen Malony, Boyana Norris, Paul Navratil (TACC), and Eric Corwin (UO, Physics). Matt's dissertation incorporated four of his five first-authored publications from his time at UO. Matt already began a staff position at LLNL in January of 2016, and will continue in that position after graduation.
November 15, 2016
Matt Larsen Presents Research Results at SC16
CDUX Ph.D. student Matt Larsen presented his recent research results at the SC16 conference in Salt Lake City, UT. His paper, a Best Paper Finalist, was titled Performance Modeling of In Situ Rendering. The work established a performance model over three rendering techniques, two architectures, and many rendering workloads. He then used the performance model to look at feasibility of in situ rendering workloads and to answer questions about relative benefit of rasterization and ray-tracing. Co-authors on the work include Cyrus Harrison of Lawrence Livermore, Dave Pugmire of Oak Ridge National Laboratory, Jeremy Meredith (formerly of Oak Ridge), and CDUX members James Kress and Hank Childs.
November 13, 2016
James Kress Presents Research Results at ISAV 2016
CDUX Ph.D. student James Kress presented his recent research results at the ISAV workshop, held in conjunction with SC16, in Salt Lake City, UT. His paper, titled Visualization and Analysis Requirements for In Situ Processing for a Large-Scale Fusion Simulation Code, reported on his survey of the XGC1 code team, with an eye toward in situ feasibility questions. Co-authors on the work include Dave Pugmire and Scott Klasky of Oak Ridge National Laboratory, and Hank Childs.
November 6, 2016
Ryan Bleile Presents Research Results at ANS Annual Winter Meeting
CDUX Ph.D. student Ryan Bleile traveled to Las Vegas to present his recent research results at the American Nuclear Society's Annual Winter Meeting. His paper, titled Algorithmic Improvements for Portable Event-Based Monte Carlo Transport Using the Nvidia Thrust Library, compared optimized CUDA and Thrust implementations in an effort to understand the costs for taking a hardware-agnostic approach.
October 23, 2016
Matt Larsen Presents Research Results at LDAV 2016
CDUX Ph.D. student Matt Larsen presented his recent research results at the IEEE Large Data Analysis and Visualization (LDAV) Symposium today in Baltimore, MD. His paper, titled Optimizing Multi-Image Sort-Last Parallel Rendering, demonstrated new algorithms that render batches of images together as much as twenty times faster than the current approach of rendering images one at a time. Co-authors on the work include Ken Moreland of Sandia National Laboratories, Chris Johnson of the University of Utah, and Hank Childs.
September 26, 2016
Staff Position at NCAR for Samuel Li
Congratulations to Samuel Li, who begins his new staff position as a Computer Scientist at the National Center for Atmospheric Research (NCAR) today! His job assignment will build on his Ph.D. work, including wavelet compression of very large data sets. He will also be working on the VAPOR software tool. Sam will continue in the Ph.D. program as a remote student, and will complete his dissertation from NCAR.
September 15, 2016
Undergrad Researcher Garrett Morrison Graduates, Becomes CDUX Staff
Congratulations to undergrad researcher Garrett Morrison, who graduated and received his Bachelor of Science. Garrett has worked as a CDUX undergrad researcher since Winter 2016. During that time, he worked on the GraviT ray-tracing project and the VisIt visualization program. Garrett will continue with CDUX, working as a staff member. He hopes to start as an MS student at UO in 2017.
June 15, 2016
Matt Larsen's SC16 Submission Selected as Best Paper Finalist
Matt Larsen's submission to the SC16 conference was selected as a Best Paper Finalist. The title of his paper is "Performance Modeling for In Situ Rendering." His study looked at three rendering techniques (rasterization, ray-tracing, and volume rendering), and multiple architectures (GPU and CPU) and built a performance model over diverse rendering workloads. The results are useful, since visualization algorithms frequently need to fit within in situ constraints, and this model will allow researchers to predict whether they can. Co-authors on the work include James Kress and Hank Childs of CDUX, as well as Cyrus Harrison of LLNL and Jeremy Meredith and David Pugmire of ORNL. Congratulations everyone!!
June 13, 2016
Undergrad Researcher Ouermi Timbwaoga Aime Judicael Completes Thesis, Graduates
Undergrad researcher Ouermi Timbwaoga Aime Judicael (TAJO) graduated today, receiving his Bachelor of Science. TAJO has worked as a CDUX undergrad researcher since Fall of 2015. During that time, he completed an undergrad thesis titled "Evaluating Spatiotemporal Search Structures for Lagrangian Basis Flows." TAJO will next head to an internship at Lawrence Livermore, advised by Timo Bremer, and then will go to the Ph.D. program at the University of Utah, advised by Mike Kirby. Congratulations TAJO!!
June 12, 2016
Ryan Bleile Presents Research Results at ANS Annual Meeting
CDUX Ph.D. student Ryan Bleile traveled to New Orleans to present his recent research results at the American Nuclear Society's Annual Meeting. His paper, titled Investigation of Portable Event Based Monte Carlo Transport Using the Nvidia Thrust Library, compared CUDA and Thrust implementations in an effort to understand the costs for taking a hardware-agnostic approach.
June 6, 2016
Brent Lessley Presents Research Results at EGPGV 2016
CDUX Ph.D. student Brent Lessley traveled to Groningen in the Netherlands to present his recent research results at the EuroGraphics Parallel Graphics and Visualization Symposium. His paper, titled External Facelist Calculation with Data-Parallel Primitives, contributed new algorithms for external facelist calculation based on the data-parallel primitive paradigm. These algorithms are thought to be the first-ever shared-memory algorithms for this problem. Co-authors on the work include CDUX Ph.D. student Roba Binyahib, Rob Maynard of Kitware, and Hank Childs.
June 4, 2016
CDUX Students Head to Summer Internships
Nine CDUX students will be spending their summers at DOE labs. For the second year in a row, every student in the group interested in an internship landed one.
Five of our students will leave Eugene for new settings this summer:
  • Ph.D. student Roba Binyahib will head to Argonne National Laboratory to work with Tom Peterka on distributed-memory visualization techniques.
  • Ph.D. student Brent Lessley will head to Lawrence Berkeley National Laboratory to work with Wes Bethel on shared-memory parallel visualization techniques.
  • Ph.D. student Samuel Li will head to Los Alamos National Laboratory to work with Chris Sewell on VTK-m.
  • Undergraduate TAJO will head to Lawrence Livermore National Lab, to work with Timo Bremer on performance visualization. He will then head to the University of Utah to begin the Ph.D. program there.
  • Ph.D. student Sudhanshu Sane will head to Lawrence Livermore National Laboratory to work with Eric Brugger on in situ processing.
Four students have already been doing their research remotely, and will continue doing so:
  • Ph.D. student James Kress has been at Oak Ridge Laboratory since June of 2015, and will continue his research from Tennessee this summer.
  • Ph.D. student Ryan Bleile won the Livermore Graduate Research Fellowship in May of 2015, and has been conducting his research from LLNL for the last year.
  • Ph.D. student Stephanie Labasan also won the Livermore Graduate Research Fellowship in May of 2015. Before starting her fellowship, she spent one year at Intel working with the RAPL group. She will now head down to LLNL to begin her fellowship.
  • Ph.D. student Matt Larsen has a staff position at Lawrence Livermore, and is in the process of completing his dissertation.
Finally, M.S. student Vincent Chen will do a summer internship at Amazon in Toronto.
April 15, 2016
Undergrad Researcher Kirsten Dawes Graduates, to Attend UT Ph.D. Program in Fall 2016
Undergrad researcher Kirsten Dawes graduated with her BS from UO in March, and will begin as a Ph.D. student at the University of Tennessee in the Fall. In the interim, she will continue working with CDUX, now as a staff member. Kirsten has worked on the Intel Parallel Computing Center project for the last two years, and will continue doing so for the next five months. Congratulations Kirsten!!
April 1, 2016
Undergrad Researcher Ouermi Timbwaoga Aime Judicael to Enroll as Ph.D. Student at the University of Utah
Undergrad researcher Ouermi Timbwaoga Aime Judicael (TAJO) has been accepted to the Ph.D. program at the University of Utah and will enroll there after graduation from UO. He will be working with Mike Kirby. Congratulations TAJO!!
January 25, 2016
James Kress featured by UO
The University of Oregon Graduate School selected James Kress to be featured on their website. Congrats to James on the nice article, which includes details on his extended internship at Oak Ridge National Laboratory.
January 18, 2016
Staff Position at Lawrence Livermore for Matt Larsen
Congratulations to Matt Larsen, who begins his new staff position as a Computer Scientist at Lawrence Livermore this week! His job assignment will build on his Ph.D. work, including in situ visualization, rendering, and optimizing performance on many-core devices. Matt will continue in the Ph.D. program as a remote student, and will complete his dissertation from LLNL.
December 11, 2015
Samuel Li Receives NCAR ASP Award
Congratulations to Shaomeng (Samuel) Li for being selected for NCAR's Advanced Study Program! This program funds student researchers to spend time at NCAR's campus to work with NCAR researchers. Samuel will spend January thru March of 2016 in Boulder, CO working with John Clyne of NCAR, where they will continue looking at compression of scientific data sets using wavelets.
November 15-20, 2015
CDUX at SC15
CDUX participated in many activities at the SC15 conference:
  • James Kress and Matt Larsen presented their research papers at the ISAV workshop.
  • Kirsten Dawes, Hang Xu, Elliott Ewing, and Hank Childs all contributed to a demonstration of VisIt running on the Xeon Phi, along with Alok Hota and Jian Huang of the University of Tennessee at Knoxville. The demo was shown at Intel's HPC Developers Conference and at the UTK booth on the showroom floor.
  • Samuel Li co-chaired a panel on student engagement in HPC.
  • Hank Childs presented at four different venues:
    • "Optimizing VisIt for Next Generation Architectures" at Intel's HPC Developer's Conference, along with Jian Huang.
    • The tutorial "Effective HPC Visualization and Data Analysis using VisIt," along with Cyrus Harrison (organizer), David Pugmire, Rob Sisneros, and Amit Chourasia.
    • A lightning talk at ISAV on the need for standardizing in situ terms.
    • The Birds-of-a-Feather "Planning for Visualization on the Xeon Phi," along with Paul Navratil, Aaron Knoll, and Ingo Wald. Hank also organized this BOF.
November 17, 2015
Two CDUX Students Present Research Results at ISAV
Two CDUX Ph.D. students presented their research results at the ISAV workshop, held in conjunction with SC15 in Austin, TX.
October 26, 2015
Three CDUX Students Present Research Results at LDAV
Three CDUX Ph.D. students presented their research results at the IEEE Large Data Analysis and Visualization Symposium in Chicago, IL:
June 15, 2015
Matt Larsen Awarded J. Donald Hubbard Family Scholarship
Matt Larsen received the J. Donald Hubbard Family Scholarship in Computer and Information Science at the CIS Department's commencement ceremony. This scholarship is awarded to students who show an interest in human-computer interaction, computer graphics, or multimedia. Congratulations Matt!
June 12, 2015
8 CDUX Students Head To Internships, Including 15 Month Internship for James Kress
Eight CDUX students are heading off for summer internships. This includes every student in the group who wanted to pursue an internship.
  • Ph.D. student James Kress will return to Oak Ridge Lab, to work with David Pugmire on in situ visualization. James will spend fifteen months at ORNL, embedding with a simulation team in an effort to understand the viability of in situ for their workflows.
  • Ph.D. student Samuel Li will head to the National Center for Atmospheric Research, to work with John Clyne on wavelet compression.
  • Undergraduate Kirsten Dawes will head to Lawrence Livermore National Lab, to work with Jeff Keasler on parallel computing.
  • Undergraduate Elliott Ewing will head to Lawrence Berkeley National Lab, to work with David Camp on optimizing visualization workloads on the Xeon Phi.
  • Ph.D. student Matt Larsen will head to Lawrence Livermore National Lab, to work with Eric Brugger on using ray-tracing in an in situ setting.
  • Ph.D. student Brent Lessley was accepted into the Google Summer of Code, which sponsors students to contribute on open source projects. Brent will work with Rob Maynard of Kitware, Inc. and Ken Moreland of Sandia National Lab. His project focuses on efficient usage of modern architectures within the VTK-m framework.
  • Ph.D. student Ryan Bleile will return to Lawrence Livermore National Lab, to work with Patrick Brantley and Matt O'Brien. This internship, lined up before he was awarded a Lawrence Graduate Scholar Fellowship, will also research Monte Carlo methods. Ryan will begin his Fellowship at LLNL when his internship ends.
  • Ph.D. student Stephanie Labasan will head to Intel, to work with the RAPL power team in Hillsboro, OR. Stephanie was originally headed to LLNL prior to being awarded the Lawrence Graduate Scholar Fellowship, but opted to delay the start of her Fellowship to embed with Intel's power group.
May 25, 2015
Matt Larsen Presents Research Results at EGPGV 2015
CDUX Ph.D. student Matt Larsen traveled to Cagliari, Italy to present his recent research results at the EuroGraphics Parallel Graphics and Visualization Symposium. His paper, titled Volume Rendering Via Data-Parallel Primitives Parallel Framework, contributed a new volume rendering algorithm based on the data-parallel primitive paradigm. His algorithm is raycasting-based and operates on unstructured meshes. Co-authors on the work include CDUX Ph.D. student Stephanie Labasan, Paul Navratil of TACC, Jeremy Meredith of Oak Ridge Lab, and Hank Childs.
May 20, 2015
Stephanie Labasan and Ryan Bleile Awarded Lawrence Graduate Scholar Fellowship
Two CDUX Ph.D. students, Ryan Bleile and Stephanie Labasan, have received Lawrence Graduate Scholar Fellowships. This Fellowship is highly competitive and this is thought to be the first time that two awards went to members of the same research group. The fellowship will fund the remainder of their Ph.D.'s, and both students will relocate to Lawrence Livermore National Laboratory to work with co-advisors at LLNL. Stephanie's proposal, "Optimal Power Scheduling for Visualization on Supercomputers" was sponsored by Barry Rountree and Peer-Timo Bremer. Ryan's proposal, "Simulating Monte Carlo Nuclear Particle Transport On Advanced Computing Architectures" was sponsored by Patrick Brantley and Matthew O'Brien.
April 15, 2015
Matt Larsen Presents Research Results at PacificVis 2015
CDUX Ph.D. student Matt Larsen traveled to Hangzhou, China to present his recent research results at the IEEE Pacific Visualization Symposium. His paper, titled Ray-Tracing Within a Data Parallel Framework, demonstrated that the data-parallel primitive approach, currently en vogue for visualization on modern architectures, can achieve excellent performance with ray-tracing, an algorithm that has both unstructured memory accesses and high computational load. Co-authors on the work include Paul Navratil of TACC, Jeremy Meredith of Oak Ridge Lab, and Hank Childs.
February 9, 2015
Samuel Li Wins a Best Paper at SPIE Conference on Visualization and Data Analysis
CDUX Ph.D. student Samuel Li received one of the Best Paper awards at the SPIE Conference on Visualization and Data Analysis in San Francisco, CA. Samuel's paper was titled Exploring Visualization Designs Using Phylogenetic Trees. This publication was a continuation of his M.S. research at Tufts University, where he was advised by Remco Chang. Remco and several other Tufts students were co-authors on the paper, along with Hank Childs.
November 17-22 2014
Intel Booth Demo at SC14
Ryan Bleile, Kirsten Dawes, and students from the University of Tennessee at Knoxville pulled together a successful demo for the Intel booth at the ACM/IEEE SuperComputing (SC14) conference in New Orleans, LA. The demonstration highlighted recent successes from our team's Intel Parallel Computing Center. Specifically, the demo showed VisIt running on an Intel Xeon Phi, doing significant computation on the Phi, and rendering with Intel's SWR library on Xeon CPUs.
April 30, 2014
Ryan Bleile to Join Lawrence Livermore National Laboratory for Summer Internship
CDUX member Ryan Bleile accepted an internship with Lawrence Livermore National Laboratory in Livermore, CA for summer 2014. He will be working with Shawn Dawson in the B Division code group on Monte Carlo Transport in the many core space.
April 7, 2014
Jordan Weiler Accepts Offer to Join Emberex After graduation
CDUX member Jordan Weiler has accepted an offer to join Emberex in Eugene, OR as a full-time developer after his June graduation. He will be supporting a large project involved with Cengage Learning.
March 31, 2014
Matt Larsen to Join Oak Ridge National Laboratory for Summer Internship
CDUX member Matt Larsen accepted an internship with Oak Ridge National Laboratory in Oak Ridge, TN for summer 2014. He will be working with Jeremy Meredith in the Computer Science and Mathematics Division on the development of EAVL (Extreme-scale Analysis and Visualization Library) volume renderer.
March 31, 2014
James Kress to Join Oak Ridge National Laboratory for Summer Internship
CDUX member James kress accepted an internship with Oak Ridge National Laboratory in Oak Ridge, TN for summer 2014. He will be working with Dave Pugmire in the Computer Science and Mathematics Division on the development and extension of EAVL (Extreme-scale Analysis and Visualization Library).
February 14, 2014
Stephanie Labasan to Join Intel for Summer Internship
CDUX member Stephanie Labasan accepted an internship with Intel in Hillsboro, OR for summer 2014. She will be working on software for energy and power analysis in the Software and Services Group.