Jim Ang

Jim Ang is a technical manager at Sandia National Labs, where he leads the Scalable Computer Architectures department.  His department is focused on critical technologies for leading edge high performance scientific and data-intensive computer systems.  Areas of active research include: energy-efficient computer architectures, advanced processor designs, advanced memory subsystems, interconnection network technology, system resilience capabilities, scalable I/O, large-scale systems simulations and application performance analysis.  Jim also has many years of experience leading interdisciplinary teams to develop, integrate and deploy advanced technology systems and products; and establishing collaborative partnerships that cross organizational boundaries.  Jim received his PhD in Mechanical Engineering from the University of California at Berkeley in 1986.  Jim also has a M.S. from Berkeley, B.S. from the University of Illinois, and a B.A. from Grinnell College.  Upon completion of his graduate degrees, Jim spent a few years working for a DoD contractor in Santa Barbara, CA, before he joined Sandia National Laboratories in 1989.  Jim is a member of IEEE, IEEE-Computer Society, the Hypervelocity Impact Society, Tau Beta Pi, and Pi Tau Sigma.

Keren Bergman

Keren Bergman is a Professor of Electrical Engineering at Columbia University where she also directs the Lightwave Research Laboratory. She leads multiple research programs on optical interconnection networks for advanced computing systems, Terascale optical routers, wavelength-striped optical packet switched networks, and chip multiprocessor nanophotonic networks-on-chip. Dr. Bergman received the B.S. from Bucknell University in 1988, and the M.S. in 1991 and Ph.D. in 1994 from M.I.T. all in Electrical Engineering. She is a recipient of the National Science Foundation CAREER award in 1995, the Office of Naval Research Young Investigator in 1996, and the CalTech President’s Award in 1997 for joint work with JPL on optical packet networks. In 2008 Dr. Bergman was named recipient of the IBM Faculty Award for her research on nanophotonic networks-on-chip. She is a Fellow of OSA and was recently elected a Fellow of IEEE. Dr. Bergman currently serves as Associate Editor for IEEE Photonic Technology Letters and is the co-Editor-in-Chief of the IEEE/OSA Journal of Optical Communications and Networking.

Ron Brightwell

Ron Brightwell received his BS in mathematics in 1991 and his MS in computer science in 1994 from Mississippi State University. He joined Sandia National Laboratories in 1995 and is currently a Principal Member of Technical Staff. While at Sandia, he has designed and developed software for lightweight compute node operating systems and high-performance networks on several large-scale massively parallel systems, including the Intel Paragon and TeraFLOPS, and the Cray T3 and XT series of machines. His research interests include high-performance, scalable communication interfaces and protocols for system area networks, operating systems for massively parallel processing machines, and parallel program performance analysis libraries and tools.

Derek Chiou

Derek Chiou is an assistant professor at the University of Texas at Austin. His research areas are high performance computer simulation, computer architecture, parallel computing, Internet router architecture and network processors. Before UT, Dr. Chiou was a system architect for five years at Avici Systems, a manufacturer of terabit core routers. Dr. Chiou received his Ph.D., S.M. and S.B. degrees in Electrical Engineering and Computer Science from MIT. He is currently a research affiliate of the MIT Computer Science and Artifical Intelligence Laboratory (CSAIL) and a PI in the RAMP collaborative. His research is supported by a DOE Early Career Principal Investigator award, an NSF CAREER award, NSF and SRC awards as well as donations from Intel, IBM, Xilinx, Freescale, Altera, and VMWare.

Christian Englmann

Christian Engelmann is a R&D staff member in the Computer Science Research Group at Oak Ridge National Laboratory. He holds a PhD and a MSc in Computer Science from the University of Reading, UK, and a MSc in Computer Systems Engineering from the Technical College for Engineering and Economics Berlin, Germany. His research aims at providing high-level reliability, availability, and serviceability for next-generation supercomputers to improve their resiliency (and ultimately efficiency) through novel high availability and fault tolerance system software solutions. Another area Dr. Engelmann is focusing on is technologies for scientific application portability across divers supercomputing platforms.

Don Grice

Dr. Grice is currently the Chief Engineer for the Roadrunner project. Don had responsibility for
system design and integration and is now working on the architecture for the next generation of heterogeneous computing.

Prior to the Roadrunner project he was the Chief Engineer for the IBM SP and has been working in HPC for most of his career.

He joined IBM Kingston in 1972 after graduating from RPI with a BSEE.  He earned
his PhD (EE) in speech signal processing in 1984 from RPI while working at IBM Kingston
on a voice assisted terminal program.

He was an adjunct professor at RPI for 10 years (1984-1994) teaching multi-processing
microprocessor systems.

Paul Hargrove

Paul Hargrove has been a full-time staff member of the Future Technologies Group at Lawrence Berkeley National Lab since 2000, where his research interests include the operating system and runtime software which support scientific applications. Specific areas include checkpoint/restart for Linux and high-performance networks such as InfiniBand. Current projects include Berkeley Lab Checkpoint Restart (BLCR) for Linux, the Berkeley Unified Parallel C (UPC) compiler, and Global Address Space Networking (GASNet). Paul holds a Ph.D. from the Scientific Computation and Computational Mathematics program at Stanford University and a Bachelor of Arts degree (Magna Cum Laude) from Cornell University (triple major in Physics, Math and Computer Science).

Michael Heroux

Michael A. Heroux worked at Cray Research from 1988 to 1998, the last three years as part of Silicon Graphics. During his first five years he developed mathematical libraries for sparse and dense systems of equations on Cray systems. Following this, he worked in the application division, focusing on solution methods for fluid dynamics, oil and gas and structural applications, both for commercial applications such as FIDAP and FLUENT, and for individual customer applications. During his final three years he managed several groups of scientists focused on new application capabilities in science and engineering, and parallel applications. During these years he was also the applications representative on future architecture teams, including the Cray T3E and SV2 systems.

Presently Dr. Heroux is a Distinguished Member of the Technical Staff at Sandia National Laboratories, working on new algorithm development, and robust parallel implementation of solver components for problems of interest to Sandia and the broader scientific and engineering community. He leads development of the Trilinos Project, an effort to provide state of the art solution methods in a state of the art software framework. Trilinos is a 2004 R&D 100 award-winning product, freely available as Open Source and actively developed by dozens of researchers.

In addition to Trilinos, Dr. Heroux works on the development of scalable parallel scientific and engineering applications and maintains his interest in the interaction of scientific/engineering applications and high performance computer architectures. He leads the Mantevo project, which is focused on the development of Open Source, portable micro-applications and micro-drivers for scientific and engineering applications. Dr. Heroux is a telecommuter for Sandia, maintaining an office at home in rural central Minnesota and at St. John’s University where he is an adjunct faculty member in the Computer Science Department.

Andrew Jones

Andrew is Vice-President High Performance Computing (HPC) Business for the NAG Group, with responsibility for NAG’s HPC consulting business. Andrew is also part of the team providing the UK’s HECToR national supercomputing service, and in particular coordinates relationships with international supercomputer centres. Andrew joined NAG in 2008, with over 10 years of experience in High Performance Computing (HPC), mostly applied to scientific research but also some defence applications. Before joining NAG, Andrew was Head of HPC at the University of Manchester, and was involved in both the previous CSAR national supercomputing service and the European PRACE supercomputing initiative.

Vincent Keller

Vincent Keller received his Master degree in Computer Science from the University of Geneva (Switzerland) in 2004. From 2004 to 2005, he holds a full-time researcher position at the University Hospital of Geneva (HUG). He was involved in HUG on simulating blood flows in cerebral aneurysms using real geometries constructed from 3D X-rays tomography.

The numerical method used was Lattice-Boltzman Method (LBM). Vincent received his PhD degree in 2008 from the Swiss Federal Institute of Technology (EPFL) in the HPCN and HPC Grids fields. He developed a low-level application-oriented monitoring system (VAMOS) and the Resource Broker of the IANOS (Intelligent ApplicatioN-Oriented System) framework. Since 2009, Dr. Vincent Keller holds a full-time researcher position at University of Bonn in Germany. His research interests are in HPC applications analysis, Grid and cluster computing and energy efficiency of large computing ecosystems.

Dean Klein

Dean Klein is the Vice President of Memory System Development at Micron Technology, Inc. Mr. Klein holds BSEE and MEE degrees from the University of Minnesota and holds over 200 patents in the area of memory technology and system architecture. In his current role, Mr. Klein is responsible for developing the company’s Solid State Drive products.

Dieter Kranzlmueller

Dieter Kranzlmueller is full professor of computer science at the Ludwig-Maximilians-Universitaet (LMU) Muenchen and member of the board of the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences and Humanities. He has worked in parallel computing and computer graphics since 1993, with a special focus on parallel programming and debugging, cluster and especially grid computing. At present, he serves as Strategic Director for EGI_DS, the European Grid Initiative Design Study and as Area Director Applications of the Open Grid Forum (OGF).

Ronald Luijten

Ronald P. Luijten received his Masters of Electronic Engineering with honors from the University of Technology in Eindhoven, Netherlands in 1984. In the same year he joined the communication systems department at IBM’s Zurich Research Laboratory in Switzerland. He has contributed to the design of various communication chips, including PRIZMA switches and ATM adapter chip sets, the latter culminating in a 15-month assignment at IBM’s networking development laboratory in La Gaude, France as lead-architect, from 1994-95. He manages the IBM server technologies research team in Zurich since 1997, which completed the OSMOSIS optical switch demonstrator in close collaboration with Corning, inc. for the US DOE at the end of 2007. Ronald’s research interests are in datacenter interconnect system performance and design (‘Data Motion in Data Center’). His team is working on optimizing HPC interconnect fabrics for the PERCS machine (IBM DARPA funded project), for the follow-on to Mare Nostrum with the Barcelona Supercomputer Center and for new exploratory architectures with ORNL. His team also works on standardizing congestion control within the Ethernet 802.1Qau body and is also working on 2.5D pattern matching functions for developing the 22nm CMOS design methodology. He holds more than 20 patents, and has co-organized 5 passed IEEE ICCCN conferences and is co-organizing ICCCN 2010. He has been invited to various panels, including at the Super Computing conference 2007 on HPC interconnects. IBM has awarded Ronald with two outstanding technical achievement awards.

Christine Morin

Christine Morin received her engineering degree from the Institut National des Sciences Appliquées (INSA), of Rennes (France), in 1987 and master and PhD degrees in Computer Science from the University of Rennes I in 1987 and 1990, respectively. In March 1998, She got her Habilitation à Diriger des Recherches in Computer Science from the Université de Rennes 1.

Since 1991, she has held a researcher position at INRIA and has carried out her research activities at IRISA/INRIA-Rennes. Since January 2000, she has been a member of the INRIA PARIS project-team contributing to the programming of large scale parallel and distributed systems. From October 2000 to August 2002, she has held a temporary assistant professor position at IFSIC (University of Rennes I). Since September 2002, she has held a senior researcher position at INRIA. Since 1999, she has led research activities on single system image OS for high performance computing in clusters, resulting in Kerrighed cluster OS, now developed in open source ( She is the scientific coordinator of the XtreemOS project which is a 4-year European integrated project started in June 2006 ( She is a co-founder of Kerlabs start-up, created in 2006 to exploit Kerrighed  technology ( Her research interests are in operating systems, distributed systems, fault tolerance, cluster and grid computing. She is the author of more than 80 papers in refereed international journals and conferences. She is a member of ACM and IEEE.

Lenny Oliker

Lenny Oliker is a Computer Staff Scientist in the Future Technologies Group of the Computational Research Division at LBNL. He performed his doctoral and postdoctoral work at NASA Ames research center. Lenny has co-authored over 60 technical articles, and has received four best paper awards, including IPDPS 2007 and 2008. His research interests include HPC evaluation, multi-core auto-tuning, and power-efficient computing.

Ben Ralston

Ben Ralston has been Head of Computer Science at the UK’s Atomic Weapons Establishment in Aldermaston since 2003. He left University with a D Phil in Computational Chemistry then wrote FORTRAN on projects across Europe for a scientific consultancy, Logica, before joining Cray in 1979 as one of their first two application tuners outside the USA. He helped Cray acquire their first non-government sites until joining IBM as they re-entered the supercomputer market where he was eventually responsible for UK Academia. He retired after 18 years with IBM to take up his current role.

He still runs regularly, at least socially as a hash house harrier, and supports his two daughters with their goal to scull for the British rowing team.

Rolf Riesen

Rolf Riesen is a principal member of technical staff at Sandia National Laboratories in Albuquerque, New Mexico. He holds a Ph.D. degree in computer science from the University of New Mexico (UNM). His research interests include message passing systems, operating systems, and runtime software for massively parallel computers. Over the last fifteen years in this field he has primarily concentrated on topics related to efficient, scalable message passing and interactions at the software/hardware boundary. Dr. Riesen has been a key
member of the design team for SUNMOS (Sandia/UNM OS) for the nCUBE 2 and the Intel Paragon, as well as Puma/Cougar, the second generation light weight kernel for the Intel ASCI Red machine. He is also a key designer of the Portals message passing mechanism. He has been a principal designer of Cplant, the largest commodity cluster for scientific applications in the world. More recently, Dr. Riesen has begun work on a parallel discrete event simulator framework. The goal of that project is to simulate current and future parallel systems to assist with purchase and design decisions.

Marie-Christine Sawley

At the beginning of 2008, Marie-Christine Sawley joined the Institute for Particle Physics of ETH-Zürich, currently headed by Professor André Rubbia. She is a member of the team at CERN working as senior scientist on the massive computing requirements of the CMS (Compact Muon Solenoid) experiment.

Marie-Christine Sawley graduated in physics and engineering at EPF-Lausanne in 1980, and completed a PhD in plasma physics at CRPP-EPFL in 1985 on analytical and numerical studies of the coupling phenomena between electromagnetic waves and magnetically confined plasmas. In 1997, she attended the “Leadership Competence Program” at IMD in Lausanne on scholarship from EPFL

In 1987-88, she worked as a post-doc in the School of Physics at University of Sydney in Australia. At the end of 1988, she returned to Switzerland as Head of the User Consulting Group at the Scientific Computing Centre of EPFL and, during the period 1994-96, was Support Team Manager of the CRAY-EPFL Partnership Program on Parallel Applications. In 1998-99, she worked with the ETH Board President on the establishment of the Swiss Virtual Campus before joining the Direction de la Valorisation at EPFL in February 2000. In July 2003, she was nominated General Manager of CSCS, the Swiss National Supercomputing Centre and managed the centre under a 4-year performance mandate, with a total budget of 55 MCHF and a scientific and technical staff of 35. Under her leadership, the CSCS was the first high-performance computing centre in Europe to install in production a CRAY XT3 supercomputer system.

As a specialist of all layers of infrastructure for scientific computing for more than two decades, Marie-Christine Sawley has been active in a number of conference programmes committees, technology selection committees, as white-paper editor and as a speaker. She was one of the proponents and drivers for establishing the Vital-IT centre of the Swiss Institute for Bioinformatics in 2002. She has also conducted many activities in the area of scientific and technology outreach, such as for the EPFL CRAY collaboration in 1994-95, EPFL Alinghi project in 2002-03, and promotion of ETH Zurich and Swiss industries in the building of the CMS detector at CERN in 2008.Married with two daughters, Marie-Christine Sawley has Swiss and French nationalities.

Thomas Schulthess

Thomas Schulthess received his PhD in Physics in 1994 from the ETH Zurich. After a postdoctoral fellowship at Lawrence Livermore National Laboratory he joined Oak Ridge National Laboratory (ORNL) in 1997, initially as a postdoctoral fellow in Metals and Ceramics Division. In 1999 he became a research staff member and from 2002 to 2008 served as group leader of the Computational Materials Sciences Group of ORNL’s Computer Science and Mathematics Division. Additionally, in 2005, Thomas was appointment at ORNL’s Nanoscience Research Center, the Center for Nanophase Materials Sciences, where he was leading the Nanomaterials Theory Institute until 2008. Since October 2008, Thomas holds a chair in computational physics at ETH Zurich and directs the National Supercomputing Center of Switzerland in Manno. Thomas’ research interests are in condensed matter, nano-, and materials sciences, as well as the development and use of high performance computing to solve important problems in these fields. He led the team that was awarded the 2008 ACM Gordon Bell Prize for the development of DCA++, an applications to study models of high temperature superconductors and that sustained a petaflop/s in November 2008.

Stephen L. Scott

Dr. Stephen L. Scott is a Senior Research Scientist and team leader of the System Software Research Team in the Computer Science Group of the Computer Science and Mathematics Division at the Oak Ridge National Laboratory (ORNL), Oak Ridge, TN, USA. Dr. Scott’s research interest is in experimental systems with a focus on high performance distributed, heterogeneous, and parallel computing. He is a founding member of the Open Cluster Group (OCG) and Open Source Cluster Application Resources (OSCAR). Within this organization, he has served as the OCG steering committee chair, as the OSCAR release manager, and as working group chair. Dr. Scott is the project lead principal investigator for the Reliability, Availability and Serviceability (RAS) for Petascale High-End Computing research team. This multi-institution research effort, funded by the Department of Energy – Office of Science, concentrates on adaptive, reliable, and efficient operating and runtime system solutions for ultra-scale scientific high-end computing (HEC) as part of the Forum to Address Scalable Technology for Runtime and Operating Systems (FAST-OS). Dr. Scott is also principal investigator of a project investigating techniques in virtualized system environments for petascale computing and is Co-PI of a related storage effort, funded by the National Science Foundation, which is investigating the advantages of storage virtualization in petascale computing environments. Dr. Scott serves on a number of scientific advisory boards and is presently serving as the chair of the international Scientific Advisory Committee for the European Commission’s XtreemOS project.

Stephen has published over 100 peer-reviewed papers in the areas of parallel, cluster and distributed computing and holds both the Ph.D. and M.S. in computer science. He is also a member of ACM, IEEE Computer, and IEEE Task Force on Cluster Computing.

Steve Scott

Dr. Steve Scott is the Chief Technology Officer at Cray Inc., where has been since receiving his PhD in computer architecture from the University of Wisconsin at Madison in 1992.  Steve was the Chief Architect of the Cray X1 and X2 supercomputers, was one of the principle architects of the Cray T3E, architected the routers for the Cray XT line and the follow-on Baker system, and is leading the Cray Cascade project funded by the DARPA High Productivity Computing Systems program.  Steve holds twenty US patents, and has served on numerous program committees.  He was the 2005 recipient of the ACM Maurice Wilkes Award and the IEEE Seymour Cray Computer Engineering Award.

Thomas Sterling

Dr. Thomas Sterling is a Professor of Computer Science at Louisiana State University, a Faculty Associate at California Institute of Technology, and a Distinguished Visiting Scientist at Oak Ridge National Laboratory. He received his PhD as a Hertz Fellow from MIT in 1984. Dr. Sterling is probably best known as the “father” of Beowulf clusters and for his research on Petaflops computing architecture. He was one of several researchers to receive the Gordon Bell Prize for this work on Beowulf 1997. In 1996, he started the inter-disciplinary HTMT project to conduct a detailed point design study of an innovative Petaflops architecture. He currently leads the MIND memory accelerator architecture project for scalable data-intensive computing and is an investigator on the DOE sponsored Fast-OS Project to develop a new generation of configurable light-weight parallel runtime software system. Thomas is co-author of five books and holds six patents.