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Staff information


Jim Ang

Physical & Computational Sciences
Pacific Northwest National Laboratory
PO Box 999
MSIN: K9-80
Richland, WA 99352


James "Jim" Ang joined the PNNL in April 2018 as chief scientist for computing and as the lab's point of contact for DOE's Advanced Scientific Computing Research mission. His responsibilities include providing senior leadership in high performance computing and supporting the development of PNNL’s lab-wide Computing Strategy. Jim is also cultivating opportunities for PNNL to support the National Strategic Computing Initiative’s Objective #2, Increasing coherence between the technology base used for modeling and simulation and that used for data analytic computing.

Prior to joining PNNL, Jim served as the a member of the initial DOE Exascale Computing Project (ECP) leadership team from 2015-2017. Jim’s role was the Director of ECP’s hardware technology focus area. His primary role and responsibility was the development and definition of the DOE ECP's hardware R&D strategy. The key elements of the strategy included: 1) Establish a portfolio of PathForward vendor-led hardware R&D projects for component, node and system architecture design, and 2) Create a Design Space Evaluation team to provide ECP with independent architectural analysis of the PathForward vendors' designs and the ability to facilitate co-design communication among the PathForward vendors and the ECP's application and system software development teams.

In 2009, Jim established the Association for High Speed Computing (AHSC), a professional non-for-profit organization established to host conferences, workshops, and technical exchanges among, national laboratory, industry, university and other government agency representatives. These technical exchange events are focused on high performance computing-related topics and may include other activities authorized by the AHSC Board of Directors. This is professional service to foster development of interdisciplinary and inter-organizational communication and collaboration for the HPC community. Regular conferences that are sponsored by AHSC include: The Salishan Conference on High Speed Computing, the Chesapeake Large Scale Analytics Conference (CLSAC), and the Current Challenges in Computing (Ccubed) Conference - (organized by LLNL).

Research Interests

  • HPC system architectures
  • System-on-Chip processor and node architectures and enabling technologies
  • Data movement capabilities: advanced memory subsystems, and HPC system interconnection network fabrics
  • HPC application performance analysis
  • HPC architectural system simulation
  • Pre-production and advanced architecture test beds
  • Holistic Co-design: multi-disciplinary, multi-institutional collaborations
  • Open Innovation, Lead Users

Education and Credentials

  • Ph.D., Mechanical Engineering, University of California, Berkeley
  • M.S., Mechanical Engineering, University of California, Berkeley
  • B.S., Mechanical Engineering, University of Illinois, Urbana-Champaign
  • B.A., Physics, Grinnell College

Affiliations and Professional Service

  • Association for High Speed Computing, President and Founding Member
  • IEEE Computer Society
  • Salishan Conference on High Speed Computing: Organizing Committee: 2003-2018
  • Chesapeake Large-Scale Analytics Conference: Organizing Committee: 2012-2018

Awards and Recognitions

  • NNSA Defense Program Award of Excellence
  • National Science Foundation Graduate Fellowship
  • UIUC, Dept of M&IE, Caterpillar Award - Outstanding senior in vehicle engineering
  • Honor Societies: Tau Beta Pi, and Pi Tau Sigma

Selected Publications


  • Ang, JA . 2017. "The DOE Exascale Computing Initiative: ECP and Holistic Co-design." Computing@PNNL Seminar Series, Dec. 12, 2017. Richland, WA, SAND2017-13295 PE.
  • Ang, JA, Cook, J, Domino, SP, Glass, MW, Hammond, SD, Hemmert, KS, Heroux, Hoekstra, RJ, Laros III, JH, Lin, PT,  Nam, HA Neely, R, Rodrigues, AF, Trott, CR. "Advances in Parallel Computing series," Fox, G, Getov, V, Grandinetti, L, Joubert, G, Sterling, T (Eds.), Convergence of Big Data and High-Performance Computing, IOS Press, Amsterdam, New York, Tokyo, SAND2017-8788B. 2017.Book Chapter: "Exascale Co-design Progress and Accomplishments."
  • Ang, JA. 2017. "The DOE Exascale Computing Project: Strategy for System Development." Coordination Panel for Advanced Detector R&D, Div. of Particles and Fields of the APS, University of New Mexico, Oct. 14, 2017, Albuquerque, NM.  SAND2017-11208 PE.

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