Sudip K Seal

Sudip K Seal

Senior R&D Staff

Bio

Sudip Seal is a Senior Scientist in the Computer Science and Mathematics Division, Oak Ridge National Laboratory. He is also a Joint ORNL-UT Associate Professor in the Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxvile. He holds a PhD in computer engineering and a PhD in theoretical high energy physics. He specializes in the design and development of HPC solutions for large-scale science-based computational problems and, in that capacity, is actively involved in the fusion, neutron and materials sciences at present.

Sudip leads the DAPPER (Data Analysis Parallel Package Maker) project. DAPPER is the prototype of a highly-scalable and versatile application-independent parallel framework targeted toward the rapid development of scalable application-specific data analysis software. As part of the DAPPER project, he is leading the development of the world's first large-scale distributed memory framework for at-scale study and analysis of massive atom probe tomography data with hundreds of millions to billions of atoms collected by the state-of-the-art Local Electrode Atom Probe (LEAP) microscope.

Sudip is the lead architect of PARVMEC (Parallel Variational Moments Equilibrium Code), the fastest 3D plasma equilibrium solver in the world. PARVMEC enabled high-speed high-resolution plasma equilibria reconstructions that led to the first confirmation of a helical core in the DIII-D tokamak at the National Fusion Facility, San Diego, USA in 2017. Sudip also developed the distributed-memory parallel version of SIESTA (Scalable Iterative Equilibrium Solver for Toroidal Applications) which is over 30 times faster than its predecessor and is used to study plasma equilibira with magnetic islands.

Sudip is leading the development of PARADYSE (Parallel Debye Summation Engine). PARADYSE, which has already been demonstrated to deliver over three orders of magnitude in speedup, is scoped to replace the current Debye summation engine used for structure refinement by all users of the SNS (ORNL).

Awards

  1. Significant Event Award (2017, Oak Ridge National Laboratory)
    • Citation: Groundbreaking Plasma Equilibrium Computations for Next-Generation Fusion Studies, shared with Dr. Steven P. Hirshman (FMNSD).
  2. Runner-up Best Paper Award (2016, 45th International Conference on Parallel Processing)
    • PARVMEC: An Efficient, Scalable Implementation of the Variational Moments Equilibrium Code, Sudip K. Seal, Steven P. Hirshman, Andreas Wingen, Robert S. Wilcox, Mark R. Cianciosa and Ezekial A. Unterberg.
  3. Significant Event Award (2014, Oak Ridge National Laboratory)
    • Citation: HPC Advancements in MHD Equilibrium Analysis Capability for Future Tokamak and Stellarator Designs, shared with Dr. Steven P. Hirshman (FMNSD).

Publications

  1. Efficient, Parallel At-Scale Correlation Analysis for Atom Probe Tomography on Hybrid Architectures, Hao Lu, Sudip K. Seal, Gregory Muzyn, Wei Guo, and Jonathan D. Poplawsky, Proc. of the Intl. Parallel & Distributed Processing Symposium (IPDPS), (2018).
  2. 3D Equilibrium Reconstruction with Islands, Mark R. Cianciosa, Steven P. Hirshman, Sudip K. Seal and Morgan Shafer, Plasma Physics and Controlled Fusion, 60 (4), 044017, (2018).
  3. Use of Reconstructed 3D Equilibria to Determine Onset Conditions of Helical Cores in Tokamaks for Extrapolation to ITER, Andreas Wingen, Robert S. Wilcox, Sudip K. Seal, Ezekial A. Unterberg, Mark R. Cianciosa, L. F. Delagado-Aparicio, Stven P. Hirshman and L. Lao, Nuclear Fusion, 58 (3), 036004, (2018).
  4. Spherical Region Queries on Multicore ArchitecturesHao Lu, Sudip K. Seal, Wei Guo, and Jonathan D. Poplawsky, Procs. of the 7th Workshop on Irregular Applications: Architectures and Algorithms (IA3'17), Supercomputing, Article 9, 4 pages, (2017).
  5. Reconstruction of Three Dimensional Magnetohydrodynamic Equilibria in Plasma Confinement Devices, Sudip K. Seal, Mark R. Cianciosa, Steven P. Hirshman, Andreas Wingen, Robert S. Wilcox and Ezekial A. Unterberg, Intl. Conf. of Parallel Processing (ICPP), pages 283-291, (2017).
  6. Helical Core Reconstructions of a DIII-D Hybrid Scenario, Advanced Tokamak Discharge, Mark R. Cianciosa, Andreas Wingen, Steven P. Hirshman, Sudip K. Seal, Ezekial A. Unterberg, Robert S. Wilcox, O. Piovesan, L. Lao and F. Turco, Nuclear Fusion, (2017).
  7. Space Dependent, Full Orbit Effects on Runaway Electron Dynamics in Tokamak Plasmas, Leopoldo Carbajal Gomez, Diego del-Castillo-Negrete, Donald A. Spong and Larry R. Baylor, Physics of Plasmas, 24, 042512 (14pp), (2017).
  8. PARVMEC: An Efficient, Scalable Implementation of the Variational Moments Equilibrium CodeSudip K. Seal, Steven P. Hirshman, Andreas Wingen, Robert S. Wilcox, Mark R. Cianciosa and Ezekial A. Unterberg, Intl. Conf. of Parallel Processing (ICPP), pages 618-627, (2016) (acceptance rate 21.1%, 53/251) (Runner-up Best Paper).
  9. Use of Reconstructed 3-D VMEC Equilibria to Match Effects of Toroidally Rotating Discharges in DIII-D, Andreas Wingen, Robert J. Wilcox, Mark R. Cianciosa, Sudip K. Seal, Ezekial A. Unterberg, Jim Hanson, Steven P. Hirshman, L. Lao, Nikolas Logan, Carlos Paz-Soldan and Morgan Shafer, Nuclear Fusion, 57 (1), 016013, (2016).
  10. VMEC Modeling of 3D Magnetic Geometric Effects on Transport Near Rational Surfaces during RMP ELM Suppression in DIII-DRobert S. Wilcox, Andreas Wingen, Morgan W. Shafer, Ezekial A. Unterberg, Mark R. Cianciosa, Steven P. Hirshman and Sudip K. Seal, Procs. of the European Physical Society (EPS), (2016).
  11. Reconstruction of 3-D VMEC equilibria with helical cores in DIII-DAndreas Wingen, Robert S. Wilcox, Mark R. Cianciosa, Sudip K. Seal, Ezekial A. Unterberg, Steven P. Hirshman, Paolo Piovesan and Francesca Turco, Procs. of the European Physical Society (EPS), (2016).
  12. A Novel Scalable Model for Simulating Explosive Blast PropagationJames Nutaro,  Sudip K. Seal and David Sulfredge, Winter Simulation Conference (WSC), (2016).
  13. Investigation of Island Formation Due to RMPs in DIII-D Plasmas with the SIESTA Resistive MHD Equilibrium Code, Steven P. Hirshman, Morgan Shafer, Sudip K. Seal and John Canik, Journal of Plasma Physics, 82(2), (2016) (Featured Article).
  14. Connection Between Plasma Response and Magnetic Perturbation(RMP) Edge Localized Mode (ELM) Suppression in DIII-D, Andreas Wingen, N. M. Ferraro, Morgan W. Shafer, Ezekial A. Unterberg, John Canik, T. E. Evans, Donald Lee Hillis, Steven P. Hirshman, Sudip K. Seal, P. B. Snyder and Aaron C. Sontag, Plasma Physics and Controlled Fusion, 57(10), pages 104006-104014, (2015).
  15. An Accelerated Recursive Doubling Algorithm for Block Tridiagonal Systems, Sudip K. Seal, Proc. of the Intl. Parallel & Distributed Processing Symposium (IPDPS), pages 1019-1028, (2014) (acceptance rate 21.1%, 114/541).
  16. Nanoscale Cluster Detection in Massive Atom Probe Microscopy Data, Sudip K. Seal, Srikanth B. Yoginath and Michael K. Miller, Proc. of the Workshop on Parallel and Distributed Scientific and Engineering Computing (IPDPSW), pages 1179-1188, (2014) (acceptance rate 38.1%, 16/42).
  17. Revisiting Cyclic Reduction and Parallel Prefix-based Algorithms for Block Tridiagonal Systems of Equations, Sudip K. Seal, Kalyan S. Perumalla and Steven P. Hirshman, Journal of Parallel and Distributed Computing, 73(2), pages 273-280, (2013).
  18. Scaling the SIESTA Magnetohydrodynamics Equilibrium Code, Sudip K. Seal, Kalyan S. Perumalla and Steven P. Hirshman, Concurrency and Computation: Practice and Experience, 25(15), pages 2207-2223, (2013).
  19. Discrete Event Modeling and Massively Parallel Execution of Epidemic Outbreak Phenomena, Kalyan S. Perumalla and Sudip K. Seal, SIMULATION Transactions of The Society for Modeling and Simulation International, 88(7), pages 768-783, (2012).
  20. Interactive, GPU-based Evaluation of Evacuation Scenarios at State-Scale, Kalyan S. Perumalla, Brandon G. Aaby, Srikanth B. Yoginath and Sudip K. Seal, SIMULATION Transactions of The Society for Modeling and Simulation International, 88(6), pages 746-761, (2012).
  21. Reversible Parallel Discrete Event Formulation of a TLM-based Radio Signal Propagation Model, Sudip K. Seal and Kalyan S. Perumalla, ACM Transactions on Modeling and Computer Simulations, 22 (1), (2011).
  22. A Scalable Parallel Wideband MLFMA for Efficient Electromagnetoc Simulations on Large Scale Clusters, Vikram Melapudi, Balasubrmaniam Shanker, Sudip K. Seal and Srinivas Aluru, IEEE Transactions of Antennae and Propagation,  59 (7), pages 2565 - 2577 (2011).
  23. Reversible Parallel Discrete-Event Execution of Large-scale Epidemic Outbreak Models, Kalyan S. Perumalla and Sudip K. Seal, Proc. of the Workshop on Principles of Advanced and Distributed Simulations (PADS), pages 106 - 113 (2010) (acceptance rate 52.9%, 18/34) (Best Paper Finalist).
  24. Efficient Simulation of Agent-Based Models on GPU and Multi-Core Clusters, Brandon G. Aaby, Kalyan S. Perumalla and Sudip K. Seal, Proc. of Intl. Conf. on Simulation Tools and Techniques, (2010) (acceptance rate 27.4%, 20/73) (Best Paper Finalist).
  25. Scalable Parallel Execution of an Event-based Radio Signal Propagation Model for Cluttered 3D Terrains, Sudip K. Seal and Kalyan S. Perumalla, Proc. of Intl. Conf. of Parallel Processing (ICPP), pages 534 - 541 (2009) (acceptance rate 32.3%, 71/220).
  26. GPU-based Real-Time Execution of Vehicular Mobility Models in Large-Scale Road Network Scenarios, Kalyan S. Perumalla, Brandon G. Aaby, Srikanth B. Yoginath and Sudip K. Seal, Proc. of the Workshop on Principles of Advanced and Distributed Simulations (PADS), pages 95 - 103 (2009) (acceptance rate ∼ 51.5%).
  27. Spatial Domain Decomposition Methods in Parallel Scientific Computing, Sudip K. Seal and Srinivas Aluru, Handbook of Parallel Computing: Models, Algorithms and Applications, Chapman and Hall/CRC Computer & Information Science Series (2008).
  28. Tracking Nanostructural Evolution in Alloys: Large-scale Analysis of Atom Probe Tomography Data on Blue Gene/L, Sudip K. Seal, Michael Moody, Anna Ceguerra, Simon Ringer, Krishna Rajan and Srinivas Aluru, Proc. of Intl. Conf. of Parallel Processing (ICPP), pages 338 - 345 (2008) (acceptance rate 30.8%, 81/263).
  29. Communication-aware Parallel Domain Decomposition using Space Filling Curves, Sudip K. Seal and Srinivas Aluru, Proc. Parallel and Distributed Computing Symposium (ISCA), pages 159 - 164 (2006) (acceptance rate ∼ 50.0%).
  30. Formal Analysis of Space Filling Curves for Parallel Domain Decomposition, Srikanta Tirthapura, Sudip K. Seal and Srinivas Aluru, Proc. of Intl. Conf. of Parallel Processing (ICPP), pages 505 - 512 (2006) (acceptance rate 32.0%, 64/200).
  31. An Optimal Hierarchical Clustering Algorithm for Gene Expression Data, Sudip K. Seal, Srikanth Komarina and Srinivas Aluru, Information Processing Letters, 93(3), pages 143 - 147 (2005).
  32. An Approximate Light Cone Method to Investigate Meson Structure, Matthias Burkardt and Sudip K. Seal, Phenomenology of Large Nc QCD, World Scientific, pages 151-155 (2002).
  33. B-mesons on the Transverse Lattice, Matthias Burkardt and Sudip K. Seal, Nuclear Physics Proceedings Supplement,108, pages 148-152 (2002).
  34. A Study of Heavy Light Mesons on the Transverse Lattice, Matthias Burkardt and Sudip K. Seal, Physical Review D (Rapid Communications), 64, page 111501 (2001).
  35. A Study of Light Mesons on the Transverse Lattice, Matthias Burkardt and Sudip K. Seal, Physical Review D, 65, page 034501 (2001).
  36. Mesons on the Transverse Lattice, Matthias Burkardt and Sudip K. Seal, Nuclear Physics Proceedings Supplement, 90, pages 233-235 (2000).
  37. QCD on the Transverse Lattice, Matthias Burkardt and Sudip K. Seal, Particle Physics Phenomenology, World Scientific, pages 141-150 (2000).

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