Kalyan Perumalla is the Founder and President of Discrete Computing, Inc specializing in advanced computing solutions.
He was previously a Distinguished Research Staff Member (elevated to Band 5 in 2014) at the Oak Ridge National Laboratory (ORNL), a US Department of Energy laboratory, in the Computer Science and Mathematics Division.
His additional appointments include serving as Joint Full Professor in the School of Industrial and Systems Engineering at the University of Tennessee, Knoxville, as Adjunct Professor in the School of Computational Sciences and Engineering at the Georgia Institute of Technology, and as Adjunct Professor in the Department of Electrical and Computer Engineering at the University of Nebraska-Lincoln. He also serves on the Special Interest Group Governing Board of the Association for Computing Machinery (ACM) as the elected chair for ACM Special Interest Group in Simulation (SIGSIM).
Prior to his 17-year career at ORNL, he held full-time research faculty appointments for 8 years at the Georgia Institute of Technology. Among other notable engagements, he served as Fellow of the Institute of Advanced Study at Durham University, UK, and as member of the National Academies’ Technical Advisory Boards for the U.S. Army Research Laboratory.
Education
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PhD, Computer Science, 1999
Georgia Institute of Technology, Atlanta, GA, USA
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MS, Computer Science, 1993
University of Central Florida, Orlando, FL, USA
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BE, Mechanical Engineering, 1991
Osmania University, Hyderabad, India
Latest
- ExaSGD Performance Profiling
- Design of a Novel Information System for Semi-Automated Management of Cybersecurity in Industrial Control Systems
- An Accuracy-Maximization Approach for Claims Classifiers in Document Content Analytics for Cybersecurity
- Computer Science Research Needs for Parallel Discrete Event Simulation (PDES)
- Extending the Naming Game in Social Networks to Multiple Hearers per Speaker
- ZeroIn: Characterizing the Data Distributions of Commits in Software Repositories
- Using Machine Learning Towards Early Flagging of Potentially Buggy Software Commits
- DarkNet Cyber Resilience
- Entropy Journal Special Issue
- PADS'22 Call for Papers
- SIGSIM Members/Business Meeting
- Characterizing the Distributions of Commits in Large Source Code Repositories
- CyBERT: Cybersecurity Claim Classification by Fine-Tuning the BERT Language Model
- Fast GPU-Based Generation of Large Graph Networks From Degree Distributions
- Design Considerations for GPU-based Mixed Integer Programming on Parallel Computing Platforms
- Mesoscopic Modeling and Rapid Simulation of Incremental Changes in Epidemic Scenarios on GPUs: Fast What–If Analyses of Localized and Dynamic Effects
- A Case Study in Simulation Methods for Power Electronic Circuits
- On Some Confluences of Computing and Security in Theory and Practice
- Trust-but-Verify in Cyber-Physical Systems
- Trust-but-Verify in Cyber-Physical Systems
- Smart Semi-Supervised Accumulation of Large Repositories for Industrial Control Systems Device Information
- R&D Needs for Digital Twins
- Scale-Free Graph Networks with Trillions of Edges: Rapid Generation using 1000 GPUs
- Next in Reversible Computing: Breaking the Memory-Computation Asymmetry
- On the Robustness of Network Community Structure Under Addition of Edges
- A Novel Vetting Approach to Cybersecurity Verification in Energy Grid Systems
- Generating Massive Scale-free Networks: Novel Parallel Algorithms using the Preferential Attachment Model
- COVID-relevant Scalable Computational Research Directions and Tools
- RL-HEMS: Reinforcement Learning-Based Home Energy Management System for HVAC Energy Optimization (OR-20-C051)
- A Digital Twin Framework for Testing, Evaluation and Deployment of Resilient Cyber-physical Systems
- RL-HEMS: Reinforcement Learning Based Home Energy Management System for HVAC Energy Optimization.
- Kensor: Coordinated Intelligence from Co-Located Sensors
- Energy Conservation Through Cloned Execution Of Simulations
- On the Effectiveness of Recurrent Neural Networks for Live Modeling of Cyber-Physical Systems
- Detecting Sensors and Inferring their Relations at Level-0 in Industrial Cyber-Physical Systems
- Volatile Memory Extraction-Based Approach for Level 0-1 CPS Forensics
- Exact-Differential Simulation: Differential Processing of Large-Scale Discrete Event Simulations
- Towards Native Execution of Deep Learning on a Leadership-Class HPC System
- Novel Parallel Algorithms for Fast Multi-GPU-Based Generation of Massive Scale-Free Networks
- Normalcy, Magic, Miracle and Error: Emergence along a Reversibility Spectrum
- An Agent-based Model of the Observed Distribution of Wealth in the United States
- Efficient reversible uniform and non-uniform random number generation in UNU.RAN
- Scalable Cloning on Large-Scale GPU Platforms with Application to Time-Stepped Simulations on Grids
- GPU-based parallel algorithm for generating massive scale-free networks using the preferential attachment model
- Concurrent conversation modeling and parallel simulation of the naming game in social networks
- Generating Billion-Edge Scale-Free Networks in Seconds: Performance Study of a Novel GPU-based Preferential Attachment Model
- Design exploration of a Symmetric Pass Gate Adiabatic Logic for energy-efficient and secure hardware
- Efficient Simulation of Nested Hollow Sphere Intersections: for Dynamically Nested Compartmental Models in Cell Biology
- Computational Speed and Matching Quality using an Upper Bound on the Normalized Mutual Information
- Computing a Non-trivial Lower Bound on the Joint Entropy between Two Images
- Performance of Point and Range Queries for In-memory Databases Using Radix Trees on GPUs
- Model-based Dynamic Control of Speculative Forays in Parallel Computation
- Energy-Efficient and Secure S-Box Circuit Using Symmetric Pass Gate Adiabatic Logic
- Model-based Dynamic Control of Speculative Forays in Parallel Computation
- On the Definability of Art
- Efficient Parallel Discrete Event Simulation on Cloud/Virtual Machine Platforms
- Design of A High-Fidelity Testing Framework for Secure Electric Grid Control
- Discrete Event Execution with One-Sided and Two-Sided GVT Algorithms on 216,000 Processor Cores
- Introduction to Reversible Computing
- Parallel Discrete Event Simulation
- Parallel Discrete Event Simulation using Supercomputers, Cloud/VM, and Accelerators
- Reverse Computation for Rollback-based Fault Tolerance in Large Parallel Systems
- Simulating Billion-Task Parallel Programs
- Towards Reversible Basic Linear Algebra Subprograms: A Performance Study
- Virtual Machine-Based Simulation Platform For MANET-Based Cyber Infrastructure
- Interfacing JavaScript and MPI
- Reversibly Finding the Square Root of an Integer
- Efficient Heterogeneous Execution on Large Multicore and Accelerator Platforms: Case Study Using a Block Tridiagonal Solver
- Empirical Evaluation of PDES Execution on Cloud and Virtual Machine Platforms
- Improved Parallelization of the SIESTA Magneto-hydrodynamic Equilibrium Code Using Cyclic Reduction
- Introduction to Reversible Computing
- Optimized Hypervisor Scheduler for Parallel Discrete Event Simulations on Virtual Machine Platforms
- Reversible Simulations of Elastic Collisions
- Reversible Simulations of Elastic Collisions (Extended arXiv version)
- Revisiting Cyclic Reduction and Parallel Prefix-Based Algorithms for Tri-diagonal Systems of Equations
- Discrete Event Execution and Reversibility: Challenges in the Path to Asynchrony for Massively Parallel Computing
- Discrete Event Modeling and Massively Parallel Execution of Epidemic Outbreak Phenomena
- Parallel Simulation on Supercomputers
- ReveR-SES: Reversible Software Execution Systems
- Runtime Performance And Virtual Network Control Alternatives In VM-Based High-Fidelity Network Simulations
- Scaling Optimization of the SIESTA MHD Code
- Scaling the SIESTA Magnetohydrodynamics Equilibrium Code
- Taming Wild Horses: The Need for Virtual Time-based Scheduling of VMs in Network Simulations
- Towards Highly Interactive, GPU-based Evaluation of Evacuation Transport Scenarios at State-Scale
- Efficiently Scheduling Multi-core Guest Virtual Machines on Multi-core Hosts in Network Simulation
- GVT Algorithms and Discrete Event Dynamics on 129K+ Processor Cores
- Improved Parallelization of the SIESTA Magneto-hydrodynamic Equilibrium Code Using Cyclic Reduction
- Improving Multi-Million Virtual Rank MPI Execution in MUPI
- ReveR-SES: Reversible Software Execution Systems
- Reversible Parallel Discrete Event Formulation of a TLM-based Radio Signal Propagation Model
- Towards High Performance Discrete Event Simulations of Smart Electric Grids
- µπ: A Scalable and Transparent System for Simulating MPI Programs
- An Incremental Parallelization Approach Applied to the ORNL/NRC FAVOR Code
- Bcyclic: A Parallel Block Tri-diagonal Matrix Cyclic Solver
- Compiler-based Automation Approaches to Reverse Computation
- Efficient Simulation of Agent-Based Models on Multi-GPU and Multi-Core Clusters
- High-Performance Simulations for Capturing Feedback and Fidelity in Complex Networked Systems
- On Deciding between Conservative and Optimistic Approaches on Massively Parallel Platforms
- Reversible Parallel Discrete-Event Execution of Large-scale Epidemic Outbreak Models
- Supercomputing Applications of the Other Kind: Real-time Parallel Discrete Event Simulations of Large-scale, Smart Infrastructures
- Towards Highly Interactive, GPU-based Evaluation of Evacuation Transport Scenarios at State-Scale
- A Connectionist Modeling Approach to Rapid Analysis of Emergent Social Cognition Properties in Large-Populations
- Computational Spectrum of Agent Model Simulation
- Coping at the User-Level with Resource Limitations in the Cray Message Passing Toolkit MPI at Scale: How Not to Spend Your Summer Vacation
- Cyber Security Experimentation: Gory Detail or None at All?
- GPU-based Real-Time Execution of Vehicular Mobility Models in Large-Scale Road Network Scenarios
- Introduction to Simulations on GPUs
- Perfect Reversal of Rejection Sampling Methods for First-Passage-Time and Similar Probability Distributions
- Reversible Discrete Event Formulation and Optimistic Parallel Execution of Vehicular Traffic Models
- Scalable Parallel Execution of an Event-based Radio Signal Propagation Model for Cluttered 3D Terrains
- Scalable Parallel Execution of an Event-based Radio Signal Propagation Model for Cluttered 3D Terrains
- Switching to High Gear: Opportunities for Grand-scale Real-time Parallel Simulations
- Switching to High Gear: Opportunities for Grand-scale Real-time Parallel Simulations
- Data Parallel Execution Challenges and Runtime Performance of Agent Simulations on GPUs
- Efficient Execution on GPUs of Field-based Vehicular Mobility Models
- Feasibility, Efficiency and Limits of Compiler-based Automation for Reversibility of Codes
- High Performance Computing-based Experimentation for Cyber Infrastructure and Security
- On the Reversibility of Newton-Raphson Root-Finding Method
- Parallel Vehicular Traffic Simulations using Reverse Computation-based Optimistic Execution
- A Case Study of Efficient Social Network Simulation through General Processing on Graphics Processing Units (GPGPUs)
- A Case Study of the Performance of Speculative Asynchronous Simulation on Parallel Computers
- A New Methodology for Multi-scale Simulation of Plasmas
- A New Methodology for Multi-scale Simulation of Plasmas
- An Analysis Approach to Large-Scale Vehicular Network Simulations
- Application-Level Asynchronous Speculative Execution
- Efficient Parallel Execution of Event-Driven Electromagnetic Hybrid Models
- Handling Time Management under the HLA
- Model Execution
- Parallel and Distributed Simulation: Traditional Techniques and Recent Advances
- Scaling Time Warp-based Discrete Event Execution to 10^4 Processors on a Blue Gene Supercomputer
- Two Case Studies of Reversibility in Computational Methods
- A Systems Approach to Scalable Transportation Network Modeling
- Discrete-Event Execution Alternatives on GPGPUs
- Handling Time Management under the HLA
- Integrated Analysis of Environment-Driven Operational Effects in Sensor Networks
- Network Simulation
- On Accounting for the Interplay of Kinetic and Non-Kinetic Aspects of Population Mobility Models
- On Evaluation Needs of Real-life Sensor Network Deployments
- Optimistic Simulation of Physical Systems using Reverse Computation
- Parallel and Distributed Simulation: Traditional Techniques and Recent Advances
- Parallel and Distributed Simulation: Traditional Techniques and Recent Advances
- Parallel Execution of Region-Scale Evacuation Traffic Models
- Scalable Simulation of Electromagnetic Hybrid Codes
- µsik - A Micro-kernel for Parallel/Distributed Simulation Systems
- A New Methodology for Multi-scale Simulation of Plasmas
- A New Simulation Technique for Study of Collision-less Shocks: Self Adaptive Simulations
- Computational Methods for Efficient Large-scale System Models
- Computational Tools for Efficient Large-scale Discrete-Event Models
- Distributed Simulation Systems & the High Level Architecture (HLA)
- Optimistic Parallel Discrete Event Simulations of Physical Systems using Reverse Computation
- Parallel and Distributed Systems and the High-Level Architecture
- Parallel Discrete Event Simulations of Grid-based Models ? Asynchronous Electromagnetic Hybrid Code
- Performance Prediction of Large-scale Parallel Discrete Event Models of Physical Systems
- Virtual Simulator: An Infrastructure for Design and Performance-Prediction of Massively Parallel Codes
- A Federated Approach to Distributed Network Simulation
- A New Approach to Modeling Physical Systems: Discrete Event Simulations of Grid-based Models
- Conservative Synchronization of Large-scale Network Simulations
- Distributed Simulation Systems & the High Level Architecture (HLA)
- High Fidelity Modeling of Computer Network Worms
- Achieving Interoperability and Scalability in Simulation of Networks
- Generating Perfect Reversals of Simple Linear Codes
- Large-Scale Network Simulation - How Big? How Fast?
- Power-aware State Dissemination in Mobile Distributed Virtual Environments
- Scalable RTI-based Parallel Simulation of Networks
- Techniques for Improving Accuracy and Usability in Large-scale Network Emulation
- Experiences Applying Parallel and Interoperable Network Simulation Techniques in On-line Simulations of Military Networks
- Updateable Simulations
- Using Reverse Circuit Execution for Efficient Parallel Simulation of Logic Circuits
- Web Services for Extensible Modeling and Simulation
- Distributed Network Simulations using the Dynamic Simulation Backplane
- Interactive Parallel Simulations with the JANE Framework
- Virtual Time Synchronization over Unreliable Network Transport
- An Approach to Federating Parallel Simulators
- Design of High-performance RTI software
- Parallel Simulation Backplanes for Mixed Signal Circuit Design
- Using Reverse Computation towards Efficient Parallel/Distributed Computation
- Using Reverse Computation towards Efficient Parallel/Distributed Computation
- Efficient Optimistic Parallel Simulation using Reverse Computation
- Efficient Optimistic Parallel Simulations using Reverse Computation
- PARINO: A Parallel Branch and Cut Code
- Source Code Transformations for Efficient Reversibility
- The Effect of State Saving in Optimistic Simulation on a Cache-coherent Non-uniform Memory Access (CC-NUMA) Architecture
- The High Level Architecture for Simulation
- Efficient Large-scale Process-oriented Parallel Simulations
- Parallel Simulation Techniques for Large-scale Networks
- TeD - A Language for Modeling Telecommunication Networks
- TeD Models for ATM Internetworks
- Towards Reusable Modeling and Parallel Simulation of Telecommunication Networks
- A Virtual PNNI Network Testbed
- PARINO, A Parallel Integer Optimizer
- PARINO: An Extensible Framework for Solving Mixed Integer Programs in Parallel
- Reusable Modeling and Parallel Simulation of Networks using the TeD Language
- Time Parallel Generation of Self-similar ATM Traffic
- A C++ Instance of TeD
- An Efficiency Prediction Method for ATM Multiplexer
- GTW++ -- An Object Oriented Interface in C++ to the Georgia Tech Time Warp System
- MetaTeD - A Meta Language for Modeling Telecommunication Networks
- A Performance Prediction Method for ATM Multiplexers
- Parallel Algorithms for Maximum Sub-sequence and Sub-array
- Parallel Algorithms for Maximum Sub-sequence and Sub-array
- Parallelizing Sequential Algorithms for the Generalized Assignment Problem
- A Debugging Environment for PVM
- A Distributed Algorithm for Ear Decomposition
- Integrating Aggregate and Vehicle Level Simulations
- Integrating Battlefield Simulations of Different Granularity