Publications

• 
  Characterizing the Performance of Node-Aware Strategies for Irregular Point-to-Point Communication on Heterogeneous Architectures
  S. Lockhart, A. Bienz, W.D. Gropp, and L.N. Olson, Parallel Computing (Apr 2023) Paper
• 
  Performance Analysis and Optimal Node-Aware Communication for Enlarged Conjugate Gradient Methods
  S. Lockhart, A. Bienz, W.D. Gropp, and L.N. Olson, ACM Trans. on Parallel Computing, vol. 10, no. 1 (Mar 2023) Paper
• 
  Performance of Low Synchronization Orthogonalization Methods in Anderson Accelerated Fixed Point Solvers
  S. Lockhart, D.J. Gardner, C.S. Woodward, S. Thomas, and L.N. Olson, Proceedings of the 2022 SIAM Conference on Parallel Processing for Scientific Computing (2022) Paper
• 
  Modeling Data Movement Performance on Heterogeneous Architectures
  A. Bienz, L.N. Olson, W.D. Gropp, and S. Lockhart, 2021 IEEE High Performance Extreme Computing Conference (2021) Paper
• Preparation and Optimization of a Diverse Workload for a Large-Scale Heterogeneous System
  I. Karlin, Y. Park, et al. (including S. Lockhart), Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis (2019) Paper
• Limited-Memory Trust-Region Methods for Sparse Relaxation
  L. Adhikari, O. DeGuchy, J.B. Erway, S. Lockhart, and R.F. Marcia, Wavelets and Sparsity XV11 10394 (2017) Paper

PhD Dissertation

• Reducing Communication Bottlenecks in Iterative Solvers

  Thesis Manuscript