Publications
Accelerating Geostatistical Modeling and Prediction With Mixed-Precision Computations: A High-Productivity Approach With PaRSEC,”
IEEE Transactions on Parallel and Distributed Systems, vol. 33, issue 4, pp. 964 - 976, April 2022.
DOI: 10.1109/TPDS.2021.3084071
“Analysis of the Communication and Computation Cost of FFT Libraries towards Exascale,”
ICL Technical Report, no. ICL-UT-22-07: Innovative Computing Laboratory, July 2022.
(5.91 MB)
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Communication Avoiding LU with Tournament Pivoting in SLATE,”
SLATE Working Notes, no. 18, ICL-UT-22-01, January 2022.
(3.74 MB)
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Evaluating Data Redistribution in PaRSEC,”
IEEE Transactions on Parallel and Distributed Systems, vol. 33, no. 8, pp. 1856-1872, 2022.
DOI: 10.1109/TPDS.2021.3131657
(3.19 MB)
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FFT Benchmark Performance Experiments on Systems Targeting Exascale,”
ICL Technical Report, no. ICL-UT-22-02, March 2022.
(5.87 MB)
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A Framework to Exploit Data Sparsity in Tile Low-Rank Cholesky Factorization,”
IEEE International Parallel and Distributed Processing Symposium (IPDPS), 2022.
(1.03 MB)
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Mixed precision and approximate 3D FFTs: Speed for accuracy trade-off with GPU-aware MPI and run-time data compression,”
ICL Technical Report, no. ICL-UT-22-04, May 2022.
(706.14 KB)
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PAQR: Pivoting Avoiding QR factorization,”
ICL Technical Report, no. ICL-UT-22-06, June 2022.
(364.85 KB)
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Reinventing High Performance Computing: Challenges and Opportunities,”
ICL Technical Report, no. ICL-UT-22-03, March 2022.
(1.36 MB)
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20 years of computational science: Selected papers from 2020 International Conference on Computational Science,”
Journal of Computational Science, vol. 53, pp. 101395–101395, 2021.
DOI: 10.1016/j.jocs.2021.101395
“Accelerating FFT towards Exascale Computing
: NVIDIA GPU Technology Conference (GTC2021), 2021.
(27.23 MB)

Accelerating Restarted GMRES with Mixed Precision Arithmetic,”
IEEE Transactions on Parallel and Distributed Systems, June 2021.
DOI: 10.1109/TPDS.2021.3090757
(572.4 KB)
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Distributed-Memory Multi-GPU Block-Sparse Tensor Contraction for Electronic Structure,”
35th IEEE International Parallel & Distributed Processing Symposium (IPDPS 2021), Portland, OR, IEEE, May 2021.
“DTE: PaRSEC Enabled Libraries and Applications
: 2021 Exascale Computing Project Annual Meeting, April 2021.
(3.24 MB)

Efficient exascale discretizations: High-order finite element methods,”
The International Journal of High Performance Computing Applications, pp. 10943420211020803, 2021.
DOI: 10.1177/10943420211020803
“Exploiting Block Structures of KKT Matrices for Efficient Solution of Convex Optimization Problems,”
IEEE Access, 2021.
DOI: 10.1109/ACCESS.2021.3106054
(1.35 MB)
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Interim Report on Benchmarking FFT Libraries on High Performance Systems,”
Innovative Computing Laboratory Technical Report, no. ICL-UT-21-03: University of Tennessee, July 2021.
(2.68 MB)
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An Introduction to High Performance Computing and Its Intersection with Advances in Modeling Rare Earth Elements and Actinides,”
Rare Earth Elements and Actinides: Progress in Computational Science Applications, vol. 1388, Washington, DC, American Chemical Society, pp. 3-53, October 2021.
DOI: 10.1021/bk-2021-1388.ch001
“Leveraging PaRSEC Runtime Support to Tackle Challenging 3D Data-Sparse Matrix Problems,”
35th IEEE International Parallel & Distributed Processing Symposium (IPDPS 2021), Portland, OR, IEEE, May 2021.
(1.08 MB)
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Mixed-Precision Algorithm for Finding Selected Eigenvalues and Eigenvectors of Symmetric and Hermitian Matrices,”
ICL Technical Report, no. ICL-UT-21-05, August 2021.
(3.93 MB)
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A More Portable HeFFTe: Implementing a Fallback Algorithm for Scalable Fourier Transforms,”
ICL Technical Report, no. ICL-UT-21-04: University of Tennessee, August 2021.
(493.17 KB)
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Revisiting Credit Distribution Algorithms for Distributed Termination Detection,”
2021 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW): IEEE, pp. 611–620, 2021.
DOI: 10.1109/IPDPSW52791.2021.00095
“Scalability Issues in FFT Computation,”
International Conference on Parallel Computing Technologies: Springer, pp. 279–287, 2021.
DOI: 10.1007/978-3-030-86359-3_21
“A Set of Batched Basic Linear Algebra Subprograms and LAPACK Routines,”
ACM Transactions on Mathematical Software (TOMS), vol. 47, no. 3, pp. 1–23, 2021.
DOI: 10.1145/3431921
“SLATE Performance Improvements: QR and Eigenvalues,”
SLATE Working Notes, no. 17, ICL-UT-21-02, April 2021.
(2 MB)
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SLATE Port to AMD and Intel Platforms,”
SLATE Working Notes, no. 16, ICL-UT-21-01, April 2021.
(890.75 KB)
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A survey of numerical linear algebra methods utilizing mixed-precision arithmetic,”
The International Journal of High Performance Computing Applications, vol. 35, no. 4, pp. 344–369, 2021.
DOI: 10.1177/10943420211003313
“Translational process: Mathematical software perspective,”
Journal of Computational Science, vol. 52, pp. 101216, 2021.
DOI: 10.1016/j.jocs.2020.101216
“ASCR@40: Four Decades of Department of Energy Leadership in Advanced Scientific Computing Research
: Advanced Scientific Computing Advisory Committee (ASCAC), US Department of Energy, August 2020.
ASCR@40: Highlights and Impacts of ASCR’s Programs
: US Department of Energy’s Office of Advanced Scientific Computing Research, June 2020.
DOI: 10.2172/1631812
Asynchronous SGD for DNN Training on Shared-Memory Parallel Architectures,”
Innovative Computing Laboratory Technical Report, no. ICL-UT-20-04: University of Tennessee, Knoxville, March 2020.
(188.51 KB)
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Asynchronous SGD for DNN Training on Shared-Memory Parallel Architectures,”
Workshop on Scalable Deep Learning over Parallel And Distributed Infrastructures (ScaDL 2020), May 2020.
(188.51 KB)
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CEED ECP Milestone Report: Improve Performance and Capabilities of CEED-Enabled ECP Applications on Summit/Sierra,”
ECP Milestone Reports: Zenodo, May 2020.
DOI: 10.5281/zenodo.3860804
(28.12 MB)
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Clover: Computational Libraries Optimized via Exascale Research
, Houston, TX, 2020 Exascale Computing Project Annual Meeting, February 2020.
(872 KB)

Communication Avoiding 2D Stencil Implementations over PaRSEC Task-Based Runtime,”
2020 IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW), New Orleans, LA, IEEE, May 2020.
DOI: 10.1109/IPDPSW50202.2020.00127
(1.33 MB)
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Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part I,”
Lecture Notes in Computer Science, 1, no. 12137: Springer International Publishing, pp. 707, June 2020.
DOI: 10.1007/978-3-030-50371-0
“Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part VI,”
Lecture Notes in Computer Science, 1, no. 12142: Springer International Publishing, pp. 667, June 2020.
DOI: 10.1007/978-3-030-50433-5
“Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part V,”
Lecture Notes in Computer Science, 1, no. 12141: Springer International Publishing, pp. 618, June 2020.
DOI: 10.1007/978-3-030-50426-7
“Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part IV,”
Lecture Notes in Computer Science, 1, no. 12140: Springer International Publishing, pp. 668, June 2020.
DOI: 10.1007/978-3-030-50423-6
“Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part III,”
Lecture Notes in Computer Science, 1, no. 12139: Springer International Publishing, pp. 648, June 2020.
DOI: 10.1007/978-3-030-50420-5
“Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part II,”
Lecture Notes in Computer Science, 1, no. 12138: Springer International Publishing, pp. 697, June 2020.
DOI: 10.1007/978-3-030-50417-5
“Computational Science – ICCS 2020: 20th International Conference, Amsterdam, The Netherlands, June 3–5, 2020, Proceedings, Part VII,”
Lecture Notes in Computer Science, 1, no. 12143: Springer International Publishing, pp. 775, June 2020.
DOI: 10.1007/978-3-030-50436-6
“Design, Optimization, and Benchmarking of Dense Linear Algebra Algorithms on AMD GPUs,”
2020 IEEE High Performance Extreme Computing Virtual Conference: IEEE, September 2020.
(476.36 KB)
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Design, Optimization, and Benchmarking of Dense Linear Algebra Algorithms on AMD GPUs,”
Innovative Computing Laboratory Technical Report, no. ICL-UT-20-12: University of Tennessee, August 2020.
(476.36 KB)
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DTE: PaRSEC Enabled Libraries and Applications (Poster)
, Houston, TX, 2020 Exascale Computing Project Annual Meeting, February 2020.
(979.27 KB)

DTE: PaRSEC Systems and Interfaces (Poster)
, Houston, TX, 2020 Exascale Computing Project Annual Meeting, February 2020.
(840.54 KB)

Evaluating the Performance of NVIDIA’s A100 Ampere GPU for Sparse and Batched Computations,”
2020 IEEE/ACM Workshop on Performance Modeling, Benchmarking and Simulation of High Performance Computer Systems (PMBS): IEEE, November 2020.
(1.9 MB)
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Exa-PAPI: The Exascale Performance API with Modern C++
, Houston, TX, 2020 Exascale Computing Project Annual Meeting, February 2020.
(556.78 KB)

Extreme-Scale Task-Based Cholesky Factorization Toward Climate and Weather Prediction Applications,”
Platform for Advanced Scientific Computing Conference (PASC20), Geneva, Switzerland, ACM, June 2020.
DOI: 10.1145/3394277.3401846
(2.71 MB)
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FFT-ECP API and High-Performance Library Prototype for 2-D and 3-D FFTs on Large-Scale Heterogeneous Systems with GPUs,”
ECP Milestone Report, no. FFT-ECP STML13-27: Innovative Computing Laboratory, University of Tennessee, January 2020.
(9.71 MB)
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