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![Variational Generative Flows for Reconstruction Uncertainty Estimation CSMD Computer Science and Mathematics Division ORNL](/sites/default/files/styles/list_page_thumbnail/public/2022-07/variational_generative_flows_for_reconstruction_uncertainty_estimation.png?h=429f3186&itok=Hhws1ahJ)
A research team from ORNL and Pacific Northwest National Laboratory has developed a deep variational framework to learn an approximate posterior for uncertainty quantification.
![The architecture of the Plexus resilient runtime system interfacing with programming model runtimes, libraries, system monitoring, and job and resource management. Computer Science and Mathematics Division CSMD ORNL](/sites/default/files/styles/list_page_thumbnail/public/2021-05/plexus-_a_pattern-oriented_runtime_system_architecture_for_resilient_extreme-scale_high-performance_computing_systems.png?h=8bd7d9f2&itok=AhEKp7Fp)
A team of researchers from Oak Ridge National Laboratory (ORNL) designed, implemented, and evaluated a high-performance computing (HPC) runtime system.
![(a) Overview of the new approach. (b) Comparison of EONS and proposed method on cart pole balancing task. Lines show average max fitness value at each epoch over ten evolutionary runs for each algorithm. Shaded areas show the one standard deviation range for the max fitness values across multiple evolutionary runs at each epoch. Computer Science and Mathematics Division CSMD ORNL](/sites/default/files/styles/list_page_thumbnail/public/2021-05/neuroevolution_of_spiking_neural_networks_using_compositional_pattern_producing_networks.png?h=23c51eb9&itok=lE83UYyn)
Researchers from Oak Ridge National Laboratory and the University of Central Florida have extended an evolutionary approach for training spiking neural networks.
![Relative Failure Hazards depend on scheduling (via X torus coordinate) and location (via col, row, cage, and node) due to heat generation and architecture of air transport heat dissipation. Fill-in scheduling and distance from cool air increase failure hazard. Computer Science and Mathematics Division CSMD ORNL](/sites/default/files/styles/list_page_thumbnail/public/2021-05/gpu_lifetimes_on_titan_supercomputer-_survival_analysis_and_reliability.png?h=452a48d2&itok=sfaD_mLZ)
A team of researchers from Oak Ridge National Laboratory applied advanced statistical methods from biomedical research to study an unexpected failure mode of general-purpose computing on graphics processing units (GPGPUs).
![Overview of the 3D Coded SUMMA (left) and comparison of the total execution time between 3D SUMMA (no resilience), replication, and 3D Coded SUMMA. Computer Science and Mathematics Division CSMD ORNL](/sites/default/files/styles/list_page_thumbnail/public/2021-05/3d_coded_summa-_communication-efficient_and_robust_parallel_matrix_multiplication.png?h=b840d857&itok=ybDQ0PrM)
Researchers developed a novel algorithm for resilient and communication-efficient parallel matrix multiplication in HPC systems.
![Default image of ORNL entry sign](/sites/default/files/styles/list_page_thumbnail/public/2023-09/default-thumbnail.jpg?h=553c93cc&itok=N_Kd1DVR)