Search Results for author: David Keyes

Found 4 papers, 3 papers with code

PETScML: Second-order solvers for training regression problems in Scientific Machine Learning

no code implementations18 Mar 2024 Stefano Zampini, Umberto Zerbinati, George Turkiyyah, David Keyes

In recent years, we have witnessed the emergence of scientific machine learning as a data-driven tool for the analysis, by means of deep-learning techniques, of data produced by computational science and engineering applications.

regression

Extreme Scale FMM-Accelerated Boundary Integral Equation Solver for Wave Scattering

1 code implementation27 Mar 2018 Mustafa Abduljabbar, Mohammed Al Farhan, Noha Al-Harthi, Rui Chen, Rio Yokota, Hakan Bagci, David Keyes

With distributed memory optimizations, on the other hand, we report near-optimal efficiency in the weak scalability study with respect to both the logarithmic communication complexity as well as the theoretical scaling complexity of FMM.

Performance Computational Engineering, Finance, and Science Mathematical Software

Likelihood Approximation With Hierarchical Matrices For Large Spatial Datasets

2 code implementations8 Sep 2017 Alexander Litvinenko, Ying Sun, Marc G. Genton, David Keyes

We use available measurements to estimate the unknown parameters (variance, smoothness parameter, and covariance length) of a covariance function by maximizing the joint Gaussian log-likelihood function.

Computation 62F99, 62P12, 62M30 G.3; G.4; J.2

Asynchronous Execution of the Fast Multipole Method Using Charm++

1 code implementation29 May 2014 Mustafa AbdulJabbar, Rio Yokota, David Keyes

Fast multipole methods (FMM) on distributed mem- ory have traditionally used a bulk-synchronous model of com- municating the local essential tree (LET) and overlapping it with computation of the local data.

Distributed, Parallel, and Cluster Computing 70F10 D.1.2; D.1.3; G.1.0; G.1.2

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