34 citations · 38 across the 4 of their papers we have counts for
4 papers
Statistical reduced order modelling for the parametric Helmholtz equation
Lucas Hermann, Matthias Bollhöfer, Ulrich Römer
Predictive modeling involving simulation and sensor data at the same time, is a growing challenge in computational science. Even with large-scale finite element models, a mismatch…
High Performance Block Incomplete LU Factorization
Matthias Bollhöfer, Olaf Schenk, Fabio Verbosio
Many application problems that lead to solving linear systems make use of preconditioned Krylov subspace solvers to compute their solution. Among the most popular preconditioning a…
State-of-The-Art Sparse Direct Solvers
Matthias Bollhöfer, Olaf Schenk, Radim Janalík +2
In this chapter we will give an insight into modern sparse elimination methods. These are driven by a preprocessing phase based on combinatorial algorithms which improve diagonal d…
On Large Scale Diagonalization Techniques for the Anderson Model of Localization
Olaf Schenk, Matthias Bollhoefer, Rudolf A. Roemer
We propose efficient preconditioning algorithms for an eigenvalue problem arising in quantum physics, namely the computation of a few interior eigenvalues and their associated eige…