Advanced Computing Laboratory

Selected Publications


Refereed Journal Articles

L. Gaedke-Merzhäuser, J. Van Niekerk, O. Schenk, H. Rue
Parallelized integrated nested Laplace approximations for fast Bayesian inference
Statistics and Computing, December 2022, pages 1-20, , accepted, in press.
I. Horenko, E. Vecchi , J. Kardoš, O. Schenk, A. Waechter, T. O’Kane, P. Gagliardini, S. Gerber
On cheap entropy-sparsified regression learning
Proceedings of the National Academy of Sciences (PNAS), November 2022, pages 1-13, , accepted, in press.
C. Alappat, G. Hager, O. Schenk and G. Wellein
Level-based Blocking for Sparse Matrices: Sparse Matrix-Power-Vector Multiplication
IEEE Transactions on Parallel and Distributed Systems, November 2022, pages 1-18,
J. Kardos, T. Holt, V. Fazio, L. Fabietti, F. Spazzini, O. Schenk
Massively Parallel Data Analytics for Smart Grid Applications
Sustainable Energy, Grids and Networks, June 2022, pages 1-17,
D. Pasadakis, M. Bollhoefer, O. Schenk
Sparse Quadratic Approximation for Graph Learning
TechRxiv, April 2022, pages 1-12,
A. Eftekhari, L. Gaedke-Merzhäuser, D. Pasadakis, M. Bollhoefer, S. Scheidegge, O. Schenk
Large-Scale Precision Matrix Estimation With SQUIC
Social Science Research Network, Elsevier, 2022, Pages 1-15,



D. Kourounis, O. Schenk
Processing of Multiperiod Optimal Power Flow Problems using Structure-Exploiting Patent Interior Point Methods
US Patent number 11,080,362, July 2021

Refereed Conference Articles

T. A. Holt, J. Kardoš, V. Fazio, L. Fabietti, F. Spazzini, O. Schenk
High-Performance Data Analytics Techniques for Power Markets Simulation
2021 International Conference on Smart Energy Systems and Technologies (SEST) Mon, Sep 6, 2021 – Wed, Sep 8, 2021, doi: 10.1109/SEST50973.2021.9543110

Refereed Journal Articles

M. Bollhöfer, O. Schenk, F. Verbosio
High Performance Block Incomplete LU Factorization
Applied Numerical Mathematics, Volume 162, April 2021, Pages 265-282,
A. Eftekhari, D. Pasadakis, S. Scheidegger, M. Bollhöfer, O. Schenk
Block-Enhanced Precision Matrix Estimation for Large-Scale Datasets
Journal of Computational Science, Volume 53, July 2021, Pages 1-39,
D. Pasadakis, C. L. Alappat, O. Schenk, G. Wellein
Multiway p-spectral graph cuts on Grassmann manifolds
Machine Learning, November 2021, Pages 1-39,
J. van Niekerk, H. Bakka, H. Rue, and O. Schenk
New frontiers in Bayesian modeling using the INLA package
Journal of Statistical Software, November 2021, Pages 1-39, 10.18637/jss.v100.i02


Refereed Journal Articles

P. Arbenz, L. Giraud, O. Schenk.W. Vanroose
Guest editorial: Special Issue on Parallel Matrix Algorithms and Applications (PMAA’18)
Parallel Computing, Volume 84, December 2020, Pages 1-2
P. Sanan, D. May, B. Bollhöfer, O. Schenk
Pragmatic Solvers for 3D Stokes and Elasticity Problems with Heterogeneous Coefficients: Evaluating Modern Incomplete LDLT Preconditioners
Solid Earth Discussions, 1-23, 2020,
A. Klawonn, M. Lanser, M. Uran, O. Rheinbach, S. Köhler, J. Schröder, L. Scheunemann, D. Brands, D. Balzani, A. Gandhi, G. Wellein, M. Wittmann, O. Schenk, R. Janalík
Towards A Virtual Laboratory - Computation of Forming Limit Curves
In: Bungartz HJ., Reiz S., Uekermann B., Neumann P., Nagel W. (eds) Software for Exascale Computing - SPPEXA 2016-2019. Lecture Notes in Computational Science and Engineering, vol 136. Springer, Cham,
J. Kardos, D. Kourounis, and O. Schenk
Two-Level Parallel Augmented Schur Complement Interior-Point Algorithms for the Solution of Security Constrained Optimal Power Flow Problems
IEEE Transactions on Power Systems, 1340 - 1350, Volume: 35 , Issue: 2 , March 2020,
C. Alappat, G. Hager, O. Schenk, J. Thies, A. Basermann, A. Bischop, H. Fehske, G. Wellein
A Recursive Algebraic Coloring Technique for Hardware-Efficient Symmetric Sparse Matrix-Vector Multiplication
ACM Transactions on Parallel Computing, Vol. 7, No. 3, Article 19, June 2020


Refereed Journal Articles

M. Bollhoefer, A. Eftekhari, S. Scheidegger, and O. Schenk
Large-Scale Sparse Inverse Covariance Matrix Estimation
SIAM J. Sci. Comput., 41(1), A380–A401, January 2019, DOI:

Book Contributions

M. Bollhöfer, O. Schenk , R. Janalik, S. Hamm, and K. Gullapalli
State-of-The-Art Sparse Direct Solvers
In: Grama A., Sameh A. (eds) Parallel Algorithms in Computational Science and Engineering. Modeling and Simulation in Science, Engineering and Technology. pp 1-32, Birkhäuser, Cham.
J. Kardos, D. Kourounis, and O. Schenk
Parallel Structure Exploiting Interior Point Methods
In: Grama A., Sameh A. (eds) Parallel Algorithms in Computational Science and Engineering. Modeling and Simulation in Science, Engineering and Technology. pp 63-93, Birkhäuser, Cham.