128 citations · 198 across the 13 of their papers we have counts for
13 papers
TERRA-NG v1.0: Extreme-Scale, GPU-accelerated Mantle Convection
Fabian Böhm, Nils Kohl, Ponsuganth Ilangovan +7
We present TERRA-NG, a portable, GPU-accelerated, matrix-free mantle-convection code. A single Kokkos C++ implementation runs at scale on NVIDIA, AMD, and Intel GPU supercomputers.…
Performance Analysis of Low-Order, GPU-accelerated Finite Element Kernels using Kokkos
Fabian Böhm, Nils Kohl, Harald Köstler +1
We study performance portability for low-order, matrix-free finite element kernels, using the example of a vectorial, variable-coefficient PDE operator originating in geophysical m…
Continuous-time nonlinear closed-loop in-memory computing for high-accuracy massive MIMO detection
Piergiulio Mannocci, Giacomo Pedretti, Fabian Böhm +2
Analog in-memory computing (IMC) has emerged as a promising approach for accelerating matrix operations by exploiting the intrinsic physics of memory arrays. To date, however, most…
Accelerating Hybrid XORCNF Boolean Satisfiability Problems Natively with In-Memory Computing
Haesol Im, Fabian Böhm, Giacomo Pedretti +14
The Boolean satisfiability (SAT) problem is a computationally challenging decision problem central to many industrial applications. For SAT problems in cryptanalysis, circuit desig…
Roadmap on Neuromorphic Photonics
Daniel Brunner, Bhavin J. Shastri, Mohammed A. Al Qadasi +147
This roadmap consolidates recent advances while exploring emerging applications, reflecting the remarkable diversity of hardware platforms, neuromorphic concepts, and implementatio…
Parallel Tempering-Inspired Distributed Binary Optimization with In-Memory Computing
Xiangyi Zhang, Fabian Böhm, Elisabetta Valiante +7
In-memory computing (IMC) has been shown to be a promising approach for solving binary optimization problems while significantly reducing energy and latency. Building on the advant…
Code Generation and Performance Engineering for Matrix-Free Finite Element Methods on Hybrid Tetrahedral Grids
Fabian Böhm, Daniel Bauer, Nils Kohl +5
This paper introduces a code generator designed for node-level optimized, extreme-scalable, matrix-free finite element operators on hybrid tetrahedral grids. It optimizes the local…
Tuning and Testing an Online Feedback Optimization Controller to Provide Curative Distribution Grid Flexibility
Lukas Ortmann, Fabian Böhm, Florian Klein-Helmkamp +3
Due to more volatile generation, flexibility will become more important in transmission grids. One potential source of this flexibility can be distribution grids. A flexibility req…
Fundamental Data Structures for Matrix-Free Finite Elements on Hybrid Tetrahedral Grids
Nils Kohl, Daniel Bauer, Fabian Böhm +1
This paper presents efficient data structures for the implementation of matrix-free finite element methods on block-structured, hybrid tetrahedral grids. It provides a complete cat…
Providing Curative Distribution Grid Flexibility Using Online Feedback Optimization
Florian Klein-Helmkamp, Fabian Böhm, Lukas Ortmann +5
Distribution grid flexibility is discussed as a possible measure in curative system operation, yielding a need for an efficient and robust coordination mechanism for the joint flex…
Noise-injected analog Ising machines enable ultrafast statistical sampling and machine learning
Fabian Böhm, Diego Alonso-Urquijo, Guy Verschaffelt +1
Ising machines are a promising non-von-Neumann computational concept for neural network training and combinatorial optimization. However, while various neural networks can be imple…
Small Chimera States without Multistability in a Globally Delay-Coupled Network of Four Lasers
André Röhm, Fabian Böhm, Kathy Lüdge
We present results obtained for a network of four delay-coupled lasers modelled by Lang-Kobayashi-type equations. We find small chimera states consisting of a pair of synchronized…
Amplitude-phase coupling drives chimera states in globally coupled laser networks
Fabian Böhm, Anna Zakharova, Eckehard Schöll +1
For a globally coupled network of semiconductor lasers with delayed optical feedback, we demonstrate the existence of chimera states. The domains of coherence and incoherence that…