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Performance Engineering for a Medical Imaging Application on the Intel Xeon Phi Accelerator
Johannes Hofmann, Jan Treibig, Georg Hager +1
We examine the Xeon Phi, which is based on Intel's Many Integrated Cores architecture, for its suitability to run the FDK algorithm--the most commonly used algorithm to perform the…
Effects of disorder and contacts on transport through graphene nanoribbons
A. Pieper, G. Schubert, G. Wellein +1
We study the transport of charge carriers through finite graphene structures. The use of numerical exact kernel polynomial and Green function techniques allows us to treat actual s…
A unified sparse matrix data format for efficient general sparse matrix-vector multiply on modern processors with wide SIMD units
Moritz Kreutzer, Georg Hager, Gerhard Wellein +2
Sparse matrix-vector multiplication (spMVM) is the most time-consuming kernel in many numerical algorithms and has been studied extensively on all modern processor and accelerator…
Chip-level and multi-node analysis of energy-optimized lattice-Boltzmann CFD simulations
Markus Wittmann, Georg Hager, Thomas Zeiser +2
Memory-bound algorithms show complex performance and energy consumption behavior on multicore processors. We choose the lattice-Boltzmann method (LBM) on an Intel Sandy Bridge clus…
Optimization of FASTEST-3D for Modern Multicore Systems
Christoph Scheit, Georg Hager, Jan Treibig +2
FASTEST-3D is an MPI-parallel finite-volume flow solver based on block-structured meshes that has been developed at the University of Erlangen-Nuremberg since the early 1990s. It c…
Asynchronous MPI for the Masses
Markus Wittmann, Georg Hager, Thomas Zeiser +1
We present a simple library which equips MPI implementations with truly asynchronous non-blocking point-to-point operations, and which is independent of the underlying communicatio…