Browsing by Author "Wagner, Michael"
Wagner, Michael; Knüpfer, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2017-07-13)
Open AccessOne of the most urgent challenges in event based performance analysis is the enormous amount of collected data. Combining event tracing and periodic sampling has been a successful approach to allow a detailed event-based ...
Farrús Cabeceran, Mireia; Wagner, Michael; Erro Eslava, Daniel; Hernando Pericás, Francisco Javier (2010-01-01)
Open AccessVoices can be deliberately disguised by means of human imitation or voice conversion. The question arises to what extent they can be modified by using either method. In the current paper, a set of speaker identification ...
Efficient Computation of Sparse Matrix Functions for Large-Scale Electronic Structure Calculations: The CheSS Library Mohr, Stephan; Dawson, William; Wagner, Michael; Caliste, Damien; Nakajima, Takahito; Genovese, Luigi (American Chemical Society, 2017-09-05)
Open AccessWe present CheSS, the “Chebyshev Sparse Solvers” library, which has been designed to solve typical problems arising in large-scale electronic structure calculations using localized basis sets. The library is based on a ...
Wagner, Michael; López, Victor; Morillo, Julian; Cavazzoni, Carlo; Affinito, Fabio; Gimenez, Judit; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Open AccessIn this paper, we address the decreasing performance of the FFTXlib, the Fast Fourier Transformation (FFT) kernel of Quantum ESPRESSO, when scaling to a full KNL node. An increased performance in the FFTXlib will likewise ...
Wagner, Michael; Gimenez, Judit (Barcelona Supercomputing Center, 2017-05-04)
Open AccessOne of the emerging architectures in HPC systems is Intel’s Knights Landing (KNL) many core chip, which will also be part of BSC’s next HPC installation MareNostrum 4. KNL is the code name of the second generation of Intel ...