173 citations · 195 across the 7 of their papers we have counts for
7 papers
Radiative Efficiency Enhancement by Electromagnetic Energy Dissipation in Strongly Magnetized Supercritical Accretion Flows around Kerr Black Holes
Hiroyuki R. Takahashi, Ken Ohsuga, Ryohei Kobayashi +4
We investigate how black hole spin and the amount of magnetic flux affect electromagnetic energy dissipation and radiation transport in supercritical accretion flows. For this purp…
White Paper from Workshop on Large-scale Parallel Numerical Computing Technology (LSPANC 2020): HPC and Computer Arithmetic toward Minimal-Precision Computing
Roman Iakymchuk, Daichi Mukunoki, Artur Podobas +15
In numerical computations, precision of floating-point computations is a key factor to determine the performance (speed and energy-efficiency) as well as the reliability (accuracy…
SALMON: Scalable Ab-initio Light-Matter simulator for Optics and Nanoscience
Masashi Noda, Shunsuke A. Sato, Yuta Hirokawa +15
SALMON (Scalable Ab-initio Light-Matter simulator for Optics and Nanoscience, http://salmon-tddft.jp) is a software package for the simulation of electron dynamics and optical prop…
Mixed Precision Solver Scalable to 16000 MPI Processes for Lattice Quantum Chromodynamics Simulations on the Oakforest-PACS System
Taisuke Boku, Ken-Ichi Ishikawa, Yoshinobu Kuramashi +1
Lattice Quantum Chromodynamics (Lattice QCD) is a quantum field theory on a finite discretized space-time box so as to numerically compute the dynamics of quarks and gluons to expl…
A performance evaluation of CCS QCD Benchmark on the COMA (Intel(R) Xeon Phi, KNC) system
Taisuke Boku, Ken-Ichi Ishikawa, Yoshinobu Kuramashi +4
The most computationally demanding part of Lattice QCD simulations is solving quark propagators. Quark propagators are typically obtained with a linear equation solver utilizing HP…
Multi-block/multi-core SSOR preconditioner for the QCD quark solver for K computer
T. Boku, K. -I. Ishikawa, Y. Kuramashi +7
We study the algorithmic optimization and performance tuning of the Lattice QCD clover-fermion solver for the K computer. We implement the Lüscher's SAP preconditioner with sub-blo…