256 citations · 1.6k across the 29 of their papers we have counts for
29 papers
Mixed precision solvers with half-precision floating point numbers for Lattice QCD on A64FX processor
Issaku Kanamori, Hideo Matsufuru, Tatsumi Aoyama +4
We investigate the use of half-precision floating-point numbers (FP16) in mixed-precision linear solvers for lattice QCD simulations. Since the emergence of GPUs for general-purpos…
Wilson matrix kernel for lattice QCD on A64FX architecture
Issaku Kanamori, Keigo Nitadori, Hideo Matsufuru
We study the implementation of the even-odd Wilson fermion matrix for lattice QCD simulations on the A64FX architecture. Efficient coding of the stencil operation is investigated f…
SCF-FDPS: A Fast -body Code for Simulating Disk-halo Systems
Shunsuke Hozumi, Keigo Nitadori, Masaki Iwasawa
A fast -body code has been developed for simulating a stellar disk embedded in a live dark matter halo. In generating its Poisson solver, a self-consistent field (SCF) code whic…
102 PFLOPS Lattice QCD quark solver on Fugaku
Ken-Ichi Ishikawa, Issaku Kanamori, Hideo Matsufuru +5
We present results on the world's first over 100 PFLOPS single precision lattice QCD quark solver on the japanese new supercomputer Fugaku. We achieve a factor 38 time speedup from…
Step-size effect in the time-transformed leapfrog integrator on elliptic and hyperbolic orbits
Long Wang, Keigo Nitadori
A drift-kick-drift (DKD) type leapfrog symplectic integrator applied for a time-transformed separable Hamiltonian (or time-transformed symplectic integrator; TSI) has been known to…
PeTar: a high-performance N-body code for modeling massive collisional stellar systems
Long Wang, Masaki Iwasawa, Keigo Nitadori +1
The numerical simulations of massive collisional stellar systems, such as globular clusters (GCs), are very time-consuming. Until now, only a few realistic million-body simulations…