3 papers
astro-ph.IM2024
MPI-Rockstar: a Hybrid MPI and OpenMP Parallel Implementation of the Rockstar Halo finder
Tomoyuki Tokuue, Tomoaki Ishiyama, Ken Osato +2
MPI-Rockstar is a massively parallel halo finder based on the Rockstar phase-space temporal halo finder code, which is one of the most extensively used halo finding codes. Compared…
astro-ph.IM2024
Optimizing the Gravitational Tree Algorithm for Many-Core Processors
Tomoyuki Tokuue, Tomoaki Ishiyama
Gravitational -body simulations calculate numerous interactions between particles. The tree algorithm reduces these calculations by constructing a hierarchical oct-tree structur…
cs.DC2023
Performance Evaluation of Parallel Sortings on the Supercomputer Fugaku
Tomoyuki Tokuue, Tomoaki Ishiyama
Sorting is one of the most basic algorithms, and developing highly parallel sorting programs is becoming increasingly important in high-performance computing because the number of…