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LOCATION:HG EO Nord
DTSTART;TZID=Europe/Stockholm:20190613T195000
DTEND;TZID=Europe/Stockholm:20190613T215000
UID:submissions.pasc-conference.org_PASC19_sess179_post128@linklings.com
SUMMARY:CSM08 - Design and Implementation of an Exascale-Ready Mini-App fo
 r Smoothed Particle Hydrodynamics (SPH) Simulations
DESCRIPTION:Poster\n\n\nCSM08 - Design and Implementation of an Exascale-R
 eady Mini-App for Smoothed Particle Hydrodynamics (SPH) Simulations\n\nCio
 rba, Mayer, Cabezon, Imbert, Guerrera...\n\nThis work presents the design 
 and implementation of SPH-EXA: an Exascale-ready mini-app for SPH simulati
 ons. It stems from three SPH codes that are part of the PASC SPH-EXA 
 project[1](SPHYNX[2], ChaNGa[3], and SPH-flow[4]). This mini-app is a self
 -contained C++ software with support for multi-nodes and multi-core comput
 ation via MPI+OpenMP and performs parallel SPH simulations on supercompute
 rs. The goals of the mini-app are: testing new HPC architectures; improvin
 g the SPH technique in a scalable manner; and approximating a fully Lagran
 gian SPH simulation in less than 5000 lines. The software package design i
 s simple, lightweight, and easily adaptable to new hardware. The SPH-EXA m
 ini-app has been submitted to the SPEC consortium for inclusion in the HPC
 2020 benchmarks suite. This work presents the status of the mini-app summa
 rizing its designing phase and results of two test scenarios: the gravitat
 ional collapse of a gaseous cloud (Evrard collapse[5]) and a rotating squa
 re patch of fluid[6]. Parallelization of SPH codes is non-trivial due to t
 he absence of a structured grid: the SPH-EXA mini-app splits the computati
 onal domain across compute nodes in blocks containing the same number of p
 articles, while ghost particles are communicated to neighboring blocks.<br
  />[1] https://www.pasc-ch.org/projects/2017-2020/sph-exa/<br />[2] http:/
 /astro.physik.unibas.ch/sphynx<br />[3] http://faculty.washington.edu/trq/
 hpcc/tools/changa.html<br />[4] http://www.nextflow-software.com/<br />[5]
  http://padis.uniroma1.it/handle/10805/688 (2D version)<br />[6] https://d
 l.acm.org/citation.cfm?id=2982891
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