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@INBOOK{Peyser:834363,
author = {Peyser, Alexander},
title = {{N}est{MC}: {A} new multi-compartment neuronal network
simulator},
volume = {FZJ-JSC-IB-2017-01},
address = {Jülich},
publisher = {Forschungszentrum Jülich Jülich Supercomputing Centre},
reportid = {FZJ-2017-04336},
series = {JSC Internal Report},
pages = {31-36},
year = {2017},
comment = {JUQUEEN Extreme Scaling Workshop 2017},
booktitle = {JUQUEEN Extreme Scaling Workshop 2017},
abstract = {NestMC is a prototype simulator for neuronal networks
composed of morphologically detailed neurons.This new code
is being designed for the new generation of HPC
infrastructure composed of massively parallel and
heterogeneous architectures.Planned architectures include
`normal' non-vectorized CPUs, vectorized CPUs such as KNL,
GPUs and other boosters such as FPGAs.For OpenMP, the
current architecture with 1 thread per rank handling all
spike communications and exchange scales well up to 2048
nodes, and continues to give performance gains up to full
JUQUEEN.Using threading pools that partially implement the
functionality of TBB, we see good weak-scaling up to 4096
nodes and can expect to see performance gains up to JUQUEEN
scale.For more complex neuron models and morphologies which
increase the ratio of computation time to communication
time, weak scaling should be significantly improved; the
cases tested are 'worst case scenarios' relative to
production runs.With this workshop, we identified the limits
of weak-scaling on the current architecture.This motivated
the development of a threading backend for architectures
where TBB is not available.Since the communication time is
dominated by processing the global spike buffers, a dry-run
mode has been developed taking advantage of this performance
profile, which will allow us to estimate these results using
negligible resources.},
month = {Jan},
date = {2017-01-23},
organization = {Jülich (Germany), 23 Jan 2017 - 25
Jan 2017},
cin = {JSC},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511) / 574 - Theory, modelling and simulation
(POF3-574) / HBP SGA1 - Human Brain Project Specific Grant
Agreement 1 (720270) / SMHB - Supercomputing and Modelling
for the Human Brain (HGF-SMHB-2013-2017) / SLNS - SimLab
Neuroscience (Helmholtz-SLNS)},
pid = {G:(DE-HGF)POF3-511 / G:(DE-HGF)POF3-574 /
G:(EU-Grant)720270 / G:(DE-Juel1)HGF-SMHB-2013-2017 /
G:(DE-Juel1)Helmholtz-SLNS},
typ = {PUB:(DE-HGF)7},
url = {https://juser.fz-juelich.de/record/834363},
}