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@MISC{Herten:916370,
author = {Herten, Andreas and Oden, Lena and Hrywniak, Markus and
Kraus, Jiri and Garcia De Gonzalo, Simon},
title = {{E}fficient {D}istributed {GPU} {P}rogramming for
{E}xascale},
reportid = {FZJ-2022-06171},
year = {2022},
note = {Material available at https://zenodo.org/record/7391024},
abstract = {Over the past years, GPUs became ubiquitous in HPC
installations around the world. Today, they provide the
majority of performance of some of the largest
supercomputers (e.g. Summit, Sierra, JUWELS Booster). This
trend continues in the recently deployed and upcoming
Pre-Exascale and Exascale systems (LUMI, Leonardo; Frontier,
Perlmutter): GPUs are chosen as the core computing devices
to enter this next era of HPC.To take advantage of future
GPU-accelerated systems with tens of thousands of devices,
application developers need to have the proper skills and
tools to understand, manage, and optimize distributed GPU
applications. In this tutorial, participants will learn
techniques to efficiently program large-scale multi-GPU
systems. While programming multiple GPUs with MPI is
explained in detail, also advanced tuning techniques and
complementing programming models like NCCL and NVSHMEM are
presented. Tools for analysis are shown and used to motivate
and implement performance optimizations. The tutorial
teaches fundamental concepts that apply to GPU-accelerated
systems in general, taking the NVIDIA platform as an
example. It is a combination of lectures and hands-on
exercises, using Europe’s fastest supercomputer, JUWELS
Booster, for interactive learning and discovery.},
month = {Nov},
date = {2022-11-14},
organization = {Supercomputing Conference, Dallas
(USA), 14 Nov 2022 - 14 Nov 2022},
subtyp = {After Call},
cin = {JSC},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {5122 - Future Computing $\&$ Big Data Systems (POF4-512) /
5112 - Cross-Domain Algorithms, Tools, Methods Labs (ATMLs)
and Research Groups (POF4-511) / 5111 - Domain-Specific
Simulation $\&$ Data Life Cycle Labs (SDLs) and Research
Groups (POF4-511) / ATML-X-DEV - ATML Accelerating Devices
(ATML-X-DEV)},
pid = {G:(DE-HGF)POF4-5122 / G:(DE-HGF)POF4-5112 /
G:(DE-HGF)POF4-5111 / G:(DE-Juel-1)ATML-X-DEV},
typ = {PUB:(DE-HGF)17},
doi = {10.5281/ZENODO.7391024},
url = {https://juser.fz-juelich.de/record/916370},
}