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Title: | Large-scale parallelization of Human Migration Simulation |
Authors: | Groen, D Papadopoulou, N Anastasiadis, P Lawenda, M Szustak, L Gogolenko, S Arabnejad, H Jahani, A |
Keywords: | migration;refugees;global systems science;global challenges;parallelization;HPC;AMD Rome;Intel Xeon;benchmarks;modeling;computational complexity |
Issue Date: | 3-Aug-2023 |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Citation: | Groen, D. et al. (2024) 'Large-scale parallelization of Human Migration Simulation', IEEE Transactions on Computational Social Systems, 11 (2), pp. 2135 - 2146. doi: 10.1109/TCSS.2023.3292932. |
Abstract: | Forced displacement of people worldwide, for example, due to violent conflicts, is common in the modern world, and today more than 82 million people are forcibly displaced. This puts the problem of migration at the forefront of the most important problems of humanity. The Flee simulation code is an agent-based modeling tool that can forecast population displacements in civil war settings, but performing accurate simulations requires nonnegligible computational capacity. In this article, we present our approach to Flee parallelization for fast execution on multicore platforms, as well as discuss the computational complexity of the algorithm and its implementation. We benchmark parallelized code using supercomputers equipped with AMD EPYC Rome 7742 and Intel Xeon Platinum 8268 processors and investigate its performance across a range of alternative rule sets, different refinements in the spatial representation, and various numbers of agents representing displaced persons. We find that Flee scales excellently to up to 8192 cores for large cases, although very detailed location graphs can impose a large initialization time overhead. |
URI: | https://bura.brunel.ac.uk/handle/2438/26850 |
DOI: | https://doi.org/10.1109/TCSS.2023.3292932 |
Other Identifiers: | ORCiD: Derek Groen https://orcid.org/0000-0001-7463-3765 ORCiD: Nikela Papadopoulou https://orcid.org/0000-0003-2141-5654 ORCiD: Marcin Lawenda https://orcid.org/0000-0003-4844-3655 ORCiD: Lukasz Szustak https://orcid.org/0000-0001-7429-6981 ORCiD: Sergiy Gogolenko https://orcid.org/0000-0003-4957-5377 ORCiD: Hamid Arabnejad https://orcid.org/0000-0002-0789-1825 ORCiD: Alireza Jahani https://orcid.org/0000-0001-9813-352X |
Appears in Collections: | Dept of Computer Science Research Papers |
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