An approach for parallel loading and pre-processing of unstructured meshes stored in spatially scattered fashion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F19%3A10243796" target="_blank" >RIV/61989100:27740/19:10243796 - isvavai.cz</a>
Result on the web
<a href="https://ieeexplore.ieee.org/document/8820782" target="_blank" >https://ieeexplore.ieee.org/document/8820782</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/IPDPS.2019.00084" target="_blank" >10.1109/IPDPS.2019.00084</a>
Alternative languages
Result language
angličtina
Original language name
An approach for parallel loading and pre-processing of unstructured meshes stored in spatially scattered fashion
Original language description
This paper presents a workflow for parallel loading of database files containing sequentially stored unstructured meshes that are not considered to be efficiently read in parallel. In such a file consecutive elements are not spatially located and their respective nodes are at unknown positions in the file. This makes parallel loading challenging since adjacent elements are on different MPI processes, and their respective nodes are on unknown MPI processes. These two facts lead to a high communication overhead and very poor scalability if not addressed properly. In a standard approach, a sequentially stored mesh is sequentially converted to a particular parallel format accepted by a solver. This represents a significant bottleneck. Our proposed algorithm demonstrates that this bottleneck can be overcome, since it is able to (i) efficiently recreate an arbitrary stored sequential mesh in the distributed memory of a supercomputer without gathering the information into a single MPI rank, and (ii) prepare the mesh for massively parallel solvers. (C) 2019 IEEE
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings - 2019 IEEE 33rd International Parallel and Distributed Processing Symposium, IPDPS 2019
ISBN
978-1-72811-246-6
ISSN
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e-ISSN
1530-2075
Number of pages
12
Pages from-to
749-760
Publisher name
Institute of Electrical and Electronics Engineers Inc.
Place of publication
Rio de Janeiro
Event location
Rio de Janeiro
Event date
May 20, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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