Open AccessLoad balanced heterogeneous parallelism for finite difference problems on image denoising
Author(s) -
Laso Ruben,
Cabaleiro José C.,
F. Rivera Francisco,
Muñiz M. Carmen,
ÁlvarezDios José A.
Publication year - 2021
Publication title -
computational and mathematical methods
Language(s) - English
Resource type - Journals
ISSN - 2577-7408
DOI - 10.1002/cmm4.1089
Subject(s) - parallelism (grammar) , image denoising , image (mathematics) , noise reduction , computer science , parallel computing , finite difference , mathematics , artificial intelligence , mathematical analysis
In this work, we introduce a heterogeneous scheme for computing iterative (or time‐step) methods based on finite differences, using an image denoising problem as case study. The idea of this proposal is to dynamically split the domain of the problem into smaller regions based on the CPU and GPU performance, balancing the workload between them. Results show that this approach improves the execution times compared with only use GPU, which is typically faster than CPU in this kind of problems. In our experiments, performance improvements go from 3%, in scenarios where CPU can only handle a little portion of workload, to more than 30%, when CPU can assume more work.