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@stefano2734 Thanks for the suggestion. We do want to upgrade the OpenFOAM version to the latest. The main limitation is that we need to differentiate the newer OF version using CoDiPack and MeDiPack. This process is very time-consuming (on the order of months), and we do not have the manpower to do that at this moment...
Description of feature
GPU with using OpenCL, HIP and CUDA can accelerate about 4 to 100 times against cpu solution.
Potential solution
OGL Openfoam Ginkgo Layer with CUDA can do this with Nvidia Hardware.
See https://github.com/hpsim/OGL
minimum openfoam version is here 2106. so an update is here necessary in openfoam base.
and a solution with OpenCL is also possible with openfoam 1912 with solver petsc4foam
https://www.esi-group.com/sites/default/files/resource/other/1806/8th_OpenFOAM_Conference_Cineca_Spisso_2_0.pdf
https://wiki.openfoam.com/images/c/cd/OpenFOAM_2020_KAUST_Zampini.pdf
third is OpenMP 5.0 and higher (actual 5.2, 6.0 wip) with possible offloading to GPU with newer adapted openfoam
https://arxiv.org/pdf/2205.05681.pdf
https://www.openmp.org/wp-content/uploads/OpenMP_ECP_Sollve_May2023_AMDtalk.pdf
https://www.openmp.org/resources/refguides/
So two ways: external layer or internal in openfoam with newer Version of openfoam.
actual installation nextfoam with actual openfoam 23.06 and petsc4foam
https://blog.nextfoam.co.kr/2024/01/10/gpu-accelerated-openfoam-with-petsc4foam/
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