Problem in integration of GPU based solver with OpenFOAM

puja.khirodkar · May 17, 2016, 02:13

Hi all....
I am trying to integrate my GPU based Conjugate Gradient SOlver in CUDA with OpenFOAM-2.4.0 using PARALUTION-1.0.0 library. But I am facing problem in linking CUDA (.cu) file with .C file .
My file structure is as follows:

new_PCG.C is an OpenFOAM file wherein input is generated and it calls a cg( ) function from conjGrad.cu (CUDA File) file . I have given a path of new_PCG.C in Make/files . To compile conjGrad.cu,I made a shared object (.so) file and given its path in Make/Options . But still it cannot find cg( ) function. It may be because the linking is not done here .

Can anyone suggest me the way I can do this?

dybuk · May 17, 2016, 03:03

There is a CUDA solvers for foam-extended based on cusp library. Source code can be found in foam-extend repo or on github :
https://github.com/Benjamin-git/cufflink-library

If you analyze code you should find some clues

Nitish25 · December 12, 2022, 06:37

Quote:

Originally Posted by dybuk

There is a CUDA solvers for foam-extended based on cusp library. Source code can be found in foam-extend repo or on github :
https://github.com/Benjamin-git/cufflink-library

If you analyze code you should find some clues

Hi can you kindly tell me the procedure to get the "Integrating OpenFOAM and GPUs using cufflink library"
Thanks

May 17, 2016, 02:13	Problem in integration of GPU based solver with OpenFOAM	#1
puja.khirodkar New Member Puja Join Date: May 2016 Posts: 1 Rep Power: 0	Hi all.... I am trying to integrate my GPU based Conjugate Gradient SOlver in CUDA with OpenFOAM-2.4.0 using PARALUTION-1.0.0 library. But I am facing problem in linking CUDA (.cu) file with .C file . My file structure is as follows: new_PCG.C is an OpenFOAM file wherein input is generated and it calls a cg( ) function from conjGrad.cu (CUDA File) file . I have given a path of new_PCG.C in Make/files . To compile conjGrad.cu,I made a shared object (.so) file and given its path in Make/Options . But still it cannot find cg( ) function. It may be because the linking is not done here . Can anyone suggest me the way I can do this?

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May 17, 2016, 03:03		#2
dybuk Member W.T Join Date: Oct 2012 Posts: 35 Rep Power: 13	There is a CUDA solvers for foam-extended based on cusp library. Source code can be found in foam-extend repo or on github : https://github.com/Benjamin-git/cufflink-library If you analyze code you should find some clues