Attempt to update to newer OpenFOAM v2306

[adrielpoo]

We are trying to update RapidCFD to a newer version of OpenFOAM v2306. We try to copy files directly from OpenFOAM to RapidCFD (Ospecific and Pstream) and currently trying to sort out dependencies errors. Has anybody tried this method before? and/or has any advice?

[TonkomoLLC]

That's great news that you are working to modernize RapidCFD. I cannot give specific advice without knowing about the errors, and even then I might not know the answer (because I don't have a lot of experience with upgrading PStream and OSspecific). But you asked in general about advice... OpenFOAM has evolved so much in the past 9 years I am not sure if it is easier to copy updates from OpenFOAM-v2306 to RapidCFD (which sounds like your approach), or to start with a fresh working copy of OpenFOAM-v2306 and modify -v2306 with the GPU/CUDA related code from RapidCFD.

[klausbu]

Would you please add the option to access the full matrix in CSR format, if it's distributed (parallel run) then the full distributed, local parts individually to avoid data doubling when implementing external GPU libraries in addition to the standard solvers. I can provide a conversion routine, that works on the CPU but it's copying the data which should be avoided especially on the GPU with usually limited GPU memory. I mean a switch to switch between LDU and L+D+U in CSR format that can be used within the PCG source code which is my template to add external solvers.

[TonkomoLLC]

For your posts today (this and #110) , I hope that @daniel-jasinski can reply
I cannot efficiently help you here, unfortunately

[klausbu]

Check my post #117 There is already a new version based on OpenFOAM 2112 presented at an OpenFOAM conference in 2023 . It goes a bit deeper than RapidCFD but follows the same approach. The project is hosted at Sugon but i have not been able to register. I have not been able to compile it due to permission and endless (standard) source paths related issues...

[hugh-tong]

Check my post #117 There is already a new version based on OpenFOAM 2112 presented at an OpenFOAM conference in 2023 . It goes a bit deeper than RapidCFD but follows the same approach. The project is hosted at Sugon but i have not been able to register. I have not been able to compile it due to permission and endless (standard) source paths related issues...

Are there any materials showcasing the results of GPU acceleration in the new version of OpenFOAM?