GPU and Fortran interface ?

[avergnaud002]

Hello,

In AMReX documentation it is stated that : "The Fortran interface of AMReX does not currently have GPU support. AMReX recommends porting Fortran code to C++ when coding for GPUs."
Is it still the case, or is there a "simple" way to use AMReX with GPU for codes written in fortran ?

Thanks
Alban

[WeiqunZhang]

Yes, this is still the case. If you call amrex_multifab_add from Fortran, it will run on GPU. But if you have your own functions, you can write it in C++ and provides a Fortran interface, or you can use OpenMP or OpenACC or CUDA Fortran etc.

[avergnaud002]

Ok thank you for your answer.