Something wrong with the compilation. What should I going to do next? Thanks!

Hi the KOKKOS version of the LBM code is not complete, you are getting the error because you ae missing KOKKOS. I’d suggest trying either our 2d-lbm-dem code http://github.com/cb-geo/2d-lbm-dem or other LBM codes like WALBERLA or Palabos.

Thanks, sorry about the trouble.