//__global__ void module_potentialDerivatives_totalGradient2_SOA_GPU(type_t *grid_grad2_a, type_t *grid_grad2_b, type_t *grid_grad2_c, type_t *grid_grad2_d, const struct Potential_SOA *lens, const struct grid_param *frame, int nhalos, type_t dx, type_t dy, int nbgridcells_x, int nbgridcells_y, int istart = 0, int jstart = 0);
__global__
void
module_potential_totalPotential_SOA_GPU(type_t *potential_GPU, const struct Potential_SOA *lens, const struct grid_param *frame, int nhalos, type_t dx, type_t dy, int nbgridcells_x, int nbgridcells_y, int istart, int jstart);