Upgrade Kokkos to version 4.3.00

Closes #182

See merge request gysela-developpers/gyselalibxx!450

--------------------------------------------

src/geometryXYVxVy/poisson/chargedensitycalculator.cpp

@@ -52,31 +52,13 @@ void ChargeDensityCalculator::operator()(DSpanXY rho, DViewSpXYVxVy allfdistribu
                 const int ix = idx / ny;
                 const int iy = idx % ny;
                 double teamSum = 0;
-                Kokkos::parallel_reduce(
-                        Kokkos::TeamThreadRange(team, nsp * nvx * nvy),
-                        [&](int thread_idx, double& sum) {
-                            int isp = thread_idx / (nvx * nvy);
-                            thread_idx -= isp * (nvx * nvy);
-                            int ivx = thread_idx / nvy;
-                            int ivy = thread_idx % nvy;
-                            sum += static_cast<double>(charges(isp)) * coef_view(ivx, ivy)
-                                   * allfdistribu_view(isp, ix, iy, ivx, ivy);
-                        },
-                        teamSum);
-                /*
-                 * The code below is cleaner but currently only works on kokkos's develop branch (as of 15/03/24)
-                 * The associated issue is : https://github.com/kokkos/kokkos/issues/6530
-                 * After the next release of Kokkos this code should be uncommented to replace the more
-                 * verbose version above.
-                 *
                 Kokkos::parallel_reduce(
                         Kokkos::TeamThreadMDRange(team, nsp, nvx, nvy),
                         [&](int isp, int ivx, int ivy, double& sum) {
                             sum += static_cast<double>(charges(isp)) * coef_view(ivx, ivy)
                                    * allfdistribu_view(isp, ix, iy, ivx, ivy);
                         },
                         teamSum);
-                */
                 rho_view(ix, iy) = chargedens_adiabspecies + teamSum;
             });
     Kokkos::Profiling::popRegion();