Hello all, here's the link to the firedrake branch that has the explicit P1 mass-lumped wave equation solver. https://code.launchpad.net/~fluidity-core/fluidity/firedrake-explicit-wave-t... The code is in: tests/firedrake_wave_explicit/ Doru, you know the magic incantation to build space-filling curve numbered meshes, can you share it? Paul: what would Kaho need to do to get an account on cx1 to run test cases? Lawrence