Drift all particles before repartitioning
Drifting them afterwards can result in some cells having inconsistent particle lists, so this must be done first. This fixes the crashes I was seeing in MPI runs of the SodShock with 4x12 cores.
Drifting them afterwards can result in some cells having inconsistent particle lists, so this must be done first. This fixes the crashes I was seeing in MPI runs of the SodShock with 4x12 cores.