OPAL aborts with "number of particles per cell too low" error when running SAAMG solver
OPAL aborts with "number of particles per cell too low" error when running SAAMG solver. This is due to a check in TrackRun.cpp. The SAAMG solver puts a grid not only around the bunch, but the whole simulation space, so this check should be avoided for SAAMG (similar to AMR).
(Note: I already resolved this, just need the issue for merging)