Reordering/renumbering of cells and faces

[a-jp]

Hi, my code is cell-entered. Therefore for cache efficiency I need to reduce the bandwidth of the left and right cells either side of a face. So I need to renumber the cells to do this. Secondly, I'd like to order the faces (after having reordered the cells) such that the left and rights of the newly ordered faces are accessed in a cache efficient manner.

The current reordering looks like its reordering cells and nodes, which leads me to suspect this is not what I need. Does anyone know how to do what I need to do in apf/pumi? Can I do this in Zoltan via the apf-zoltan api? Thanks, Andy