METIS computes a local ordering of the objects on each processor, while ParMETIS performs a global ordering of all the objects. ParMETIS currently (version 3.1, supported by Zoltan) requires that the number of processors is a power of two.
The generic name for this method is NODEND. If GRAPH_TYPE=GLOBAL
ParMETIS is called, but if it is LOCAL, METIS is called. Alternatively,
the user can simply set ORDER_METHOD to METIS or PARMETIS.
Order_Method String: | NODEND or METIS or PARMETIS |
Parameters: | |
See ParMETIS. | Note that the PARMETIS options are ignored when METIS is called. |
Required Query Functions: | |
ZOLTAN_NUM_OBJ_FN | |
ZOLTAN_OBJ_LIST_FN | |
ZOLTAN_NUM_EDGES_MULTI_F
N or
ZOLTAN_NUM_EDGES_FN
ZOLTAN_EDGE_LIST_MULTI_F N or ZOLTAN_EDGE_LIST_FN |