RIB currently does not support multiple vertex weights. For such cases, use RCB instead.
Method String: | RIB |
Parameters: | |
RIB_OVERALLOC | The amount by which to over-allocate temporary storage arrays for objects
within the RIB algorithm when additional storage is due to changes in processor
assignments.
1.0 = no extra storage allocated; 1.5 = 50% extra storage; etc. |
RIB_OUTPUT_LEVEL | Flag controlling the amount of timing and diagnostic output the routine
produces.
0 = no output; 1 = print summary; 2 = print data for each processor. |
CHECK_GEOM | Flag controlling the invocation of input and output error checking.
0 = don't do checking; 1 = do checking. |
KEEP_CUTS | Should information about the cuts determining the RIB decomposition
be retained? It costs a bit of time to do so, but this information is necessary
if application wants to add more objects to the decomposition via calls
to Zoltan_LB_Point_PP_Assign
or to Zoltan_LB_Box_PP_Assign.
0 = don't keep cuts; 1 = keep cuts. |
AVERAGE_CUTS | When set to one, coordinates of RIB cutting planes are computed to be the
average of the coordinates of the closest object on each side of the cut.
Otherwise, coordinates of cutting planes may equal those of one of the
closest objects.
0 = don't average cuts; 1 = average cuts. |
REDUCE_DIMENSIONS | When a 3 dimensional geometry is almost flat, it may make more sense to treat it as a 2 dimensional geometry when applying the RIB algorithm. (Coordinate values in the omitted direction are ignored for the purposes of partitioning.) If this parameter is set to 1, a 3 dimensional geometry will be treated as 2 dimensional if it is very flat, or 1 dimensional if it is very thin. A 2 dimensional geometry will be treated as 1 dimensional if it is very thin. |
DEGENERATE_RATIO | If the REDUCE_DIMENSIONS parameter is set, then this parameter determines when a geometry is considered to be degenerate. A bounding box which is oriented to the geometry is constructed, and the lengths of its sides are tested against a ratio of 1 : DEGENERATE_RATIO. |
Default: | |
RIB_OVERALLOC = 1.2 | |
RIB_OUTPUT_LEVEL = 0 | |
CHECK_GEOM = 1 | |
KEEP_CUTS = 0 | |
AVERAGE_CUTS = 0 | |
REDUCE_DIMENSIONS = 0 | |
DEGENERATE_RATIO = 10 | |
Required Query Functions: | |
ZOLTAN_NUM_OBJ_FN | |
ZOLTAN_OBJ_LIST_FN | |
ZOLTAN_NUM_GEOM_FN | |
ZOLTAN_GEOM_MULTI_FN or ZOLTAN_GEOM_FN |