Struct metis::option::UFactor

pub struct UFactor(pub Idx);

Specifies the maximum allowed load imbalance among the partitions.

A value of x indicates that the allowed load imbalance is (1 + x)/1000. The load imbalance for the jth constraint is defined to be max_i(w[j,i]/t[j,i]), where w[j,i] is the fraction of the overall weight of the jth constraint that is assigned to theith partition and t[j,i] is the desired target weight of the jth constraint for the ith partition (i.e., that specified via -tpwgts). For -ptype=rb, the default value is 1 (i.e., load imbalance of 1.001) and for -ptype=kway, the default value is 30 (i.e., load imbalance of 1.03).

Tuple Fields

0: Idx

Trait Implementations

impl Opt for UFactor

const INDEX: usize = 17usize

Index of the option in the array from crate::Graph::set_options and crate::Mesh::set_options.

fn value(self) -> Idx

Convert the value into metis’ format, for use with crate::Graph::set_options and crate::Mesh::set_options.