As a result , a fixed maximal separator size can be enforced by first calculating all separator sizes and then iteratively merging any pair of nodes having a separator larger than a given amount .
The size of the separators do not need to be recalculated during execution .
As a result , a fixed maximal separator size can be enforced by first calculating all separator sizes and then iteratively merging any pair of nodes having a separator larger than a given amount , and the size of the separators do not need to be recalculated during execution .