Vertex Separator

I would be interested into computing a vertex separator for domain decomposition. I am tempted to use "ComputeVertexSeparator" which is declared in the API but I can't find any documentation about it. Two questions: 1) Can I use this function safely ? 2) could you elaborate on arguments "idx_t* sep_size" and "idx_t* part" ? Thank you very much.

Kind regards,

RE: Yes you can...

This function is used by ParMetis but it can be called directly.

The sep_size parameter returns the size of the separator that was found.
The part array returns a 3-way partitioning. Partitions 0 & 1 are the left/right partitions, and partition 2 is the vertices in the separator.