[Trilinos-Users] PHG_EDGE_SIZE_THRESHOLD is low

[Vishal Boddu]

Dear all,

We are using Zoltan (Trilinos 12.12.1) to partition a graph and I don't 
quite understand the following warning produced:

WARNING: PHG_EDGE_SIZE_THRESHOLD is low (0.250000), resulting in only 0 
edges
remaining.

These were thrown when I tried to partition a graph (two quadrilaterals 
sharing an edge) with two MPI processes. The only place which prints 
such warnings is: 
https://github.com/trilinos/Trilinos/blob/f0350316239aaf41e8e6b82378612aaedf9cc72c/packages/zoltan/src/phg/phg_build.c#L1776

I appreciate any help with figuring out what this means and if this 
warning is important or it could be ignored?

Kind regards,


Vishal Boddu M.Sc.(hons.)
Chair of Applied Mechanics
University of Erlangen-Nuremberg
Paul-Gordan-Straße 3, 91058 Erlangen
Tel: + 49-9131-85-64410, Fax: + 49-9131-85-28503
vishal.boddu at fau.de | www.ltm.tf.fau.de