Graphviz layout issue - neato >2000 vertices

Hi, I am trying to do a layout of a 2,000 vertex graph with Graphviz and
neato in Linux.

This graph is a minimum spanning tree (MST) created from the topology module
using integer edge weights for layout.

I have not selected any options about edge length, etc. only specified
'neato' with png output. However, the output is an extremely bunch group of
nodes in a circular region with no resolution of the edges. I am wondering
if this is a GraphViz plotting issue or if this is a issue with the MST? Any
help appreciated.

Without a concrete example of what you mean, it is very hard to say what
may be happening.

Best,
Tiago

Ok, I figured this out---it was an error in my weights code.