EVpath specifically does not encompass global overlay creation, management or destruction functions. Rather it focusses on providing efficient environment for routine transport, while providing interfaces necessary for external management layers.
The package is built around the concept of "stones" (like stepping stones) which are linked to build end-to-end "paths". While the "path" is not an explicitly supported construct in EVpath, the goal is to provide all the local, stone-level, support necessary to accomplish their setup, monitoring, management, modification and tear-down.
Stones in EVpath are lightweight entities that roughly correspond to processing points in dataflow diagrams. Stones of different types perform data filtering, data transformation, mux and demux of data as well as transmission of data between processes over network links.
EVPATH is available under the new BSD license. A source distribution is available in gzip format. Alternatively, for binary installations we have :
However, if you're going to be making changes, porting to a new platform or doing anything else that may require closer ties to our source trees, please consider a SVN checkout for relevant packages.