viva 1.1+git20150820.1a3d1f680f-1 (amd64 binary) in ubuntu wily

 Viva implements alternative trace visualization techniques for the
 analysis of parallel and distributed applications. The tool also serves
 as a sandbox to the development of new visualization techniques.
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 Current features include:
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  - Temporal integration using dynamic time-intervals
  - Spatial aggregation through hierarchical traces
  - Interactive Graph Visualization with a force-directed algorithm, with viva
  - Squarified Treemap to compare processes behavior on scale, with vv_treemap