Folks, This August 2001 paper by Jim Miller and me summarizes our early VTK testing: http://marchingcubes.org/images/9/90/VTKExtremeTesting.pdf This 2005 talk by Dan Belzek presents some background on VTK Testing: http://www.na-mic.org/Wiki/images/b/b7/Dart2.ppt It also shows the first vtk dashboards... Bill