Run-time extensibility and librarization of simulation software
  Build-time configuration and environment assumptions are hampering progress and usability in scientific software. That which would be utterly unacceptable in non-scientific software somehow passes for the norm in scientific packages. The community needs reusable software packages that are easy use and flexible enough to accommodate next-generation simulation and analysis demands. 
Jed Brown and Matthew G. Knepley and Barry F. Smith
cs.SE cs.CE cs.MS