Computational Efficiency vs. Maintainability and Portability. Experiences with the Sparse Grid Code SG++. 2016 Fourth International Workshop on Software Engineering for High Performance Computing in Computational Science and Engineering (SE-HPCCSE), 17--25, IEEE, Salt Lake City, UT, USA, November 2016. [PUMA: Computational_modeling Hardware Programming Software_engineering Software_quality Usability computational_efficiency computational_maintainability computational_portability design_decisions from:leiterrl software_maintenance software_quality sparse_grid_code_SG++] URL