Issues in the development of early solution facilities for very large macroeconometric models

The SIMSYS simulation system was first developed at the Economic Council of Canada in 1970/71 to support its development of the large-scale CANDIDE econometric model. The size of the model raised many concerns, particularly about the "correctness" of the model implementation, equation ordering and run-time performance. This article describes the modeling language and coding scheme used in SIMSYS to address these issues.