The paper is devoted to the problem of the automated construction of parallel programs. In the paper ParSolGen (Parallel Solvers Generator) - a tool that automatically constructs a highly efficient parallel program from a given numerical algorithm description is presented. It classifies the input numerical algorithm description written in ParSolGen language, determines the class it potentially belongs to and constructs the parallel program using the corresponding domain-specific parallel program construction module. This enables ParSolGen to employ well-known manual parallel programming techniques in the process of the automated parallel program construction. This approach improves the performance of the automatically generated parallel programs, as confirmed by performance tests.