DSH is a Haskell library for database supported program execution. It turns the database into a coprocessor for the Haskell runtime. Compilation of Haskell code for the database is a multi-step process. One of the intermediate languages is the vector algebra which is of interest to get a better understanding of the performance behaviour of DSH. We have implemented an in memory execution environment which executes vector algebra programs natively. The execution environment allows us to investigate the performance behaviour of each vector operation individually and without database context.