This paper presents a new approach to the characterization of analog circuits based on the visual data-flow
language Cantata which has been augmented with some application specific functions and control operators.
For the reduction of execution time a new data-flow scheduler for a distributed environment is proposed. The
scheduler takes information about usable workstations and their performance, program availability and the
actual workloads into consideration to achieve a load balancing which results in shorter execution times. This
process is fully automated.