Comparison of Diva and Diana

This page provides a detailed comparison between Diva and Diana.

Modeling

mdl2diva:

• produces FORTRAN code for Promot models

mdl2diana:

• produces C++ model code
• generation of higher order model derivatives with respect to state variables and model parameters

Simulation

Diva:

• comprehensive list of dynamic solvers (SDASSL, SDASAC, LIMEXS, ...)
• models simulation with discrete part (Petri nets)

Diana:

• simulation with Sundials/IDA, ODESSA, DASPK solvers
• only continuous models (Petri nets simulation is under development)

Non-linear Analysis

Diva and Diana:

• One-parameter continuation of steady-state solutions
• Continuation of limit points
• Periodic obits continuation

Diana:

• Singularities of higher co-dimension (isola, hysteresis, pitchfork, winged cusp)
• Hopf point continuation
• Periodic orbits continuation with the recursive projection method (large-scale dynamical models with low-dimensional slow dynamics)
• Detection of periodic orbits bifurcations (limit point, period doubling, torus bifurcation)

Optimization

Diana:

• genetic algorithms for global optimization

Extensibility

Diana has a python interface for the comfortable implementation of additional functionality, e.g. implementation of state estimators (Kalman filter).