2020 System Dynamics Conference

Welcome to the Ventana Systems SD Conference landing page. We look forward to seeing you virtually!

Ventana Systems, Inc. Ventana helps clients solve hard problems in strategy, operations, marketing and public policy. We integrate models and data to provide insights that machine learning and systems thinking alone can’t access. These pages give some examples of our work and describe our approach.
Vensim Vensim is an industry standard simulation tool, enabling large models with extreme speed and serious data management, at the center of a large ecosystem, and supporting education with free PLE:
Ventity Ventity is a new hybrid modeling tool, with a natural data architecture, dynamic creation of new entities, sparse network support, and elegant graphics:


The ISDC schedule page is here and the full conference tabular schedule is here.

Office Hours

Want to learn more about Ventana, Vensim or Ventity? Visit our Zoom room during our office hours.

  • Monday
    • 14:30-18:00 CEST
    • 0:00 – 1:00 CEST (after Midnight, or Tuesday AM)
  • Tuesday
    • 9:00-12:00 CEST
    • 15:00-18:00 CEST
  • Wednesday
    • 9 am-12 pm CEST
    • 15:00-18:00 CEST

Vensim/Ventity User Group Meeting

Tuesday, 18:00-18:30


Model Analysis with Vensim – Thursday, 8:30 CEST

Please arrive with Vensim installed on your machine to avoid delays (or share with a friend). If you already have Vensim PLE, you can use that, though you may wish to use the DSS trial below for a few extra features.

Materials: Vensim Model Analysis 2020.zip

Update: modified models from the session: DLMhogs5-modified.zip

There’s a video of a similar World Dynamics critique in the Vensim library.

Getting Started with Ventity – Friday, 10:30 CEST

Please arrive with Ventity installed on your machine to avoid delays (or share with a friend).

Materials: Ventity Intro 2020.zip


Vensim PLE – free for educational and personal learning use, including the workshop. You can always download a copy at https://vensim.com/free-download/ . We ask that commercial and government users purchase an inexpensive license for uses other than conference workshops and software evaluation.

Vensim DSS trial for the workshop and exploring advanced features of Vensim – good for 60 days. Use the following license key:

Company : Limited Time Evaluation
Unlock code : 9IYTM-4XDOD-ALL8W-3W

Download DSS using the company name and code as above.

Ventity is unlocked through September – you can download a copy from https://ventity.biz/update/ . No license is needed through September. Note that Ventity requires Windows (emulators are fine), and Win7 compatibility can’t be guaranteed due to End-of-Life issues.