Monday 22 February 2021

IBM Engineering Rhapsody Tip #94 - Downloading and installing Rhapsody 9.0.1 (Intermediate)

In my previous video, I covered adding Cygwin/gcc compiler to an existing Rhapsody installation. This video is actually the precursor to that, and covers installing the latest Rhapsody 9.0.1 (to date) without a compiler. The actual steps you may choose to use for your installation may different. However, I point out a couple of important things. Firstly, how the TELELOGIC_LICENSE_FILE environment variable is used by Rhapsody to find either a license server or a FlexLM license file, and secondly how the rhapsody.ini file is used by Rhapsody to determine default edition. I also create a simple test project that can be used to verify whether your compiler is installed correctly (actually the steps for doing this are in the previous video #93).

SysML v2 2021-01 Incremental Release

For those who may be interested:

Incremental release 2021-01 of SysML v2 is now available at

This release includes language support for filtering of elements imported into a package (“smart packages”), enhanced support in the Tom Sawyer visualization tool to allow mixed views on a diagram, and a prototype implementation of pagination of return data for one API endpoint.

Complete release notes can be found at the links below.

SysML v2 Pilot Implementation:

SysML v2 API and Services:

Updated drafts of the specification documents and training material can be found at

Thursday 11 February 2021

IBM Engineering Rhapsody Tip #93 - Adding Cygwin/gcc compiler to simulate systems (Advanced)

Always interested in new ideas. This ones actually at the suggestion of Bruce Powell Douglass. One of the questions he gets asked a lot...

You may have installed and used Rhapsody for UML/SysML for a while just drawing diagrams, only to discover later on that there are more advanced executable MBSE methods such as Harmony/SE and my ROCKETS-based modification of it (one of my passions). This narrated video covers what you need to do to your installation in order to extend it to simulate systems or compile C++ code down the line. 

At this point you will discover that you need to install a C++ compiler but, as the video highlights, it's possible to install this compiler after Rhapsody, without having to reinstall Rhapsody. In this video, I demonstrate by going through all the steps to install the minimal parts of the open source Cygwin/gcc compiler for system simulation purposes. I also show steps for verifying the gcc compiler is working, recompiling the framework (and what this means), and testing it with a model. Hope it helps.

SysML v2 Demonstration session from the INCOSE Internal Workshop

For those that way inclined, INCOSE UK put out an interesting link to a SysML V2 video last week. I thought I'd publish it here. This is a recording of the SysML v2 Demonstration session held on 1 February 2021 at the INCOSE International Workshop available for streaming here. The video can also be downloaded from this page. This is a 2-hour session including a demo of the SysML v2 language pilot implementation by Ed Seidewitz and a demo of the SysML v2 API and services pilot implementation by Manas Bajaj.