I have been informed that (mostly academics and hobbyists I suspect) are working on a new version. Some gems
My limited knowledge of stochastic processes is that it still should abide by some given laws/rules and using thread races to add "noise" is not ideal.
2. Background is that I was looking at setting up some training for our University HPC service on Intel Inspector and spotted OpenMP was used in this code and like to learn approaches researchers take so thought it would be a relevant example for users.
3. Multi-threaded testing is a harder problem, and Intel Inspector - when properly configured - does the job very well, so I can happily recommended it for the training you have in mind. We do a fresh exhaustive test on covid-sim whenever changes are pushed that concern threaded sections. Proper configuration, unfortunately, requires maximum resources and overheads, and anything less than that tends to return a lot of false positives - eg, reported memory leaks that are demonstrably not there in hello-world type examples. Usually though, true errors will be detected as well as the false reports, so if you know what to look for, the cheaper analyses of Inspector are still useful.
4. We don't really mind which thread gets there first; the differences caused by this will sometimes cause no difference, or sometimes cause a very slightly different arrangement of people to work-places when the population is initialised. The simulation is stochastic anyway (ie, we generate many different realisations using different random seeds), and the difference caused here by the race merely causes a different (equally valid) realisation.
Looks as if the problem is almost solved.
Caveat: The OpenMP C and C++ application program interface lets you write applications that effectively use multiple processors. Visual C++ supports the OpenMP 2.0 standard.
BTW current version > 4.5.