How to use LibSim in-situ visualization?

[lj-cug]

Dear Developers and Users:
I have built visit-3.4.2 with LibSim module both in Windows. Now I test sim4.C example code, but I cannot succeed to link visit with the simulation code. sim4 running has generted .sim2 file in my DOCUMENTS directory.
001762743259.sim4.sim2 is following as:
'
host DESKTOP-C14ASF6
port 5609
key b2ca1798e7eb49be
path E:/Post-processing/visit/Simulations
comment C prototype simulation connects to VisIt
'
But when I run the sim4 simulation, "VisIt did not connect" showed. I found "VisItAttemptToCompleteConnection()" always gave 0 in Windows, but it's OK in Ubuntu OS.

I cannot find any detailed LibSim operation video, and the visit manual also doesn't supply any operational steps guide in Windows OS.
Yours,
Li Jian
China University of Geosciences

[biagas]

sim4 example isn't really a full-fledged example. It is an expansion of steps for instrumenting a simulation found in our GettingDataIntoVisit maunal.

I recommend trying perhaps the mandelbrot example instead, just to get a feel for running the simulation and connecting VisIt to it.
The mandelbrot example will run one 'step', then halt itself so you can connect with VisIt.
When Visit connects you can add a Pseudocolor plot of 'mandelbrot'. Then you can call step from the simulations command line to advance 1 timestate in the simulation.

When you run the sim, add -dir C:\path\to\visit to its command line.

For debugging, I recommend adding -trace tracefile to the simulation's command line (you can name the tracefile anything you want), and -debug 5 to VisIt's command line.

[lj-cug]

Thank you for your help! Now I can run mandelbrot example. I find the performance of LibSim between Windows and Linux OS is different. The running in Ubuntu is normal, but after about 10 running steps I have to clear cache in Simulation panel, otherwise in-situ visualization and simulation will be blocked? I don't know the reason.
By the way, is there any introduction about Simulation (C and Fortran) example code?