[egwuab]

How can I run the surface and volume mesher in the cluster instead of running it with GUI in PC?

[kguntur]

you need to use batch mode. There are commands given in starccm+ user guide. it goes something like
installation directory/starccm+ -batch <macro file> <.sim file>

You can record a macro to do the meshing.

[egwuab]

Do you mind to tell me how to generate the macro file?

[me3840]

I use the attached macro often to do this.

It will execute all part operations, surface mesh, and volume mesh, saving in between each step.

package macro;
import java.util.*;
import star.common.*;
import star.meshing.*;

public class meshAllTheThings extends StarMacro {
    
    public void execute () {
        Simulation sim = getActiveSimulation();
        
        String simPath = sim.getSessionPath();
        
        sim.get(MeshOperationManager.class).executeAll();
        
        sim.saveState(simPath);
        
        MeshPipelineController MPC = sim.get(MeshPipelineController.class);
        
        MPC.generateSurfaceMesh();
        
        sim.saveState(simPath);
        
        MPC.generateVolumeMesh();
        
        sim.saveState(simPath);

    }
    
}

[egwuab]

im new to this, could you tell me how i include the macro in my job script for cluster?

[kguntur]

save the above script as "meshAllTheThings.java". It is necessary that the java file name and the public class in the java file are the same.
Save that file in the same location as your sim file (not necessary, but easier).
Then in your command prompt (in windows) or command line (in linux) go to the directory where the above files are saved and type the following.

<cd-adapco installation directory>/starccm+ -batch <meshAllTheThings.java> <yourfile.sim>

change the commands in <> according to your settings.

Hope this helps.

[egwuab]

hi, i tried the job and add the .java file you suggested. However, it didnt run any mesh.
Here is how I call my starccm job

starccm+ -rsh ssh -batch <meshAllTheThings.java> -np $NSLOTS -machinefile $TMPDIR/machines starccm.sim

Could you point out the problem?
===========================================

i figured it out and now it can run in the cluster. thank you so much for your help Kris

[egwuab]

Hi Kris,

If I already set up the physics and termination time of the simulation, will it run after it meshed the part? or I need to include another commands in the macro?

Regards

[me3840]

Your original question was how can you mesh on a cluster. The macro I put here does just that and only that. If you want it to also include running, you can record yourself hitting the run button and add that code on to the macro.

[egwuab]

okay, thank you so much for your help !

[egwuab]

I tried to run after the meshing but couldn't run it.
is there any macro command to run the CFD simulation.

i tried to run like this but it doesnt work.
starccm+ -rsh ssh -batch -np $NSLOTS -machinefile $TMPDIR/machines starccmfile.sim

[me3840]

If you want help you need to be more descriptive.

"I tried to run after the meshing but couldn't run it. "

Why? What happened? Was there an error? Did the machine catch fire? We have no idea, you have to tell us.