Building main grid,#geometry_objects_read

[Dave Bédard]

Hi everyone,

I'm trying to use #fractal_box and Pepinski mixing model. Building main grid take a long time, so as recommended, I used #geometry_objects_write to build my model in a HDF5 file. The input file Affaissement_figure23.in is attached and used to build my model.

I made another input file to run my simulation with #geometry_objects_read (Affaissement_figure23.in), but the simulation is two times longer as the grid is built two times instead of one (13 minutes total, 2 min for the simulation vs 6 minutes total, 2 min for the simulation). I thought #geometry_objects_read was not supposed to build the model on every iteration.

I also have some #material with negative conductivity in the material text file created by #geometry_objects_write.  

I don't know what I'm doing wrong, can someone help me?

Thanks,

Dave

[Craig Warren]

Hi Dave,

Did you also use the argument --geometry-fixed? If you don't gprMax will build the model for every model run.

Kind regards,

Craig

[Dave Bédard]

Hi Craig,

No, I didn't use the -geometry-fixed argument. It's much faster now, I don't have to build the geometry every time and I don't need to write geometry object.

Thanks for your quick reply.

Best regards,

Dave