# SPECFEM3D - coffee cup example

**URL:** <https://community.geodynamics.org/t/specfem3d-coffee-cup-example/911>\
**Category:** SPECFEM\
**Created:** [November 19, 2019, 12:26pm UTC](https://community.geodynamics.org/t/specfem3d-coffee-cup-example/911 "2019-11-19T12:26:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![lbrotherson](https://avatars.discourse-cdn.com/v4/letter/l/a9adbd/32.png) [@lbrotherson](https://community.geodynamics.org/u/lbrotherson)\
**Post date:** [November 19, 2019, 12:26pm UTC](https://community.geodynamics.org/t/specfem3d-coffee-cup-example/911/1 "2019-11-19T12:26:47Z")

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Hi,

I’m attempting to run the coffee cup with acoustic fluid example provided in SPECFEM3D’s github ([https://github.com/geodynamics/specfem3d/tree/master/EXAMPLES/coffee\_mug\_with\_fluid\_inside/coffee\_cup\_with\_handle\_CUBIT\_mesh.cub](https://github.com/geodynamics/specfem3d/tree/master/EXAMPLES/coffee_mug_with_fluid_inside/coffee_cup_with_handle_CUBIT_mesh.cub)). There’s no README file so after reading the manual and looking online, I tried this using two methods:

1. Within Trelis 15.0 (cubit) using exportlib.py (e2SEM module), as outlined in the GEOCUBIT experimental github repository ([2 LAYERS: USING GEOCUBIT IN THE CUBIT GUI, DEFINING BOUNDARY CONDITIONS · casarotti/GEOCUBIT--experimental Wiki · GitHub](https://github.com/casarotti/GEOCUBIT--experimental/wiki/2-LAYERS:-USING-GEOCUBIT-IN-THE-CUBIT-GUI,-DEFINING-BOUNDARY-CONDITIONS)) - I followed the example and no mesh is produced, error in Trelis says:

> “AttributeError: ‘str’ object has no attribute ‘get\_block\_id\_list’” in block definition.

1. On the command line using cubit2specfem3d.py - I’ve added symbolic links to them to indicate the path to my local installation of Trelis and run with the name of .cub mesh file but the error says:

> error importing cubit, check if cubit is installed  
> Traceback (most recent call last):  
> File “./cubit2specfem3d.py”, line 174, in   
> from utilities import get\_cubit\_version  
> ImportError: No module named utilities

I’ve would attach versions of the python files I used in both methods but I can’t because I’m a new user. Any help would be appreciated.

Thanks,  
Louisa