OpenMC aborts when attempting to plot

User Support
1

I’m having issues plotting a hexagonal lattice on openMC. it gives me the error:

Traceback (most recent call last):
File “/Users/christianandresclaro/code/matt_test”, line 99, in
plot = hex_universe.plot(pixels=(600, 600), color_by=‘material’, colors={fuel_kernel: ‘black’, coolant: ‘yellow’})
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/Users/christianandresclaro/miniconda3/envs/openmc_new/lib/python3.12/site-packages/openmc/universe.py”, line 446, in plot
model.plot_geometry(False, cwd=tmpdir, openmc_exec=openmc_exec)
File “/Users/christianandresclaro/miniconda3/envs/openmc_new/lib/python3.12/site-packages/openmc/model/model.py”, line 828, in plot_geometry
openmc.plot_geometry(output=output, openmc_exec=openmc_exec)
File “/Users/christianandresclaro/miniconda3/envs/openmc_new/lib/python3.12/site-packages/openmc/executor.py”, line 154, in plot_geometry
_run(args, output, cwd)
File “/Users/christianandresclaro/miniconda3/envs/openmc_new/lib/python3.12/site-packages/openmc/executor.py”, line 125, in _run
raise RuntimeError(error_msg)
RuntimeError: OpenMC aborted unexpectedly.

I am running this on a mac and was originally having issues with cross sections. I believe this was remedied but now it wont generate plots. when i exclude the following lines:

plot = hex_universe.plot(pixels=(600, 600), color_by=‘material’, colors={fuel_kernel: ‘black’, coolant: ‘yellow’})

plt.show()

the program compiles just fine.

2

Hi @cclaro and welcome to the community! What output do you see if you try to run this from a terminal?

3

Can you elaborate on what you mean when you say running from a terminal? I am running the program off vs code which gives an output from its own built in terminal. This is the output I get in the terminal within vs code with the plotting section of the code removed.

christianandresclaro@Christians-MacBook-Pro-2 code % /Users/christianandresclaro/miniconda3/envs/openmc_new/bin/python /Users/christianandresclaro/code/matt_test
HexLattice
ID = 7
Name = hex_geom
Orientation = y
# Rings = 10
# Axial = None
Center = (0.0, 0.0)
Pitch = (1.88,)
Outer = 6
Universes
3
1 1
1 1 1
3 3 1 3
1 1 1 3 1
1 1 3 1 1 1
3 3 1 3 3 1 3
1 1 1 1 1 1 3 1
1 1 3 1 1 1 1 1 1
3 3 1 3 3 1 3 3 1 3
1 1 1 1 1 3 1 1 3
1 3 1 1 3 1 1 1 1 1
1 3 3 1 3 3 1 3 1
1 1 1 1 1 1 1 3 3 1
3 1 3 1 1 1 1 1 1
3 1 1 3 2 2 3 1 1 3
1 1 1 1 6 1 3 1 3
1 3 3 1 6 6 1 1 1 1
1 3 1 2 6 2 1 3 1
1 1 1 1 6 6 1 3 3 1
3 1 3 1 6 1 1 1 1
3 1 1 3 2 2 3 1 1 3
1 1 1 1 1 1 3 1 3
1 3 3 1 1 1 1 1 1 1
1 3 1 3 3 1 3 3 1
1 1 1 1 1 3 1 1 3 1
3 1 1 3 1 1 1 1 1
3 1 3 3 1 3 3 1 3 3
1 1 1 1 1 1 3 1 1
1 3 1 1 1 1 1 1
3 1 3 3 1 3 3
1 1 1 3 1 1
1 3 1 1 1
3 1 3 3
1 1 1
1 1
3
(0, 0)
(0,23) (0, 1)
(0,22) (1, 0) (0, 2)
(0,21) (1,17) (1, 1) (0, 3)
(0,20) (1,16) (2, 0) (1, 2) (0, 4)
(1,15) (2,11) (2, 1) (1, 3)
(0,19) (2,10) (3, 0) (2, 2) (0, 5)
(1,14) (3, 5) (3, 1) (1, 4)
(0,18) (2, 9) (4, 0) (2, 3) (0, 6)
(1,13) (3, 4) (3, 2) (1, 5)
(0,17) (2, 8) (3, 3) (2, 4) (0, 7)
(1,12) (2, 7) (2, 5) (1, 6)
(0,16) (1,11) (2, 6) (1, 7) (0, 8)
(0,15) (1,10) (1, 8) (0, 9)
(0,14) (1, 9) (0,10)
(0,13) (0,11)
(0,12)

4

Ok, just wasn’t sure if there was more information about the error that was showing up in the terminal (in case you were running from a Jupyter notebook). Hard to say what’s going on based on the information given. Are you able to share a minimal example script that someone can try to reproduce the error with?

5

I’m currently reinstalling everything from source to make sure everything is properly configured. I can provide a sample script if this doesn’t solve the issue. Let me get back to you once this is complete as we are having some issues

6

It is also worth mentioning this error does not occur when running on one of my peers laptops. This only occurs on my own device.