Dear all, Question on openmc program using custom_source example

[paulromano]

I suspect the error you’re seeing may be due to the same problem described here:

How to use external source file in fixed source calculation?

The internal format used for source sites recently changed (there is now a surf_id attribute that is used for surface source reading/writing). I’m not sure how you are creating the ADS source file, but if you are using openmc.write_source_file, you should make sure that you use that function from the same version of OpenMC that is used to eventually read the source file. Either way, running into a segfault is not ideal behavior. I’m working on adding a check on the source file format to ensure …

If you’re recently updated OpenMC, you may need to regenerate the source file using the write_source_file function.