Different burnable materials in TRISO for depletion

Hi All,

I am working on TRISO fuel and would like to set several different burnable materials for depletion. But somehow OpenMC doesn’t do any calculation when setting diff_burnable_mats=True. The job keeps running but there is no output, not even summary.h5.

If I remove the command, OpenMC will start the depletion.
What would be the caused of this?