Hi Thomas,

In addition to Jason's advises, I would like to add that if a simulation 
crashes your whole system, it is likely that you are running out of physical 
memory. Unless you are using unstable drivers on your host, which I believe you 
don't, the easiest way to unintentionally crash a system probably is to put a 
memory allocation in a hot loop and forget to free the memory.

You can also consider setting up a VM with a limited amount of memory and no 
swap to sandbox your simulation. You can snapshot that VM right before running 
your debug run to faster recover from crashes.

best,
Gabriel
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