Unknown error? 'mo_r_and. _r2: g_x1m 4699350'

[Jenni]

I have recently been doing some benchmarking of different functionals for singlet-triplet energy gaps. For 1 out of the 10 molecules I'm testing, the NWChem output file is not complete and displays this error message at the end: 

This happens both with the PBE0 and B3LYP functionals. I cannot see anything wrong with the molecule in particular. Does anyone know what this error means? 

[Edoardo Aprà]

It is likely to be a memory error.

Please increase the memory input line.

For example

start my_input

memory total 2500 mb

geometry

...

https://nwchemgit.github.io/Memory.html

[Jenni]

Thank you Edoardo this solved my issue :)