@anakin It looks like the integer overflow fix was merged into the master branch yesterday (Nov 26), so if you run into any further problems with large systems you can update your psi4 source and recompile to see if that helps.
@anakin It looks like the integer overflow fix was merged into the master branch yesterday (Nov 26), so if you run into any further problems with large systems you can update your psi4 source and recompile to see if that helps.