There is something happening about this calculation with NWCHEM6.8 on macOS High Sierra with GCC 7.2.0, mpich 3.2.1 and Xcode 9.2.
First, the calculation using augccpvtz could not converge
...
Entering Davidson iterations
Unrestricted
Iter NTrls NConv DeltaV DeltaE Time
     
1 10 0 0.15E+00 0.10+100 328.3

tddft_diagon: negative excitation energy 0
.
Second, the one with augccpvdz was successful for one time
...
Root 1 a 0.000479490 a.u. 0.0130 eV
<S2> = 0.9633
,
...

Root 2 a 0.000721485 a.u. 0.0196 eV
<S2> = 0.9615

...

Root 3 a 0.001720248 a.u. 0.0468 eV
<S2> = 0.8747

...
Root 4 a 0.010212053 a.u. 0.2779 eV
<S2> = 0.7555

...
but failed when the computer was restarted using the same input
...Entering Davidson iterations
Unrestricted
Iter NTrls NConv DeltaV DeltaE Time
     
1 10 0 0.15E+00 0.10+100 151.3
2 30 0 0.79E01 0.35E01 205.2

tddft_diagon: negative excitation energy 0


current input line :
29: task tddft energy

...
Finally, the repeated CIS TDDFT calculations had a small difference with augccpvdz:
1. ...
Root 1 a 0.008091830 a.u. 0.2202 eV
<S2> = 0.9172

...

Root 2 a 0.008125684 a.u. 0.2211 eV
<S2> = 0.9172

...
2. ...
Root 1 a 0.008077333 a.u. 0.2198 eV
<S2> = 0.9181

...
Root 2 a 0.008115493 a.u. 0.2208 eV
<S2> = 0.9181

...
GAMESS gave 0.048eV, 0.048eV and 0.284eV,which could be reproduced from different versions.
Do these mean the rohf calculation using NWCHEM was very unstable in this case and a patch is required?
Thanks a lot.
Very Best regards!
