Since I was having problems getting rational results with NMR for my large system which has a non-orthogonal cell, and all the nmr regtests pass but have orthogonal cells, I tried ice 1h which is hexagonal. For ice I cannot even get the linear response to converge. It starts converging and then blows up. This could be a separate problem from what I have with getting large values **** for the NMR shifts, or could be related. But being a small system is maybe easier to diagnose. I don't see what I can change other than the preconditioner and the gap, which I played with, or the basis which I did not. Any help is appreciated. Anyway this runs fast. Please see attached.<div><br></div><div>Sincerely,</div><div><br></div><div>Ron Cohen</div><div><br></div>
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