CCSD(T) computation


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Just Got Here
I am a new NWCHEM user.
I want to compute the CCSD(T) energy of a system composed up to
20 atoms, employing the Dunning series of basis set.
I made some efforts, however all of them failed due to
the production of large files.
Is there anyone who could help me, offering some
hints, in order to overcome this issue.
Thanks in advance.
Aggelos Avramopoulos