CCSD(T) error doublet state


Clicked A Few Times
Dear NWChem users
                             I am trying to run CCSD(T) single point calculations on one of my small organic radicals, the job is terminating with the following error"

tce_ao2e: fast2e=1
half-transformed integrals in memory

2-e (intermediate) file size =     28442452050
2-e (intermediate) file name = ./vinyoxy-rad-3c.v2i

=======================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= EXIT CODE: 6
= CLEANING UP REMAINING PROCESSES
= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES
=======================================================================
YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Aborted (signal 6)
This typically refers to a problem with your application.
Please see the FAQ page for debugging suggestions

I used the following input file:


start vinyoxy-rad-3c

memory stack 1000 heap 800 global 60000 mb

charge 0

geometry units angstrom
C -0.748514 0.354624 -0.000173
H -0.592363 1.448072 -0.000500
O -1.882308 -0.108046 0.000211
C 0.430000 -0.447104 -0.000250
H 0.285935 -1.520210 -0.000326
C 1.796670 0.119490 0.000139
H 2.359786 -0.217063 -0.874275
H 1.777087 1.208428 0.000047
H 2.359087 -0.216922 0.875066
end

basis
H library aug-cc-pvtz
C library aug-cc-pvtz
O library aug-cc-pvtz
end

scf
DOUBLET
UHF
thresh 1e-9
tol2e 1e-9
end

TCE
freeze core
ccsd(t)
end

task tce energy


Any suggestion to troubleshoot this error will be immensely appreciated.

Regards

Gets Around
How many nodes are you using?
Is this running on 4 nodes, each with 60 GB of global memory? That seems like it would be about right, since the 2 electron intermediate storage alone needs nearly 230 GB (8 * 28442452050). If it's less than 4 nodes you definitely have too little memory. If you can't run with more memory you can try changing the IO scheme in the TCE block to one of the file-based ones (slow), or you can try the advice here:

http://www.emsl.pnl.gov/docs/nwchem/nwchem-support/2008/05/0054.Re:_NWCHEM_Large_memory_TC...

Clicked A Few Times
Thanks so much. I will try with these modifications.

Clicked A Few Times
Thanks so much. I will try with these modifications.


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