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                 Just Got Here 
                
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		                        | 6:41:42 PM - Thu, Nov 4th 2010  | 
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		                    Similar problems
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		                        Hello! 
 
Firstly, I have to say that I got a similar problem, not the answer for the last post... sorry.. 
 
In my case I'm doing a RI-MP2 geometry optimization of a complex containing Ni, C, O and H atoms. 
 
I did a first optimization with the cc-pVDZ basis set for the light atoms and 6-31G (and in a further calc. with 6-31G** basis,)  for the Ni atom successfully (a total of 388 basis functions). 
 
The problems arise when I change to a bigger basis set for the Ni atom.   
If I change to the cc-pVDZ (specified explicitly and available from http://tyr0.chem.wsu.edu/~kipeters/basis.html) or cc-pVTZ basis set (specified explicitly or with the line "Ni  library  cc-pVTZ"), the process fails with the error: 
 
1:Bus error, status=: 7 
(rank:1 hostname:cl1n006 pid:28807):ARMCI DASSERT fail. signaltrap.c:SigBusHandler():213 cond:0 
4:Bus error, status=: 7 
2:Bus error, status=: 7 
(rank:2 hostname:cl1n006 pid:28813):ARMCI DASSERT fail. signaltrap.c:SigBusHandler():213 cond:0 
(rank:4 hostname:cl1n006 pid:28809):ARMCI DASSERT fail. signaltrap.c:SigBusHandler():213 cond:0 
"cokni_1h.out" 819L, 29602C   
 
There is not input errors and was the same for a single point energy or  a DFT (XC   B3LYP) trial. 
 
- could be the problems related with the total memory specification? 
I'm using the line: 
 
memory 30000 mb 
 
- Is there some rule to estimate the optimal amount of memory required for a calculation in NWchem? 
 
Thanks in advance for any suggestion! 
 
Good luck!  
 
NWchem is running on a SGI-Altix cluster compiled with the intel fortran compilers, Infiniband support and MPI.
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