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mp2 calculation and memory problem.

samback
seoin0226@gmail.com

�1 �$contrl scftyp=rhf mplevl=2 runtyp=gradient coord=unique �$end
�2 �$system parall=.true. mwords=100000  memddi=8000 �$end
�3 �$elpot output=punch $end
�4 �$guess guess=huckel $end
�5 �$data
�6 2-dimer CASPT2/6-311g+(3df) for top2 layer si (from 6-311g++(3df,2p)), 6-31g(d) for others (www.emsl) symmetric
�7 Cnv 2
�8

Hi, I am doing mp2 calculation and have a problem.

My computing system has 24GB RAM.

However I increase the memory(mwords and memddi), it says memory is insufficient.

Below is the last part of the log file.

Thank you in advance.

251  DDI Process 0: error code 911
252  DDI Process 0: shmget returned an error.
253  Error ENOMEM: Not enough memory to allocate 64160000000 bytes of shared memory.
254  ddikick.x: application process 0 quit unexpectedly.
255  ddikick.x: Fatal error detected.
256  The error is most likely to be in the application, so check for
257  input errors, disk space, memory needs, application bugs, etc.
258  ddikick.x will now clean up all processes, and exit...
259  ddikick.x: Sending kill signal to DDI processes.
260  ddikick.x: Execution terminated due to error(s).
261 unset echo

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