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For the table below, the MPI version of the PATMOL code was used to compute the ground state energy of CO2 in a 10s6p2d/5s3p2d basis.
| # Processors | Execution Time (seconds) | |
|---|---|---|
| Gamera | SGI Origin 2000 | |
| 1 | 77.3 | 70.6 |
| 2 | 41.0 | 35.7 |
| 3 | 30.7 | 25.7 |
| 4 | 25.0 | 19.0 |
| 6 | 18.0 | 13.7 |
| 8 | 13.8 | 10.8 |
| 12 | 10.5 | 8.2 |
| 16 | 8.2 | ??? |
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