# QC output files are read twice into the same OBMol

**URL:** <https://discuss.avogadro.cc/t/qc-output-files-are-read-twice-into-the-same-obmol/1769>\
**Category:** Development\
**Created:** [February 28, 2010, 10:36am UTC](https://discuss.avogadro.cc/t/qc-output-files-are-read-twice-into-the-same-obmol/1769 "2010-02-28T10:36:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Konstantin\_Tokarev](https://discuss.avogadro.cc/letter_avatar_proxy/v4/letter/k/ecd19e/32.png) [@Konstantin\_Tokarev](https://discuss.avogadro.cc/u/Konstantin_Tokarev)\
**Post date:** [February 28, 2010, 10:36am UTC](https://discuss.avogadro.cc/t/qc-output-files-are-read-twice-into-the-same-obmol/1769/1 "2010-02-28T10:36:11Z")

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## QC output files are read twice into the same OBMol. It seems to to be very effective (escpecially for long GAMESS outputs)

Regards,  
Konstantin

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**Author:** ![ghutchis](https://discuss.avogadro.cc/user_avatar/discuss.avogadro.cc/ghutchis/32/456_2.png) [@ghutchis](https://discuss.avogadro.cc/u/ghutchis)\
**Post date:** [March 1, 2010, 5:20pm UTC](https://discuss.avogadro.cc/t/qc-output-files-are-read-twice-into-the-same-obmol/1769/2 "2010-03-01T17:20:09Z")

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> QC output files are read twice into the same OBMol. It seems to to be very effective (escpecially for long GAMESS outputs)

Yes, there’s clearly an optimization in MoleculeFile – particularly for these one-molecule data files. We should save the first molecule read, which would prevent the need to re-read the file.

-Geoff