[gmx-developers] flushing files

Roland Schulz roland at utk.edu
Tue Oct 12 23:26:27 CEST 2010

Erik, Berk,

you added flushing of trn, xtc and ern before the checkpointing
functionality had been added. The additional flush can add quite a bit
of unnecessary time especially with parallel file systems and/or MPI-IO. Am
I right that with checkpointing it is not necessary anymore?  The
checkpointing is flushing the file before writing the checkpoint.
Also gmx_fio_check_file_position is flushing the file before checking
whether the file is too large for gmx_off_t.


ORNL/UT Center for Molecular Biophysics cmb.ornl.gov
865-241-1537, ORNL PO BOX 2008 MS6309
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