[phenixbb] advice for speeding up cif_as_mtz

Eric Williams ericwilliams at pobox.com
Tue Sep 18 16:53:03 PDT 2012

It seems that the location of Phenix does matter (at least on my system). I
ran cif_as_mtz (from 1.8.1-1155) on 3a0n, using only the "--merge" switch.
Running from the CIFS mount, it took ~5 minutes. Running from the local
file system, it took ~21 seconds. The CIF file was on the local file system
in both experiments.



On Mon, Sep 10, 2012 at 3:51 PM, Nathaniel Echols <nechols at lbl.gov> wrote:

> On Mon, Sep 10, 2012 at 12:31 PM, Eric Williams <ericwilliams at pobox.com>
> wrote:
> > I'm running it on a CIFS-mounted disk. Phenix and the data are located on
> > the same disk, though.
> It doesn't matter where Phenix is - the IO overhead from reading the
> CIF and writing the MTZ could be substantial though.  Try running a
> few jobs with files on a local disk and see if that goes faster.
> -Nat
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