NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.

To learn about what's going on, see About the Archive Site.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: 19981016: ?aaa temp netCDF Files

>To: address@hidden
>From: "R. Bauer" <address@hidden>
>Subject: ?aaa temp netCDF Files
>Organization: Forschungszentrum Juelich Gmbh (KFA)
>Keywords: 199810160742.BAA14158
>
> Dear support team!
>
> What happens is:
>
> I have a netCDF File and I am adding some parameters.
> Therefore netCDF duplicates the original File in e.g. "aaa-File" at the
> same directory
> After adding the "aaa-File" will be renamed to the original file name.
>
>
> What I like to know is:
> Can I determine where the "aaa-File" should be created?
> Because if I have a really fast Harddisk locally and the data is
> originally on a slow ethernet, the write access is reduced to ethernet
> speed and thats really not fast.
>
> What I like to have is:
> I like to have the control where "aaa-Files" will be created, is this
> possible?
>
> Regards
>
> Reimar Bauer
>
>
>
>
> --
> R.Bauer
>
> Institut fuer Stratosphaerische Chemie (ICG-1)
> Forschungszentrum Juelich
> email: address@hidden

It sounds like you are using netcdf-2 rather than the latest sources
since netcdf-3 does the modification in place. The new version does not
make a copy of the file at all.

If you have the netcdf-2 sources, look at src/libsrc/file.c,
function NCtempname(), to see what is going on. You could
specify another directory in the code there.

However, I don't think you can do what you want
unless your system supports 'rename()' across filesystems.
See the manual page for the 'rename()' system call.

-glenn