[netCDF #SID-581519]: posix_fadvise
- Subject: [netCDF #SID-581519]: posix_fadvise
- Date: Thu, 21 Apr 2016 09:51:46 -0600
The python netcdf4 library wraps the netcdf4 C library. The C library handles
all of the calls that open files, so there is no Python file object available
to use with posix_fadvise() in Python.
As far as I can tell, I don't think what you want to achieve would be possible.
> Linux provides the function posix_fadvise to instruct the kernel to
> discard the IO cache for an open file after use with the parameter
> POSIX_FADV_DONTNEED. This is useful if many large files are read in
> (only once). I can use fadvise with files opened with a python "open"
> statement but not with the file objects returned by netcdf4.Dataset.
> m=fallocate.posix_fadvise(f, 0, siz,fallocate.POSIX_FADV_DONTNEED)
> Can you instruct me how to use fadvise with netcdf files?
Ticket ID: SID-581519
Department: Support Python