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

[netCDF #NNS-961385]: nf90_put_var slows down erratically

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [netCDF #NNS-961385]: nf90_put_var slows down erratically
  • Date: Tue, 22 Jul 2008 06:52:46 -0600
> Russ,
>
> I got it past the nf90_enddef "HDF error" by first storing the
> chunking and extend_increments arguments in array variables, and then
> passing those as arguments.  Of course, I have no idea why this should
> matter, and it only gets me past nf90_enddef if I compile with -g.  If
> I do this, then the test code slows down severely on nf90_put_var --
> it is taking 9 seconds to write a single 32x64x64 array, which means
> it takes about 3 minutes to do what netCDF-3 was doing in between a
> fraction of a second and a few seconds.  Of course, it might also be
> writing out all NaN's for all I know.  I'll take another look at this
> tomorrow.
>
> David
>


Howdy David!

It's been some time since your support question, but I have just put in an
important optimization in the netcdf-4 read/write code. Perhaps this might
impact your problems?

Why don't you get a copy of the netcdf-4 snapshot and give it a whirl?

ftp://ftp.unidata.ucar.edu/pub/netcdf/snapshot/netcdf-4-daily.tar.gz

Please let me know if this helps.

Thanks,

Ed

Ticket Details
===================
Ticket ID: NNS-961385
Department: Support netCDF
Priority: Normal
Status: Closed