Re: [ferret_users] unexplained hang during list/format=cdf

[Keith Lindsay <klindsay@xxxxxxxx>]

Hi,

Thanks for the suggestion. Unfortunately it doesn't change the behavior.

Since I first email, I have tried the script on another Linux system 
that has different versions of ferret installed. I find that the script 
does not hang when I run with

        FERRET v6.1
        Linux(g77) 2.6.9-22. - 03/26/08

On this other system, the script does hang with

        FERRET v6.6
        Linux(gfortran) 2.6.9-89.0.20.ELsmp - 04/06/10

So while I have a workaround for now it is worrisome that the hang is 
occurring with the more recent versions of ferret.

The build that works appears to be built with g77 while the more recent 
builds are with gfortran. That may be a red herring.

With the configuration that works (v6.1 g77), I am getting a NOTE 
message about some global character metadata whose length exceeds the 
2048 maximum character. I don't know if this is causing fatal 
problems for the more recent versions. This may be a red herring.

Keith

On Wed, 16 Mar 2011, William S. Kessler wrote:

> Try removing the quotes from "cdf" in the statement:
>
> > list/clobber/file="testfile"/format=cdf sfco2_int, sfco2_int_ocn, 
> > sfco2_int_lnd
>
> or simply:
>
> save/file=testfile.cdf/clobber sfco2_int, sfco2_int_ocn, sfco2_int_lnd
>
> BK
>
> On 16 Mar 2011, at 8:22 AM, Keith Lindsay wrote:
>
> > Hi,
> >
> > I'm experiencing a hang in ferret when I attempt to save a variable to a 
> > NetCDF file. The commands I am using are
> >
> > let/units="PgC/y"/title="CO2 Flux, Net"   sfco2_int     = 
> > (60*60*24*365)*(12/44)*1e-12*sfco2[x=@din,y=@din]
> > let/units="PgC/y"/title="CO2 Flux, Ocean" sfco2_int_ocn = 
> > (60*60*24*365)*(12/44)*1e-12*sfco2_ocn[x=@din,y=@din]
> > let/units="PgC/y"/title="CO2 Flux, Land"  sfco2_int_lnd = 
> > (60*60*24*365)*(12/44)*1e-12*sfco2_lnd[x=@din,y=@din]
> > list/clobber/file="testfile"/format="cdf" sfco2_int, sfco2_int_ocn, 
> > sfco2_int_lnd
> >
> > If I change format to "comma" or "tab", the file is created and looks fine. 
> > But with format="cdf", ferret appears to hang.
> >
> > ferret reports its version as
> >       FERRET v6.64
> >       Linux(gfortran) 2.6.9-89.0.20.ELsmp - 09/16/10
> >
> > This is on a linux system where "uname -a" reports
> > Linux mirage2 2.6.18-194.17.4.el5 #1 SMP Wed Oct 20 13:03:08 EDT 2010 
> > x86_64 x86_64 x86_64 GNU/Linux
> >
> > Any idea what's going on?
> >
> > Have others experienced this sort of behavior?
> >
> > Thanks, Keith
> >
> > ******************************************************************
> > Keith Lindsay                http://www.cgd.ucar.edu/oce/klindsay/
> > email: klindsay@xxxxxxxx   phone: 303-497-1722   fax: 303-497-1700
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> William S. Kessler
> NOAA / Pacific Marine Environmental Laboratory
> 7600 Sand Point Way NE
> Seattle WA 98115 USA
>
> william.s.kessler@xxxxxxxx
> Tel: 206-526-6221
> Fax: 206-526-6744
> Web: http://www.pmel.noaa.gov/people/kessler

******************************************************************
Keith Lindsay                http://www.cgd.ucar.edu/oce/klindsay/
email: klindsay@xxxxxxxx   phone: 303-497-1722   fax: 303-497-1700