Re: [ferret_users] ferret 6.67 OPeNDAP error -68

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Patrick,
The error message is coming from an attempt to open the dataset using 
the netCDF library. Do you have ncdump installed on both systems?  For a 
good comparison, it should be the ncdump from Unidata NetCDF4.1.1, which 
is the NetCDF library that Ferret uses to open NetCDF datasets and 
OPeNDAP url's.

Then, is "ncdump -h" able to operate on the url?

Ansley

On 3/15/2011 9:03 AM, Brockmann Patrick wrote:
> Hi all,
>
> I have encountered a problem with 2 identical plateforms X86_64
> but with different distributions (RedHat and Mandriva)
> when I try to open a file from a OPeNDAP server.
>
> Here is the test
>
> #########################################
> # First machine
> #########################################
>
> $ more /etc/redhat-release
> Mandriva Linux release 2010.2 (Official) for x86_64
>
> $ ldd /opt/ferret/bin/ferret_v667
>        linux-vdso.so.1 =>  (0x00007fff8bf4a000)
>        libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f2c8f0cf000)
>        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f2c8eeb2000)
>        libdl.so.2 => /lib64/libdl.so.2 (0x00007f2c8ecae000)
>        libX11.so.6 => /usr/lib64/libX11.so.6 (0x00007f2c8e974000)
>        libc.so.6 => /lib64/libc.so.6 (0x00007f2c8e608000)
>        /lib64/ld-linux-x86-64.so.2 (0x00007f2c8f2d1000)
>        libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x00007f2c8e3eb000)
>        libXau.so.6 => /usr/lib64/libXau.so.6 (0x00007f2c8e1e8000)
>        libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x00007f2c8dfe2000)
>
> $ ferret_v667
> yes? use 
> "http://dods.ipsl.jussieu.fr/cgi-bin/nph-dods/mc2ipsl/CMIP5/output/IPSL/IPSL-CM5A-LR/historical/mon/land/lai/r1i1p1/lai_Lmon_IPSL-CM5A-LR_historical_r1i1p1_185001-200512.nc";
> **Internet Data error
>             NetCDF: I/O failure (OPeNDAP/netCDF Error code -68)
>
>
> whereas on the second machine:
> #########################################
> # Second machine
> #########################################
>
> $ more /etc/redhat-release
> Red Hat Enterprise Linux Server release 5.6 (Tikanga
> $ ldd /usr/local/install/ferret-6.67/bin/ferret_v667
>        linux-vdso.so.1 =>  (0x00007fffd3959000)
>        libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00000038d9200000)
>        libselinux.so.1 => /lib64/libselinux.so.1 (0x00000038d4800000)
>        libdl.so.2 => /lib64/libdl.so.2 (0x00000038cf000000)
>        libX11.so.6 => /usr/lib64/libX11.so.6 (0x00000038d0000000)
>        libc.so.6 => /lib64/libc.so.6 (0x00000038ce800000)
>        libsepol.so.1 => /lib64/libsepol.so.1 (0x00000038d3c00000)
>        /lib64/ld-linux-x86-64.so.2 (0x00000038ce400000)
>        libXau.so.6 => /usr/lib64/libXau.so.6 (0x00000038d0400000)
>        libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x00000038cfc00000)
> $ ferret_v667
> yes?  use 
> "http://dods.ipsl.jussieu.fr/cgi-bin/nph-dods/mc2ipsl/CMIP5/output/IPSL/IPSL-CM5A-LR/historical/mon/land/lai/r1i1p1/lai_Lmon_IPSL-CM5A-LR_historical_r1i1p1_185001-200512.nc";
> yes? show data
>     currently SET data sets:
>    1> 
> http://dods.ipsl.jussieu.fr/cgi-bin/nph-dods/mc2ipsl/CMIP5/output/IPSL/IPSL-CM5A-LR/historical/mon/land/lai/r1i1p1/lai_Lmon_IPSL-CM5A-LR_historical_r1i1p1_185001-200512.nc  
> (default)
> name     title                             I         J         
> K         L
> LAI      Leaf Area Index                  1:96      1:96      
> ...       1:1872
>
>
> So I am puzzled on this one.
> The error code is not even in the documentation.
> http://www.unidata.ucar.edu/software/netcdf/docs/netcdf-c/NetCDF_002d3-Error-Codes.html 
>
> or
> http://www.unidata.ucar.edu/software/netcdf/docs/netcdf-c/NetCDF_002d4-Error-Codes.html 
>
>
> Any help welcome.
> Patrick