Re: [netcdfgroup] netcdf4/hdf problem

As a followup - using --enable-logging gives me no further information than
the original 'HDF error' message.    It seems to have something to do with
the number of variables or the total size of the file.  The file should have
625 variables, I find that if I write 501 variables it works fine, 502
generates the error.   In each case I am defining the header for the full
set of variables so the limit is hit on the actual write, not the define.

The file size with 501 variables is 39003468.   I don't have any problem
writing with netcdf3 or with pnetcdf.




On Thu, May 6, 2010 at 11:15 AM, Jim Edwards <jedwards@xxxxxxxx> wrote:

> I am using netcdf-4.1.1 and hdf5 1.8.4-patch1 on an AIX 5.3 system
>
> I am opening several netcdf3 format files to read and writing using the
> parallel
> netcdf4 nf90_open_par method.   I was crashing on trying to close one of
> the files opened to write with a meaningless 'HDF error' message string.  So
> I rebuilt netcdf with --enable-logging ( Can you consider implementing this
> feature using an environment variable instead of requiring a recompile?)
> and now I am crashing earlier in the program.   When I try to use ncdump to
> look at one of the files written I get ...
>
> HDF5-DIAG: Error detected in HDF5 (1.8.4-patch1) thread 0:
>   #000: H5F.c line 1514 in H5Fopen(): unable to open file
>     major: File accessability
>     minor: Unable to open file
>   #001: H5F.c line 1309 in H5F_open(): unable to read superblock
>     major: File accessability
>     minor: Read failed
>   #002: H5Fsuper.c line 322 in H5F_super_read(): unable to load superblock
>     major: Object cache
>     minor: Unable to protect metadata
>   #003: H5AC.c line 1831 in H5AC_protect(): H5C_protect() failed.
>     major: Object cache
>     minor: Unable to protect metadata
>   #004: H5C.c line 6160 in H5C_protect(): can't load entry
>     major: Object cache
>     minor: Unable to load metadata into cache
>   #005: H5C.c line 10990 in H5C_load_entry(): unable to load entry
>     major: Object cache
>     minor: Unable to load metadata into cache
>   #006: H5Fsuper_cache.c line 467 in H5F_sblock_load(): truncated file
>     major: File accessability
>     minor: File has been truncated
> /contrib/netcdf-4.1.1-mpi/bin/ncdump: camrun.cam2.h0.0000-01-01-00000.nc:
> HDF error
>
>