Which flavor of MPI are you using? There is a problem with OpenMPI
that, as far as I know, has not been fixed in the netcdf4 release.
The error sounds similar. If that is the problem, there was a fix
sent to the list sometime last fall, I think. (It worked for me, at
least.)
-- Ted
On Jan 18, 2010, at 3:51 PM, Jim Edwards wrote:
I am recently porting my code to netcdf4 and think that there may be
a bug in the underlying hdf5 library...
I'm not sure where to take it, thought I would try this list first.
The issue is that when a file is opened for read using nf90_open_par
I get an error on closing the file, I managed to get a traceback by
using the mpi wrappers facility
1:call chain trace-back:
1: MPI_Comm_free
1: H5FD_mpi_comm_info_free
1: H5FD_mpio_close
1: H5FD_close
1: H5F_dest
1: H5F_try_close
1: H5F_close
1: H5I_dec_ref
1: H5Fclose
1: close_netcdf4_file
1: nc_close
1: nf_close
1: __netcdf_NMOD_nf90_close
1:ERROR: 0032-131 Can't free a predefined communicator (0) in
MPI_Comm_free,
This is using netcdf 4.0.1 and hdf5 1.8.3
I don't seem to be getting this error on a file opened to write,
only those opened to read.
