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[netCDF #GXY-620794]: nf_open_par() Unknown file format

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> Dear NetCDF Support:
> 
> I have an input file that I can read with my ncdump, open
> with nf_open(), but which gives an error with nf_open_par():
> 
> Testing nf_open()...
> 
> nf_open():
> No error
> 
> nf_close():
> No error
> 
> Testing nf_open_par()...
> 
> nf_open_par():
> NetCDF: Unknown file format
> 
> What does this mean - what is it about the file that that
> allows it to be opened by nf_open() but not nf_open_par()?
> I get the same error with different versions of NetCDF,
> and with different versions of HDF5 (if that matters).
> 
> Below is my test script.
> 
> Best regards,
> 
> Max
> ---
> Max R. Dechantsreiter
> President
> Performance Jones L.L.C.
> address@hidden
> 
> 
> #!/bin/sh
> 
> cat > test_nf_open_par.F90 << EOF
> program test_nf_open_par
> !USE mpi, ONLY: MPI_INFO_NULL
> USE mpi
> INCLUDE 'netcdf.inc'
> 
> character (len=*), parameter :: grid="iconR2B04-grid.nc"
> integer :: ierr, ncid, status
> 
> call MPI_Init(ierr)
> 
> print '()'
> 
> print '(a,/)', "Testing nf_open()..."
> status = nf_open(grid, nf_nowrite, ncid)
> print *, "nf_open(): ", nf_strerror(status)
> if (status == nf_noerr) then
> status = nf_close(ncid)
> print *, "nf_close(): ", nf_strerror(status)
> end if
> 
> print '(a,/)', "Testing nf_open_par()..."
> status = nf_open_par(grid, IOR(nf_nowrite, nf_mpiio), &
> &                        MPI_COMM_WORLD, MPI_INFO_NULL, ncid)
> print *, "nf_open_par(): ", nf_strerror(status)
> if (status == nf_noerr) then
> status = nf_close(ncid)
> print *, "nf_close(): ", nf_strerror(status)
> end if
> 
> call MPI_Finalize(ierr)
> 
> end program test_nf_open_par
> EOF
> 
> module purge
> module load intel/2017.5.239
> module load impi/2017.4.239
> module list
> 
> ZLIB_VERSION=1.2.11
> SZIP_VERSION=2.1.1
> HDF5_VERSION=1.10.2
> HDF5_VERSION=1.8.18
> NETCDF_C_VERSION=4.6.1
> NETCDF_FORTRAN_VERSION=4.4.4
> 
> LIB=/global/scratch/users/maxd/ICON/lib-avx512
> 
> ZLIB=$LIB/zlib-$ZLIB_VERSION
> SZLIB=$LIB/szip-$SZIP_VERSION
> HDF5=$LIB/phdf5-$HDF5_VERSION
> NETCDF4=$LIB/netCDF4-$NETCDF_C_VERSION
> 
> export 
> CPATH=$NETCDF4/include:$HDF5/include:$ZLIB/include:$SZLIB/include:$CPATH
> LD_LIBRARY_PATH=$HDF5/lib:$ZLIB/lib:$SZLIB/lib:$LD_LIBRARY_PATH
> LD_LIBRARY_PATH=$NETCDF4/lib:$LD_LIBRARY_PATH
> LIBRARY_PATH=$LD_LIBRARY_PATH
> export LD_LIBRARY_PATH # shared libraries
> export LIBRARY_PATH    # static libraries
> 
> mpiifort test_nf_open_par.F90 -lnetcdff -lnetcdf -lhdf5 -lsz -lz
> 
> mpiexec -n 1 ./a.out
> 
> 

=Dennis Heimbigner
  Unidata


Ticket Details
===================
Ticket ID: GXY-620794
Department: Support netCDF
Priority: Normal
Status: Open
===================
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