Hi Quincey,
I still get the error after making the suggested changes. What versions of
hdf5 and netcdf are you using?
Jim
On Tue, Feb 18, 2014 at 7:41 AM, Quincey Koziol <quincey@xxxxxxxxx> wrote:
> Hi Jim,
> I've tested your program on the latest version of HDF5 and the
> latest version of netCDF-4 and it's working fine with "mpirun -np 4 ./bug".
> I did have to tweak your program slightly to get it to compile, so maybe
> that's the issue you are having:
>
> #include <stdio.h>
> #include "netcdf.h"
> #include "mpi.h"
> #include "netcdf_par.h"
>
> int main( int argc, char *argv[])
> {
> int mype, npe;
> int fh, ierr;
>
> MPI_Init(&argc,&argv);
> MPI_Comm_size(MPI_COMM_WORLD, &npe);
> MPI_Comm_rank(MPI_COMM_WORLD, &mype);
>
> ierr = nc_create_par("try.nc",NC_MPIIO, MPI_COMM_WORLD, MPI_INFO_NULL,
> &fh);
> printf("%d %d\n",__LINE__,ierr);
> ierr = nc_enddef(fh);
> printf("%d %d\n",__LINE__,ierr);
> ierr = nc_close(fh);
> printf("%d %d\n",__LINE__,ierr);
>
> ierr = nc_open_par("try.nc",NC_MPIIO, MPI_COMM_WORLD, MPI_INFO_NULL,
> &fh);
> printf("%d %d\n",__LINE__,ierr);
> ierr = nc_close(fh);
> printf("%d %d\n",__LINE__,ierr);
>
> MPI_Finalize();
> }
>
> Give that version a try a see if it works for you,
> Quincey
>
>
> > I have a very simple unit test that is failing when I try to use netcdf4
> > parallel. The test creates a file, calls enddef, closes the file, then
> > trys to reopen it. Using netcdf 4.3.0 built with hdf5 1.8.11 I am
> getting
> > an assert error when I run this test,
> > 3:testnetcdf4: nc4file.c:2858: NC4_open: Assertion `0' failed.
> > 0:testnetcdf4: nc4file.c:2858: NC4_open: Assertion `0' failed.
> > 1:testnetcdf4: nc4file.c:2858: NC4_open: Assertion `0' failed.
> > 2:testnetcdf4: nc4file.c:2858: NC4_open: Assertion `0' failed.
> >
> > The same test written in F90 instead of C passes.
> >
> > #include <netcdf.h>
> > #include <mpi.h>
> > #include <netcdf_par.h>
> >
> > int main( int *argc, char ***argv)
> > {
> > int mype, npe;
> > int fh, ierr;
> > MPI_Init(argc,argv);
> > MPI_Comm_size(MPI_COMM_WORLD, &npe);
> > MPI_Comm_rank(MPI_COMM_WORLD, &mype);
> >
> > ierr = nc_create_par("try.nc",NC_MPIIO, MPI_COMM_WORLD, MPI_INFO_NULL,
> > &fh);
> > printf("%d %d\n",__LINE__,ierr);
> > ierr = nc_enddef(fh);
> > printf("%d %d\n",__LINE__,ierr);
> > ierr = nc_close(fh);
> > printf("%d %d\n",__LINE__,ierr);
> >
> > ierr = nc_open_par("try.nc",NC_MPIIO, MPI_COMM_WORLD, MPI_INFO_NULL,
> &fh);
> > printf("%d %d\n",__LINE__,ierr);
> > ierr = nc_close(fh);
> > printf("%d %d\n",__LINE__,ierr);
> >
> > MPI_Finalize();
> > }
> >
>
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--
Jim Edwards
