Not sure if this is relevant. Previously you may need to specify disable-shared
in the ./configure to build parallel netCDF-4.
Kent
From: netcdfgroup-bounces@xxxxxxxxxxxxxxxx
[mailto:netcdfgroup-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Jim Edwards
Sent: Wednesday, February 12, 2014 11:57 AM
To: dmh@xxxxxxxxxxxxxxxx
Cc: netcdfgroup@xxxxxxxxxxxxxxxx
Subject: Re: [netcdfgroup] bug in nc_open_par?
On Wed, Feb 12, 2014 at 10:39 AM, Dennis Heimbigner
<dmh@xxxxxxxxxxxxxxxx<mailto:dmh@xxxxxxxxxxxxxxxx>> wrote:
Two questions:
1. what ./configure flags are you using?
./configure --prefix=/glade/apps/opt/netcdf-mpi/4.3.0/intel/13.1.2 --enable-dap
--enable-netcdf4 --enable-shared --enable-mmap --enable-diskless
Looking at the config.log I see:
configure:16420: checking whether parallel I/O features are to be included
configure:16422: result: yes
#define USE_PARALLEL_POSIX 1
#define USE_PARALLEL_MPIO 1
#define USE_PARALLEL 1
2. what version of netcdf are you using?
Using netcdf 4.3.0 built with hdf5 1.8.11
=Dennis Heimbigner
Unidata
Jim Edwards wrote:
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<http://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<http://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
CESM Software Engineering Group
National Center for Atmospheric Research
Boulder, CO
303-497-1842
