Re: [netcdfgroup] bug in nc_open_par?

• To: Kent Yang <myang6@xxxxxxxxxxxx>
• Subject: Re: [netcdfgroup] bug in nc_open_par?
• From: Jim Edwards <jedwards@xxxxxxxx>
• Date: Wed, 12 Feb 2014 17:07:00 -0700

As I stated in my original post - this works with the F90 interface.
Surprising since the F90 interface calls the c code.


On Wed, Feb 12, 2014 at 1:20 PM, Kent Yang <myang6@xxxxxxxxxxxx> wrote:

>  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>
> 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",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
>
> CESM Software Engineering Group
> National Center for Atmospheric Research
> Boulder, CO
> 303-497-1842
>



-- 
Jim Edwards

CESM Software Engineering Group
National Center for Atmospheric Research
Boulder, CO
303-497-1842

• References:
  • [netcdfgroup] bug in nc_open_par?
    • From: Jim Edwards
  • Re: [netcdfgroup] bug in nc_open_par?
    • From: Dennis Heimbigner
  • Re: [netcdfgroup] bug in nc_open_par?
    • From: Jim Edwards
  • Re: [netcdfgroup] bug in nc_open_par?
    • From: Kent Yang