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> As Jim says, if you've created a "classic format" netcdf file, you have two > options: > - read it serially > - convert it to "new format" (really HDF5) I've used VTK's infamous vtkExodusIIWriter [1], so frankly I wasn't really sure what format it spits out. Are there conversion scripts out in the wild? Cheers, Nico [1] http://www.vtk.org/doc/nightly/html/classvtkExodusIIWriter.html On Wed, Feb 4, 2015 at 11:43 PM, Rob Latham <robl@xxxxxxxxxxx> wrote: > > > On 02/04/2015 03:28 PM, Nico Schlömer wrote: >>> >>> No, that's all legal, if unusual -- I am glad to see you are exercising >>> the >>> "Argonne/Northwestern parallel netcdf" driver feature of NetCDF-4. >> >> >> Oh wait, you mean pnetcdf (as opposed to Parallel I/O?). The >> configuration [1] on the machine which claims the file is not netCDF >> is >> ``` >> Configuration Summary: >> >> -- Building Shared Libraries: ON >> -- Building netCDF-4: ON >> -- Building DAP Support: ON >> -- Building Utilities: ON >> >> Building Parallel NetCDF >> -- Using pnetcdf: OFF >> -- Using Parallel IO: ON >> ``` >> I actually do *not* want pnetcdf for reading, I would like to use the >> Parallel IO feature built into netCDF itself. What option would I have >> to set for this? > > > As Jim says, if you've created a "classic format" netcdf file, you have two > options: > - read it serially > - convert it to "new format" (really HDF5) > > > ==rob > >> >> Cheers, >> Nico >> >> >> [1] >> https://launchpadlibrarian.net/196524671/buildlog_ubuntu-utopic-amd64.netcdf_1%3A4.3.3~20150204-utopic1_UPLOADING.txt.gz >> >> >> On Wed, Feb 4, 2015 at 11:09 PM, Rob Latham <robl@xxxxxxxxxxx> wrote: >>> >>> >>> >>> On 02/04/2015 02:45 PM, Nico Schlömer wrote: >>>>> >>>>> >>>>> What's the value of the mode argument you are passing to >>>>> >>>>> nc_open_par(const char *path, int mode, MPI_Comm comm, MPI_Info >>>>> info, >>>>> int *ncidp); >>>> >>>> >>>> >>>> The call is from [1] with >>>> ``` >>>> NC_NOWRITE == 0 >>>> NC_SHARE == 2048 >>>> pariomode == 32768 >>> >>> >>> >>> 32768 is 0x8000 or NC_PNETCDF >>>> >>>> >>>> ``` >>>> so eventually the mode argument is >>>> ``` >>>> NC_NOWRITE|NC_SHARE|pariomode == 34816 >>>> ``` >>>> Looks suspicious? >>> >>> >>> >>> No, that's all legal, if unusual -- I am glad to see you are exercising >>> the >>> "Argonne/Northwestern parallel netcdf" driver feature of NetCDF-4. >>> >>> These flags will create a classic netcdf file. >>> >>> Why would such a file be unreadable on another system? >>> >>> Well, if the other system is also requesting NC_PNETCDF, it's possible >>> the >>> Unidata-NetCDF library was not built with pnetcdf support, though >>> nc_open_par should just detect the format. >>> >>> ==rob >>> >>> >>>> >>>> Cheers, >>>> Nico >>>> >>>> >>>> [1] >>>> >>>> https://github.com/trilinos/trilinos/blob/master/packages/seacas/libraries/exodus/cbind/src/ex_open_par.c#L180 >>>> >>>> On Wed, Feb 4, 2015 at 6:00 PM, Russ Rew <russ@xxxxxxxxxxxxxxxx> wrote: >>>>> >>>>> >>>>> Hi Nico, >>>>> >>>>> What's the value of the mode argument you are passing to >>>>> >>>>> nc_open_par(const char *path, int mode, MPI_Comm comm, MPI_Info >>>>> info, >>>>> int *ncidp); >>>>> >>>>> ? >>>>> >>>>> --Russ >>>>> >>>>> On Tue, Feb 3, 2015 at 3:25 PM, Nico Schlömer >>>>> <nico.schloemer@xxxxxxxxx> >>>>> wrote: >>>>>> >>>>>> >>>>>> >>>>>> Hi all, >>>>>> >>>>>> I'm trying to read the file >>>>>> ``` >>>>>> http://win.ua.ac.be/~nschloe/other/pacman.e >>>>>> ``` >>>>>> in parallel with `nc_open_par` [1]. This works on one machine, but >>>>>> returns the error code `-51` ("Not a netCDF file") on another. >>>>>> Could someone clarify this? >>>>>> >>>>>> Cheers, >>>>>> Nico >>>>>> >>>>>> >>>>>> [1] >>>>>> >>>>>> >>>>>> https://github.com/Unidata/netcdf-c/blob/master/libdispatch/dparallel.c#L38 >>>>>> >>>>>> _______________________________________________ >>>>>> netcdfgroup mailing list >>>>>> netcdfgroup@xxxxxxxxxxxxxxxx >>>>>> For list information or to unsubscribe, visit: >>>>>> http://www.unidata.ucar.edu/mailing_lists/ >>>>>> >>>>> >>>> >>>> _______________________________________________ >>>> netcdfgroup mailing list >>>> netcdfgroup@xxxxxxxxxxxxxxxx >>>> For list information or to unsubscribe, visit: >>>> http://www.unidata.ucar.edu/mailing_lists/ >>>> >>> >>> -- >>> Rob Latham >>> Mathematics and Computer Science Division >>> Argonne National Lab, IL USA >>> >>> >>> _______________________________________________ >>> netcdfgroup mailing list >>> netcdfgroup@xxxxxxxxxxxxxxxx >>> For list information or to unsubscribe, visit: >>> http://www.unidata.ucar.edu/mailing_lists/ > > > -- > Rob Latham > Mathematics and Computer Science Division > Argonne National Lab, IL USA
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