There are two ways to write parallel netcdf files: Use netcdf-4 (hdf5 based) files Use pnetcdf and old-style netcdf files.
Perhaps the best would be to compile netcdf with pnetcdf support only if petsc is configured with exodusii? I can send a patch this afternoon. Greg Sjaardema, the exodus maintainer, has been very responsive, I will try to iron out the last exodus / netcdf-4 bugs, but it sure would be noce to be able to read / write old style files too… Blaise > On Dec 19, 2017, at 5:32 PM, Smith, Barry F. <[email protected]> wrote: > > > >> On Dec 19, 2017, at 5:30 PM, Jed Brown <[email protected]> wrote: >> >> Does ExodusII write pnetcdf? It's a different interface from (parallel) >> NetCDF4. > > Shudder! > >> >> Matthew Knepley <[email protected]> writes: >> >>> Blaise really wants to write in parallel. It would be better to use HDF5, >>> but evidently >>> it is broken in ExodusII. Thats what we get for using something from >>> Sandia. They >>> finally have their revenge. >>> >>> Matt >>> >>> On Tue, Dec 19, 2017 at 5:53 PM, Smith, Barry F. <[email protected]> wrote: >>> >>>> >>>> Do you really need to use pnetcdf? No one uses it and what usefulness >>>> does it really provide, best to be avoided. >>>> >>>> Barry >>>> >>>> >>>>> On Dec 19, 2017, at 1:12 PM, Satish Balay <[email protected]> wrote: >>>>> >>>>> parallel-netcdf-1.9.0.pre1/INSTALL has: >>>>> >>>>>>>>>>>> >>>>> >>>>> 4. Reporting Installation or Usage Problems >>>>> =========================================== >>>>> >>>>> Please send an email to [email protected] >>>>> >>>>> <<<<<< >>>>> >>>>> We'll have to send in these bug reports. >>>>> >>>>> Satish >>>>> >>>>> >>>>> On Tue, 19 Dec 2017, Matthew Knepley wrote: >>>>> >>>>>> The configure is broken, perhaps beyond fixing. I need to give >>>> --with-mpi >>>>>> to get anything >>>>>> to work because the way it checks for MPI is screwed up. I will see if I >>>>>> can throw away all its idiotic configure stuff in favor of just telling >>>> it >>>>>> everything, but I am not eager to depend on something so rickety. >>>>>> >>>>>> Matt >>>>>> >>>>>> >>>>> >>>> >>>> >>> >>> >>> -- >>> What most experimenters take for granted before they begin their >>> experiments is infinitely more interesting than any results to which their >>> experiments lead. >>> -- Norbert Wiener >>> >>> https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/> > -- Department of Mathematics and Center for Computation & Technology Louisiana State University, Baton Rouge, LA 70803, USA Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 http://www.math.lsu.edu/~bourdin
