I'm not fixated on this namechange either way, what does everyone think? If we were to go with the name change, this would be a good time to do it.
> I don't want to entangle this with the regular transition, adopting your > changes needs a whole lot more thought, testing, and upstream adoption. The dev-coinstallable change is not mature enough yet, and 'entanglement' would be a bad idea. What i'm discussing here is just the idea of the namechange, libnetcdf11 -> libnetcdf-11, making this at the time of this transition. (Ideally dev-coinstallable, if agreed, would then just be a binNMU later). > I'm very uncomfortable with adopting such a drastic change without > buy-in from the upstream developers. Have you discussed this issue with > the NetCDF developers? Not yet. I'm posting it here for examination and consideration, and by upstream. The changes involved are: (1) path changes, matching hdf5 design. (2) symbol versioning, again matching hdf5. (HDF5_1.8.8 -> HDF_MPI_1.8.8, etc) There are no changes to existing (serial) netcdf (apart from potentially the package name change). The serial library is still libnetcdf.so, symbol names remain the same; only pnetcdf and mpi versions change. In the event of upstream successfully merging the variants in the future (ie. a single version, with hdf5 in parallel and with compression, and threads working ... ), then the changes can go away with just a recompile, while upgrades for a transition would just involve a temporary thunking library for pre-existing codes (ie a version of libnetcdf_mpi.so with symbols nc_copy@NETCDF_MPI_XXX etc. that links to libnetcdf.so nc_copy @ NETCDF_XXX ) This work then allows us to build codes against multiple versions of netcdf simultaneously, e.g. the ADIOS library, or Paraview/Visit, that currently must be linked against the serial version (in order to get compression, needed to read many datasets) but then can't read in parallel (needed for acceptable performance) on other sets. Best regards Alastair > Kind Regards, > > Bas > -- Alastair McKinstry, <alast...@sceal.ie>, <mckins...@debian.org>, https://diaspora.sceal.ie/u/amckinstry Misentropy: doubting that the Universe is becoming more disordered.
