Hello, Thanks for your question, my apologies for the delay in responding! The C++ interface is still being developed, and a new release is coming out soon. The version numbers you report (4.1.3, 18.104.22.168) seem to refer to the core netCDF-C library, not the C++ interface. What sort of performance issues are you seeing? NetCDF 4.x uses the hdf5 library for underlying file storage; can you tell me what version of HDF5 is being used? If you want to try the latest versions, you can install them manually. The tar archives for the source code can be found at the following locations: * netCDF-C: https://github.com/Unidata/netcdf-c/releases * netCDF-C++: https://github.com/Unidata/netcdf-cxx4/releases Try the latest versions, and let us know if the performance issues persist. it is entirely possible that you are seeing a known bug from an older release of netCDF, and a newer version will provide better performance. Thanks! -Ward > Hi, > > > > We are trying to understand your NetCDF release system. According to > https://www.unidata.ucar.edu/downloads/netcdf/index.jsp, the latest versions > of NetCDF are: > > > > > Java > > 5.0.0 > > 2019-07-29 > > > C > > 4.7.0 > > 2019-04-29 > > > Fortran > > 4.4.5 > > > > > C++ > > 4.3.0 > > 2013-04-29 > > > > The dates come from the Release Notes page: > https://www.unidata.ucar.edu/software/netcdf/docs/RELEASE_NOTES.html > > > > This seems to suggest that the C++ version is no longer being maintained. Is > this correct? > > > > We happen to be using the C++ version of course and are having trouble with > running on CentOS 7. The CentOS 6 version runs fine. Looking at our > versions: > > > > > CentOS 6 > > 4.1.3 > > works fine > > > Cent OS 7 > > 22.214.171.124 > > performs poorly > > > > It seems like there was a big performance bug introduced in 126.96.36.199. > > > > And yet, I somehow wonder if we are not interpreting the version numbers > correctly. Can you point us in the correct direction? > > > > > Ticket Details =================== Ticket ID: RQC-556809 Department: Support netCDF Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.