netCDF  4.2.1.1
 All Data Structures Files Functions Variables Typedefs Macros Groups Pages
Parallel Access with NetCDF-4

Use the special parallel open (or create) calls to open (or create) a file, and then to use parallel I/O to read or write that file (see nc_open_par()).

Note that the chunk cache is turned off if a file is opened for parallel I/O in read/write mode. Open the file in read-only mode to engage the chunk cache.

NetCDF uses the HDF5 parallel programming model for parallel I/O with netCDF-4/HDF5 files. The HDF5 tutorial (http://hdfgroup.org/HDF5//HDF5/Tutor) is a good reference.

For classic and 64-bit offset files, netCDF uses the parallel-netcdf (formerly pnetcdf) library from Argonne National Labs/Nortwestern University. For parallel access of classic and 64-bit offset files, netCDF must be configured with the –with-pnetcdf option at build time. See the parallel-netcdf site for more information (http://www.mcs.anl.gov/parallel-netcdf).


Generated on Wed Aug 22 2012 14:39:31 for netCDF. NetCDF is a Unidata library.