Section: 21.10 Using NetCDF Parallel I/O in Fortran 90

Previous: Example of Simple Parallel I/O Access (part 2)

Next: Jumpshot Graph of Independent Parallel Data Writes

21.10 Using NetCDF Parallel I/O in Fortran 90

Using netCDF-4 parallel I/O in Fortran 90 is easy.

Simply provide the optional parameters comm and info for nf90_create or nf90_open.
This is tested in nf_test/f90tst_parallel.f90 and nf_test/f90tst_parallel2.f90.

  ! Create the netCDF file. 
  mode_flag = IOR(nf90_netcdf4, nf90_classic_model) 
  call handle_err(nf90_create(FILE_NAME, mode_flag, ncid, comm = MPI_COMM_WORLD, &
       info = MPI_INFO_NULL))

2009 Unidata NetCDF Workshop for Developers and Data Providers > Parallel I/O with NetCDF