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

35.10 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. 
  call check(nf90_create(FILE_NAME, IOR(nf90_netcdf4, nf90_mpiposix), ncid, &
       comm = MPI_COMM_WORLD, info = MPI_INFO_NULL, cache_size = CACHE_SIZE, &
       cache_nelems = CACHE_NELEMS, cache_preemption = CACHE_PREEMPTION))

2012 Unidata NetCDF Workshop > Parallel I/O with NetCDF