IO

ROMS I/O

ROMS uses NetCDF for all its input and output data management. The NetCDF files can be processed using the standard library developed by UNIDATA, the Parallel-IO (PIO) library developed at NCAR, or the Software for Cashing Output and Reads for Parallel I/O (SCORPIO) library intended for the DOE's Energy Exascale Earth Model System (E3SM). The SCORPIO library was forked from the PIO library several years ago and evolved separately. The generic interface parallel I/O in ROMS works for both the PIO or SCORPIO libraries. However, we recommend using the PIO library because it is more efficient in processing I/O in our benchmark tests.