PnetCDF is a library providing high-performance parallel I/O while still maintaining file-format compatibility with Unidata's NetCDF, specifically the formats of CDF-1 and CDF-2. Although NetCDF supports parallel I/O starting from version 4, the files must be in HDF5 format. PnetCDF is currently the only choice for carrying out parallel I/O on files that are in classic formats (CDF-1 and 2). In addition, PnetCDF supports the CDF-5 file format, an extension of CDF-2, that supports more data types and allows users to define large dimensions, attributes, and variables (>2B elements).
Availability and Restrictions
Versions
The following versions of PnetCDF are available at OSC:
| Version | Pitzer | Cardinal |
|---|---|---|
| 1.12.1 | X* | |
| 1.12.3 | X |
You can use module spider pnetcdf to view available modules for a given machine. Feel free to contact OSC Help if you need other versions for your work. On Cardinal the module name is different, use module spider parallel-netcdf to view available modules on Cardinal
Access
PnetCDF is available to all OSC users. If you have any questions, please contact OSC Help.
Publisher/Vendor/Repository and License Type
Northwestern University and Argonne National Lab., Open source
