[netcdfgroup] Release 2.3.0 of ParallelI IO (PIO) C/Fortran library for IO performance in HPC

• To: netcdfgroup@xxxxxxxxxxxxxxxx
• Subject: [netcdfgroup] Release 2.3.0 of ParallelI IO (PIO) C/Fortran library for IO performance in HPC
• From: Ed Hartnett <edwardjameshartnett@xxxxxxxxx>
• Date: Fri, 22 Sep 2017 11:49:50 -0600

The PIO team is pleased to release version 2.3.0 of the PIO library. This
release includes a autotools-based build system (C library only), full
support for multiple computation components with async, bug fixes, and more
tests.
What is PIO?

The Parallel IO library (PIO) is a high-level parallel I/O C/Fortran
library for structured grid applications. PIO provides a netCDF-like API,
and allows users to designate some subset of processors to perform IO.
Computational code calls netCDF-like functions to read and write data, and
PIO uses the IO processors to perform all necessary IO.

PIO also supports the creation of multiple computation components, each
containing many processors, and one shared set of IO processors. The
computational components can perform write operation asynchronously, and
the IO processors will take care of all storage interaction.

See the PIO web site for more information: http://ncar.github.io/ParallelIO/
New This ReleaseAutotools Build System

In addition to the existing CMake build system, we now have an
autocont/automake/libtool based build system, for the C library only.

Fortran users must continue to use the CMake build system to build PIO.

The autotools build system will be maintained in parallel with the CMake
build system.
Multiple Computation Components with Async

Async mode now supports more than one computational component.
Bug fixes

Fixes to fill value bugs with write_darray()/write_darray_multi().
Required Libraries

This release requires:

   - netcdf-4.4.1 or newer.
   - pnetcdf-1.8.1 or newer (unless PIO is built without pnetcdf support).


For downloads: https://github.com/NCAR/ParallelIO/releases/tag/pio2_3_0