Changes for each release — PETSc 3.16.5 documentation

# Changes for each release

We will continually add new features and enhanced functionality in upcoming releases; small changes in usage and calling sequences of PETSc routines will continue to occur. We use the C/C++ deprecation feature (which prints deprecation warnings) to allow users to continue to use older interfaces until they update their codes. Although keeping one’s code accordingly up-to-date can be annoying, all PETSc users will be rewarded in the long run with a cleaner, better designed, and easier-to-use interface.

We suggest that users who want to upgrade their current PETSc application codes from a particular version to the most recent release proceed through the changes listed in this file in increasing order of version numbers. (Note: One can determine the release number of any current PETSc installation by looking in the file include/petscversion.h) Many of the interface changes can be handled quickly and easily by using global replacement via your favorite text editor. See the file Code Management for some tips that we find helpful in keeping our own code up to date and that should be generally useful for effective code management.

## Releases of PETSc

- 3.16 - Public Release, Sep 29, 2021
- 3.15 - Public Release, Mar 30, 2021
- 3.14 - Public Release, Sep 29, 2020
- 3.13 - Public Release, Mar 30, 2020
- 3.12 - Public Release, Sep 29, 2019
- 3.11 - Public Release, Mar 29, 2019
- 3.10 - Public Release, Sep 12, 2018
- 3.9 - Public Release, Apr 7, 2018
- 3.8 - Public Release, Sep 26, 2017
- 3.7 - Public Release, Apr 25, 2016
- 3.6 - Public Release, Jun 9, 2015
- 3.5 - Public Release, Jun 30, 2014
- 3.4 - Public Release, May 13, 2013
- 3.3 - Public Release, Jun 5, 2012
- 3.2 - Public Release, Sep 8, 2011
- 3.1 - Public release, Mar 25, 2010
- 3.0.0 - Public release, Dec 19, 2008
- 2.3.3 - Public release, May 23, 2007
- 2.3.2 - Public release, Sep 1, 2006
- 2.3.1 - Public release, Feb, 3, 2006
- 2.3.0 - Public release, Apr, 26, 2005
- 2.2.1 - Public release, Aug, 18 2004
- 2.2.0 - Public release, Feb 27, 2004
- 2.1.6 - Public release, Aug 5, 2003
- 2.1.5 - Public release, Jan 27, 2003
- 2.1.4 - private - Microsoft Cluster Software CD
- 2.1.3 - Public release, May 31, 2002
- 2.1.2 - public release, April 22 , 2002
- 2.1.1 - public release, December 19, 2001
- 2.1.0 - public release, April 11, 2001
- 2.0.29 - public release, September 26, 2000
- 2.0.28 - public release, March 27, 2000
- 2.0.25, 2.0.26, 2.0.27 - private releases
- 2.0.24 - public release, April 6, 1999
- 2.0.23 - private release, September 29,1998
- 2.0.22 - public release, April 29, 1998
- 2.0.21 - public release, November 13, 1997
- 2.0.18, 2.0.19, 2.0.20 - private releases
- 2.0.17 - public release, April 5, 1997
- 2.0.16 - private release, December 10, 1996 for "Bring Your Own Code" Workshop participants
- 2.0.15 - public release, October 4, 1996
- 2.0.13 - public release, April 18, 1996
- 2.0.Beta.10 - public release, December 15, 1995
- 2.0.Beta.8 - public release, October 13, 1995
- 2.0.Beta.6 - public release, July 30, 1995
- 2.0.Beta.4 - public release, June 21, 1995

We announce new PETSc releases on the petsc-announce mailing list.

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Changes: 3.16