We are pleased to announce the release of PETSc version 3.16 at https://petsc.org/release/download/

A list of the major changes and updates can be found at https://petsc.org/release/docs/changes/316

The final update to petsc-3.15 i.e petsc-3.15.5 is also available

We recommend upgrading to PETSc 3.16 soon. As always, please report problems to  petsc-maint@mcs.anl.gov and ask questions at petsc-users@mcs.anl.gov

This release includes contributions from

Albert Cowie
Alexei Colin
Barry Smith
Blaise Bourdin
Carsten Uphoff
Connor Ward
Daniel Finn
Daniel Shapero
Erik Schnetter
Fande Kong
Hong Zhang
Jacob Faibussowitsch
Jed Brown
Jeremy Tillay
Joe Wallwork
Joseph Pusztay
Jose Roman
Junchao Zhang
Koki Sagiyama
Kyle Gerard Felker
Lawrence Mitchell
Leila Ghaffari
Lisandro Dalcin
Mark Adams
Martin Diehl
Matthew Knepley
Matt McGurn
Moritz Huck
Mr. Hong Zhang
nathawani
olivecha
Pablo Brubeck
Patrick Sanan
pbrubeck
Pierre Jolivet
Richard Tran Mills
Rylee Sundermann
Sajid Ali
Sam Reynolds
Satish Balay
Scott Kruger
Stefano Zampini
Toby Isaac
Todd Munson
Vaclav Hapla
Yang Zongze
Zhao Gang

and bug reports/patches/proposed improvements received from

Adrian Croucher
Alexandre Halbach
Bret K. Stanford
Chonglin Zhang (@zhangchonglin)
cleaf
"Constantinescu, Emil M."
Damian Marek
Daniel Stone
Danyang Su
David Salac
dazza simplythebest
Drew Parsons (@RizzerAtGitLab)
edgar@openmail.cc
Emily Jakobs
Emmanuel Ayala
Eric Chamberland (@eric.chamberland)
Fande Kong
Getnet Betrie
Haplav
hg
Iman Datta
"Isaac, Tobin G"
Jacob Faibussowitsch
Jeremy Kozdon
Jin Chen
Junchao Zhang
Lars Corbijn
Lawrence Mitchell
Lisandro Dalcin
"Lundvick, Nick"
Mark Adams
Martin Diehl
Matthew Otten
Milan Pelletier
Mr. Hong Zhang
Nan Ding
Pierre Jolivet
Pieter Ghysels
Qi Tang
@qiuchangkai
Rezgar Shakeri
Rory Johnston
Sam Fagbemi
Saransh Saxena
Sergio Bengoechea
Stephen Jardin
TAY wee-beng
Victor Eijkhout
Xiaoye S. Li
Yang Liu

As always, thanks for your support,

Barry