[petsc-announce] PETSc 3.21 release

[Barry Smith]

We are pleased to announce the release of PETSc version 3.21.0 at https://urldefense.us/v3/__https://petsc.org/release/download/__;!!G_uCfscf7eWS!YVMgswXnpKhsTJGubWLQRXWUyEYJLMsviJGZ28I9FNEatQbgLV4hjrDkwd5mdV9gcylR-8eLG5kzaUyLcXKPth8l$  

A list of the major changes and updates can be found at https://urldefense.us/v3/__https://petsc.org/release/changes/321/__;!!G_uCfscf7eWS!YVMgswXnpKhsTJGubWLQRXWUyEYJLMsviJGZ28I9FNEatQbgLV4hjrDkwd5mdV9gcylR-8eLG5kzaUyLcebH6G_K$ 

The final update to petsc-3.20 i.e., petsc-3.20.6 is also available.

We recommend upgrading to PETSc 3.21.0 soon. As always, please report problems to petsc-maint at mcs.anl.gov <mailto:petsc-maint at mcs.anl.gov>  and ask questions at petsc-users at mcs.anl.gov <mailto:petsc-users at mcs.anl.gov>

A reminder that releases are at the end of March and September each year.

This release includes contributions from

Albert Cowie
Alex Lindsay
Barry Smith
Blanca Mellado Pinto
David Andrs
David Kamensky
David Wells
Fabien Evard
Fande Kong
Hansol Suh
Hong Zhang
Ilya Fursov
James Wright
Jed Brown
Jeongu Kim
Jeremy L Thompson
Jeremy Theler
Jose Roman
Junchao Zhang
Koki Sagiyama
Lars Bilke
Lisandro Dalcin
Mark Adams
Martin Diehl
Massimiliano Leoni
Matthew Knepley
Matt McGurn
Mr. Hong Zhang
Nils Friess
Pablo Brubeck
Pierre Jolivet
René Chenard
Rezgar Shakeri
Richard Tran Mills
Satish Balay
Sebastian Grimberg
Stefano Zampini
Stephan Köhler
Toby Isaac
YANG Zongze
Zach Atkins

and bug reports/proposed improvements received from

Alain O' Miniussi
Benjamin Sturdevant
Damian Marek
David Bold
Fabian Wermelinger
Fabien Evrard
Gerard Henry
Gourav Kumbhojkar
Glenn Hammond
Hana Honnerová
Hao Luo
Henrik Büsing
Ilya Fursov
Jeremy Theler
Jesse Madsen
Jose Roman
Kevin G. Wang
Mark Adams
Mehmet Sahin
Miguel Angel Salazar de Troya
Niclas Götting
Pierre Jolivet
Simone Scacchi
Victor Eijkhout
Timothy J. Williams
Yi Hu

As always, thanks for your support,

Barry
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