PETSc: Old License

# PETSc

# Old License

# PETSc 3.5 and later

PETSc is now distributed under a 2-clause BSD license. This page containing the (roughly compatible) legacy PETSc license exists for historical purposes.

## Licensing Notification

Permission to use, reproduce, prepare derivative works, and to redistribute to others this software, derivatives of this software, and future versions of this software as well as its documentation is hereby granted, provided that this notice is retained thereon and on all copies or modifications. This permission is perpetual, world-wide, and provided on a royalty-free basis. UChicago Argonne, LLC and all other contributors make no representations as to the suitability and operability of this software for any purpose. It is provided "as is" without express or implied warranty.

Principal Software authors

- Mathematics and Computer Science Division
- Argonne National Laboratory,
- Argonne IL 60439
- Any questions or comments on the software may be directed to petsc-maint@mcs.anl.gov.

Portions of this software are copyright by UChicago Argonne, LLC. Argonne National Laboratory with facilities in the state of Illinois, is owned by The United States Government, and operated by UChicago Argonne, LLC under provision of a contract with the Department of Energy.

This license DOES NOT apply to any software that may be obtained via the --download-package option of the PETSc configuration. Each of those packages are covered by their own copyrights and licenses.

## DISCLAIMER

PORTIONS OF THIS SOFTWARE WERE PREPARED AS AN ACCOUNT OF WORK SPONSORED BY AN AGENCY OF THE UNITED STATES GOVERNMENT. NEITHER THE UNITED STATES GOVERNMENT NOR ANY AGENCY THEREOF, NOR THE UNIVERSITY OF CHICAGO, NOR ANY OF THEIR EMPLOYEES OR OFFICERS, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LEGAL LIABILITY OR RESPONSIBILITY FOR THE ACCURACY, COMPLETENESS, OR USEFULNESS OF ANY INFORMATION, APPARATUS, PRODUCT, OR PROCESS DISCLOSED, OR REPRESENTS THAT ITS USE WOULD NOT INFRINGE PRIVATELY OWNED RIGHTS. REFERENCE HEREIN TO ANY SPECIFIC COMMERCIAL PRODUCT, PROCESS, OR SERVICE BY TRADE NAME, TRADEMARK, MANUFACTURER, OR OTHERWISE, DOES NOT NECESSARILY CONSTITUTE OR IMPLY ITS ENDORSEMENT, RECOMMENDATION, OR FAVORING BY THE UNITED STATES GOVERNMENT OR ANY AGENCY THEREOF. THE VIEW AND OPINIONS OF AUTHORS EXPRESSED HEREIN DO NOT NECESSARILY STATE OR REFLECT THOSE OF THE UNITED STATES GOVERNMENT OR ANY AGENCY THEREOF.