Hi,
great! Thank you all for this information! Indeed MATPYTHON cover our
needs!
:)
Eric
On 2024-12-03 01:36, Stefano Zampini wrote:
Eric
the python equivalent of a MATSHELL is MATPYTHON, where you are in
control of the implementation of the matrix vector product and other
operations, see
https://urldefense.us/v3/__https://petsc.org/release/petsc4py/petsc_python_types.html*petsc-python-matrix-type__;Iw!!G_uCfscf7eWS!ZD3aymPzmAu2afLqaAuAYv18OwPDU-6XWUzuj2lTZ7oyjCjYPx39HcSblHApdBD0BtxMNmBq8_BssfuDCbR1d2QRvp0ds5fft1-XkhiS$
This should cover your needs, let me know if you need methods that are
not wrapped
Il giorno mar 3 dic 2024 alle ore 09:15 Pierre Jolivet
<pie...@joliv.et> ha scritto:
On 2 Dec 2024, at 11:15 PM, Eric Chamberland via petsc-users
<petsc-users@mcs.anl.gov> wrote:
Hello,
We were exploring the use of the |MatCreateComposite| function
with |petsc4py|, but we noticed that it doesn't seem to be
available in the Python interface
(https://urldefense.us/v3/__https://petsc.org/release/petsc4py/reference/petsc4py.PETSc.Mat.html__;!!G_uCfscf7eWS!ZD3aymPzmAu2afLqaAuAYv18OwPDU-6XWUzuj2lTZ7oyjCjYPx39HcSblHApdBD0BtxMNmBq8_BssfuDCbR1d2QRvp0ds5fftzVa96TG$
<https://urldefense.us/v3/__https://petsc.org/release/petsc4py/reference/petsc4py.PETSc.Mat.html__;!!G_uCfscf7eWS!fphemsDPNmxHUr-ybYLt_xWUrP575eKuI4xixwypEzd2g7uc6qMilt8etg13o24gU0vloOVrsHDXwqlgoY1T7jrcQUiv83PrXvNSYlNU$>).
We were wondering if this is due to a technical limitation or if
there is a better alternative to achieve the same result.
Our goal is to create a matrix representing PTAP without
explicitly computing the product.
We also considered using |MatShell|, but it seems that this
approach is not supported in |petsc4py| either.
What do you mean?
You can use either a MatShell or a MatPython in petsc4py out of
the box.
Thanks,
Pierre
On the other hand, we noticed that |MatCreateTranspose| is
implemented, and it aligns somewhat with the kind of operation
we're aiming for.
Any insights or advice you could provide would be greatly
appreciated!
Thank you,
Eric
--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42
--
Stefano
--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42
