Module petsc4py not found on Anaconda

dolfinx
, ,
1

Hello,

I’m posting here because I’m having an issue with the petsc4py module. I’m trying to solve the heat equation, and to create the variational form, I need to use dolfinx.fem.petsc.LinearProblem. However, the petsc module is not found and does not exist on Anaconda (Windows).

How can I install it? Or is there another way to solve this problem using different modules?

Thank you for your response.

from dolfinx.fem.petsc import LinearProblem
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[11], line 1
----> 1 from dolfinx.fem.petsc import LinearProblem

File ~\anaconda3\envs\fenicsx-env\Lib\site-packages\dolfinx\fem\petsc.py:20
     17 import functools
     18 import typing
---> 20 from petsc4py import PETSc
     22 # ruff: noqa: E402
     23 import dolfinx

ModuleNotFoundError: No module named 'petsc4py'
2

PETSc is not supported on windows (unfortunately), as stated in

Windows only: Windows conda packages are currently in beta testing. PETSc and petsc4py are not available on Windows; as an alternative we recommend using pyamg following python/demo/demo_pyamg.py. Because FEniCS uses just-in-time compilation it necessary to install Microsoft Visual Studio.

There are several demos at: FEniCS workshop — FEniCS Workshop
that doesn’t rely on PETSc, and you also have: Solve the Poisson and linearised elasticity equations using pyamg — DOLFINx 0.9.0 documentation