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For sparse matrices
- [x] Jacobi: https://en.wikipedia.org/wiki/Preconditioner#Jacobi_(or_diagonal)_preconditioner
- [ ] Gauss-Seidel:
Also a generic interface: preconditioner `P` should be an ar…
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### Hi, when I run this code below:
import sys
import cellrank as cr
import scanpy as sc
import pandas as pd
sc.settings.set_figure_params(frameon=False, dpi=100)
import numpy as np
cr.settin…
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## Bug Report
@trilinos/ifpack2
### Description
The SupportGraph preconditioner in Ifpack2 appears to be untested and is unlikely to compile. It uses functions (e.g., CrsMatrix->getGlobalNumD…
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```
What steps will reproduce the problem?
1. Build petsc-dev with cuda support using cusp/thrust
2. Build and run src/ksp/ksp/examples/tutorials/ex2.
3. See the attached log file.
What is the expect…
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```
What steps will reproduce the problem?
1. Build petsc-dev with cuda support using cusp/thrust
2. Build and run src/ksp/ksp/examples/tutorials/ex2.
3. See the attached log file.
What is the expect…
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Hi @lmoresi
Here is the simple example that demonstrate petsc labelling issue in parallel.
```python3
import underworld3 as uw
from underworld3.systems import Stokes
import sympy
mesh = u…
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Currently the Python bindings defaults to preconditioning using a full LU solve which pretty much defeats the whole purpose of using the iterative solvers. We should allow the user to specify a precon…
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I tried "amg" in the tutorial but there were problems. The software worked for "CG solver" and "CG solver with AMG preconditioner, ONEPASS COARSENING, DIRECT INTERPOLATION" but failed for "CG with A…
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There are two issues when I install and test the `main` branch.
The first issue happens during `make`. My environment is:
- `system`: `ubuntu 24.04 LTS`
- `gcc`: `gcc (Ubuntu 13.2.0-23ubuntu4…
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**What needs to be documented?**
When trying to setup a simulation from scratch, I found that linear solver settings were not that easy to choose.
- Would it be possible to have some presets for s…