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The following assertion in line 539 of PETScLevelSolver.cpp fails when using the Shell PC
TBOX_ASSERT(n_local_dofs == static_cast(idxs.size()));
The issue seems to be caused by the follo…
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**solution depends on the number of levels of AMG grid**
I am encountering a convergence issue when using AMGX to solve a system of equations. When working with smaller arrays and the AMG number of…
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```
Lisandro Dalcin has sent us a nice example of solving a sparse system with
a scipy.sparse matrix by petsc4py - let's interface petsc solvers.
```
Original issue reported on code.google.com by `r…
-
```
Lisandro Dalcin has sent us a nice example of solving a sparse system with
a scipy.sparse matrix by petsc4py - let's interface petsc solvers.
```
Original issue reported on code.google.com by `r…
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Dear Hypre Team,
I am currently trying Hypre to solve a Poisson equation in 3D with Neumann boundary conditions. The stencil for the laplacian is quite large as it extends to 3 values on each side …
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Hi all,
I think this could be a forum post, but since this requires somewhat non-trivial programming knowledge, I will write it here.
[MFront/TFEL](https://thelfer.github.io/tfel/web/) is a wond…
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There are a number of concerns regarding this work.
- [x] 1) There is little innovation in this work. The formulation is well-known. There have been numerous papers on this approach.
- [x] 2) …
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I've successfully run the Marti dynamo test, and everything appears to be working great. However, the actual problem I want to solve (still a dynamo on a ball) will have slightly different equations. …
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Hello,
I'm working on solving a matrix equation that seems to be ill-conditioned, and I'm encountering convergence issues with all the configuration files provided in AMGX. I've attached a JPEG ima…
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Hello, developers. I tested the example in https://github.com/firedrakeproject/firedrake/blob/master/tests/slate/test_hdg_poisson.py, but I changed the solver to a direct solver(`mumps`) and got the w…