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Working with @elise-palethorpe we see that the preconditioned conjugate gradient solver is much slower than expected. See #2654
In particular, benchmarks on solving the Poisson equation on a doubly…
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In Gridap 0.18, Tutorial 17 (transient equations) is broken in multiple ways:
Most importantly,
```julia
u₀ = interpolate_everywhere(0.0,U(0.0))
t₀ = 0.0
T = 10.0
uₕₜ = solve(ode_solver,op,u₀,…
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Hi guys,
I'm interested in the matrix-free (partial assembly) feature of MFEM. With partial assembly enabled, I tried a Jacobian smoother preconditioner, an LOR preconditioner, as well as preconditio…
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**Describe the issue**
I can obtain the correct results when using a single GPU to call AMGX to solve a system of linear equations (Poisson's equations), but when using openmpi and multi GPU parallel…
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Hello,
I would like to know if you have already used your AMGCL library on AMD graphics cards? It would be for the resolution of a pseudo Poisson equation in a fluid mechanics code (finite volume) w…
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### Describe new/missing feature
It is known that the Poisson equation has infinite solutions when the boundary conditions like pure neuman are considered. In the Legacy DOLFIN, we use the Lagrange M…
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Hi, I am trying to implement the Laplace equation in 2D as follows:
d2f/dx2 + d2f/dy2 = 0,
with Dirichlet boundary conditions:
f(x,1.0) = -1.0,
f(0.0,y) = f(1.0,y) = f(x,0.0) = 0.0.
Using the …
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Although Poisson-Boltzmann is not our priority, we have to start thinking how this implementation should be. Let's use this issue to collect some ideas.
There is a widely used tool to solve the Poi…
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For midterm: I could not find examples of code that show any reproduction of previous results, please add
add this to midterm milestone
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AMGX ships with many nice sample programs, including simple implementation of Poisson-like equations. Currently, the charge function (e.g. in A x = b, the array b) is set to 1.d0 everywhere.
This i…