ph Pusztay
mailto:josep...@buffalo.edu>>
Subject: Re: [petsc-users] Problems with the null-space removal
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Best,
Joe
From: MIGUEL MOLINOS PEREZ
Sent: Thursday, May 8, 2025 10:22 AM
To: Matthew Knepley
Cc: petsc-users@mcs.anl.gov ; Joseph Pusztay
Subject: Re: [petsc-users] Problems with the null-space removal
You don&#
This function “ DMSwarmCreatreSubswarm” is published somewhere? I can’t find it
in the main branch of PETSc.
Thanks,
Miguel
On May 6, 2025, at 9:03 AM, MIGUEL MOLINOS PEREZ wrote:
Oh, so you want to turn off some Swarm nodes? Joe has a
DMSwarmCreatreSubswarm() function somewhere. This might w
Oh, so you want to turn off some Swarm nodes? Joe has a
DMSwarmCreatreSubswarm() function somewhere. This might work.
This would be awesome!
Thanks,
Miguel
On 5 May 2025, at 21:43, Matthew Knepley wrote:
On Mon, May 5, 2025 at 2:08 PM MIGUEL MOLINOS PEREZ
mailto:mmoli...@us.es>> wrote:
Hi Ma
On Mon, May 5, 2025 at 2:08 PM MIGUEL MOLINOS PEREZ wrote:
> Hi Matt, thank you for your response!
>
> The most likely thing is that the nullspace is slightly wrong, or the
> convergence test is not accounting for the nullspace somehow.
>
> However, since so many equations are inactive, I would c
Hi Matt, thank you for your response!
The most likely thing is that the nullspace is slightly wrong, or the
convergence test is not accounting for the nullspace somehow.
However, since so many equations are inactive, I would consider projecting the
problem. I might either
1) Select a subset of
On Mon, May 5, 2025 at 3:52 AM MIGUEL MOLINOS PEREZ wrote:
> Dear all,
>
> I am working on the resolution of a non-linear problem via SNES with a
> large null-space (at least 70% of the equations are trivial). In a nutshell
> I have a mesh with active and non-active nodes, and the non-active node
Dear all,
I am working on the resolution of a non-linear problem via SNES with a large
null-space (at least 70% of the equations are trivial). In a nutshell I have a
mesh with active and non-active nodes, and the non-active nodes introduces the
null-space.
So far I've dealing with it using NG
