ICNS 2D doesn't work in parallel for p > 2

[Niclas Jansson]

Strange ghost point related bug for all ICNS demos. Creates artifacts on all shared boundaries.

In order to reproduce the error, run ucsolver/icns/bench2D with more then 2 processes.

[Johan Hoffman (jhoffman)]

When did this bug appear? You have been able to run 3D cylinder flow without problems, right? Or does this concern a specific branch? Unstable?

[Johan Jansson (jjan)]

Johan Hoffman wrote:
> When did this bug appear? You have been able to run 3D cylinder flow
> without problems, right? Or does this concern a specific branch?
> Unstable?
>
>
Yes, this only concerns the unstable branch (which uses the "trunk"/tip
DOLFIN).

  Johan

[Niclas Jansson (njansson)]

Johan Hoffman <email address hidden> writes:

> When did this bug appear? You have been able to run 3D cylinder flow
> without problems, right? Or does this concern a specific branch?
> Unstable?
>

It's unicorn-unstable for dolfin-tip. The bug has been fixed and
reappared several times since last fall. It affects _all_ unicorn solvers
running more then 2 processes. I have no idea what the problem could be,
it might even be a serious bug in dolfin.

> --
> ICNS 2D doesn't work in parallel for p > 2
> https://bugs.launchpad.net/bugs/540239
> You received this bug notification because you are a member of Unicorn
> Core Team, which is a bug assignee.
>
> Status in Unicorn: New
>
> Bug description:
>
> Strange ghost point related bug for all ICNS demos. Creates artifacts on all shared boundaries.
>
> In order to reproduce the error, run ucsolver/icns/bench2D with more then 2 processes.