#2899: BHNS with Elliptica: Assertion `all(offset == other.offset)' failed

Reporter: Alejandra Gonzalez Status: new Milestone: Version: Type: bug Priority: major Component:

Comment (by Roland Haas):

Sorry for the late response.

The error you see does not seem to be specific to Elliptica (which is good since I’d have no idea how to help debug it since it’s private code), but grid related.

If you have a backtrace file (`backtrace.<rank>.txt) that would be useful to maybe see who called this lower level function.

Since you mention Elliptica, does this happen right at the beginning (iteration 0) or during the simulation?

`offset` refers to by how much a refinement level is offset wrt to its parent level (more or less) it should be identical for boxes that are part of the same refinement level, so having this fail is strange.

Without running your parameter file (have to find a cluster), I would try and see if adding

``` CarpetRegrid2::snap_to_coarse = "yes" CarpetRegrid2::freeze_unaligned_parent_levels = "yes" CarpetRegrid2::freeze_unaligned_levels = "yes" ```

where the latter two should not do anything at `t=-0`.

-- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2899/bhns-with-elliptic...