Search found 6 matches

by mewo2
01 May 2015, 14:23
Forum: Elmer/Ice
Topic: ParStokes and ice shelves
Replies: 3
Views: 5040

Re: ParStokes and ice shelves

Initially, using the actual ice shelf geometry, I thought that the GCR was failing to converge. However, I've been trying to reduce things to a simpler test case, and when I use a simple square geometry, I get (fairly slow) convergence of the GCR, but to a nonsensical result. I haven't been using an...
by mewo2
28 Apr 2015, 18:05
Forum: Elmer/Ice
Topic: ParStokes and ice shelves
Replies: 3
Views: 5040

ParStokes and ice shelves

I've been trying to run some small test simulations of an ice shelf using ParStokes, with an eye towards scaling up to looking at the long-term evolution of Larsen C. Unfortunately, I don't seem to be able to get the parallel solver to converge to anything remotely sensible. Identical runs with the ...
by mewo2
23 Mar 2015, 13:38
Forum: Elmer/Ice
Topic: ParStokes example .sif?
Replies: 4
Views: 7305

Re: ParStokes example .sif?

No, I'm fine with just 3d. I was only trying 2d for a quick test comparison between Navier-Stokes and ParStokes.
by mewo2
20 Mar 2015, 17:46
Forum: Elmer/Ice
Topic: elmerf90-nosh and Elmer/Ice tests
Replies: 6
Views: 9265

Re: elmerf90-nosh and Elmer/Ice tests

As an aside, a bit of git behaviour that puzzles me... "git checkout localBranch" checks out the local branch called localBranch. This is fine. "git checkout madeUpName", where madeUpName is not a branch name at all, returns an error. This is fine. "git checkout remoteBranc...
by mewo2
20 Mar 2015, 17:33
Forum: Elmer/Ice
Topic: ParStokes example .sif?
Replies: 4
Views: 7305

Re: ParStokes example .sif?

Thanks, Mika - I managed to figure it out on my own, but hopefully this will help others in the future.

Also, am I right in thinking that the ParStokes solver is 3d-only? I haven't had any success with 2d cases.
by mewo2
05 Mar 2015, 17:09
Forum: Elmer/Ice
Topic: ParStokes example .sif?
Replies: 4
Views: 7305

ParStokes example .sif?

Hi all, I'm trying to get up to speed with the ParStokes solver using the information on the wiki . However, I'm having trouble getting a simple inclined slab test-case to run. When I try, I get the error "ERROR:: LUDecomp: Matrix is singluar." , followed by a segfault from within ParStoke...