Yes, that's what is weird. --cjc ________________________________________ From: firedrake-bounces@imperial.ac.uk [firedrake-bounces@imperial.ac.uk] on behalf of Lawrence Mitchell [lawrence.mitchell@imperial.ac.uk] Sent: 20 November 2014 08:59 To: firedrake Subject: Re: [firedrake] parallel weirdness On 20 Nov 2014, at 07:32, Colin Cotter <colin.cotter@imperial.ac.uk> wrote:
Hi Lawrence, Why does that term change the Krylov space? It's either added in ures, or in that line. Cjc
So it's possible I didn't manage to unpick what's going on there properly. So I search in the space span{r_0, A r_0, ...} Where A is the velocity mass matrix and r_0 the initial residual. So if I change Lures to remove this div term, I thought that maybe r_0 would change. But are you saying it's come in from the initial guess in that case (because you've just moved it around)? Lawrence