dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Mon, Jun 21, 2010 at 10:16:05PM +0200, Johannes Ring wrote:
> On Mon, Jun 21, 2010 at 9:12 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> > On Mon, Jun 21, 2010 at 02:37:26PM +0200, Johannes Ring wrote:
> >> On Mon, Jun 21, 2010 at 1:53 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> >> > On Wed, Jun 16, 2010 at 11:49:32AM +0200, Johannes Ring wrote:
> >> >> On Wed, Jun 16, 2010 at 11:27 AM, Anders Logg <logg@xxxxxxxxx> wrote:
> >> >> > When should the deadline be for making the new releases?
> >> >> >
> >> >> > Is it too later if we finish by June 23rd?
> >> >>
> >> >> Well, it might be too late for automatic imports from Debian to
> >> >> Ubuntu, but I can request manual imports later. It worked out fine the
> >> >> last time. So June 23rd sounds good for me.
> >> >
> >> > ok, let's aim for 23rd (Wednesday this week).
> >> >
> >> > Anything that we need to fix before the release?
> >> >
> >> > The buildbot fails with this message when running the extrapolation demo:
> >> >
> >> >  run-time error: auxlib::solve_od(): need LAPACK
> >>
> >> I have the same problem on my laptop.
> >>
> >> > Is there something that needs to be installed on the buildbot?
> >>
> >> I'm not sure whats wrong but the problem seems to be that I have built
> >> Armadillo with debugging turned on (-DCMAKE_BUILD_TYPE:STRING=Debug)
> >> on the buildbot (and on my laptop). When I run gdb on
> >> demo/adaptivity/extrapolation/cpp I get this:
> >>
> >> [...]
> >> #7  0xb76340b9 in dolfin::Extrapolation::compute_coefficients
> >> (coefficients=@0xbfe89fc0, v=@0xbfe8a258, V=@0xbfe8a3b8,
> >> W=@0xbfe8a338,
> >>     cell0=@0xbfe89f98, c0=@0xbfe89f58, dofs=@0xbfe89fd0, offset=@0xbfe89fcc)
> >>     at /home/johannr/src/armadillo-0.6.10/Build/local/include/armadillo_bits/debug.hpp:218
> >> #8  0xb7634e5b in dolfin::Extrapolation::extrapolate (w=@0xbfe8a178,
> >> v=@0xbfe8a258) at dolfin/adaptivity/Extrapolation.cpp:72
> >> #9  0xb740bd54 in dolfin::Function::extrapolate (this=0xbfe8a178,
> >> v=@0xbfe8a258) at dolfin/function/Function.cpp:330
> >> #10 0x0805c768 in main () at main.cpp:44
> >>
> >> Should I just rebuild Armadillo with debugging off on the buildbots?
> >>
> >> Johannes
> >
> > Could you add some debugging to Extrapolation.cpp to see where things
> > go wrong? Find the line that says
> >
> >  arma::Col<double> x = arma::solve(A, b);
> >
> > and print something before and after. It would be interesting to see
> > if
> >
> >  1. This is where it breaks
> >  2. It breaks already the first time or just for particular input data
>
> Yes, this is where it breaks and it breaks the first time. Anything
> else I should try?
>
> Johannes

Can you check if you are able to run call arma::solve(A, b) at all?

  arma::mat A(M, N);
  arma::vec b(M);

  then set some bogus values in A and b

  arma::Col<double> x = arma::solve(A, b);

By the way, why is the output arma::Col and not arma::vec? Garth?

If this works, then try to print the size of A and b in
Extrapolation.cpp and try the same size in your test program.

--
Anders

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