dolfin team mailing list archive

[Johannes Ring <johannr@xxxxxxxxx>]

On Mon, Jun 21, 2010 at 11:52 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> On Mon, Jun 21, 2010 at 11:48:09PM +0200, Johannes Ring wrote:
>> On Mon, Jun 21, 2010 at 10:52 PM, Anders Logg <logg@xxxxxxxxx> wrote:
>> > 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.
>>
>> It doesn't work. I tried this test program
>>
>>   arma::mat A = arma::rand(4,4);
>>   arma::vec b = arma::rand(4);
>>   arma::vec x = arma::solve(A, b);
>>
>> and I got the same problem.
>>
>> Johannes
>
> Works for me. I've tried the following test program:
>
> #include <armadillo>
>
> int main()
> {
>  arma::mat A = arma::rand(4,4);
>  arma::vec b = arma::rand(4);
>  arma::vec x = arma::solve(A, b);
>
>  return 0;
> }

Yes, that's what I did. I also tried to build Armadillo (several
different versions) without debugging and I still got the same runtime
error.

> Compiled with
>
> g++ main.cpp -llapack
>
> Runs with with and without gdb. Also works fine with valgrind.
>
> Anyone else has this problem? I'm using the Armadillo Ubuntu package.

Maybe you can try to build Armadillo? Here are the steps:

  wget http://downloads.sourceforge.net/project/arma/armadillo-0.9.10.tar.gz
  tar zxf armadillo-0.9.10.tar.gz
  cd armadillo-0.9.10/
  mkdir build
  cd build
  cmake -DCMAKE_INSTALL_PREFIX:PATH=$PWD/local ..
  make && make install
  g++ -I$PWD/local/include -L$PWD/local/lib64 -larmadillo /path/to/test.cpp
  LD_LIBRARY_PATH=$PWD/local/lib64 ./a.out

> Shouldn't that be used on the buildbot?

Yes, but Armadillo wasn't added to Ubuntu before Karmic and the Ubuntu
buildbots are older than that. My plan was to upgrade them but the xen
server running on the host has problems (according to the sysadmins at
Simla) when upgrading from Jaunty to Karmic. The plan is therefore to
upgrade the host and then the buildbot slaves, but I'm not sure when
it will happen.

Johannes