dolfin team mailing list archive

["Dag Lindbo" <dag@xxxxxxxxxx>]

Problem solved: We forgot the -DNDEBUG flag to the compiler (which means
uBLAS runs full bounds and conformity checking etc). Best to keep to the
'pkg-config' way of compiling :) Sorry.

  Dag

PS. Is NDEBUG defined by some header which happens to get included when
the LinearPDE is used? (this seems strange to me, but I really would like
to understand the different behaviors).

> Hi!
>
> We've run into what appears to be a strange bug with applying boundary
> conditions to uBlasMatrix. We implement assembly and boundary condition
> application (BoundaryCondition::apply()) in two different ways: manually
> and by LinearPDE. In the manual case (which replicates the LinearPDE
> implementation), we see an extreme slowdown in what looks to be the
> uBlasMatrix::ident() function. If we use the LinearPDE implementation the
> performance is as expected.
>
> I'm attaching a simple test case which demonstrates the issue. Has anyone
> experienced a similar issue or has an idea what goes wrong?
>
> This is with DOLFIN 0.7.2 (and should also appear with 0.7.1).
>
> Thanks,
>   Johan
>
>
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