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[Bug 668862] Re: Sparsity pattern computation dead slow with 'real' spaces

 

Hake:
Is there a good way to profile this?

I have tried to compile the dolfin library with -gp and the above
mentioned cpp demo using -gp but it does not generate gprof information.

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Sparsity pattern computation dead slow with 'real' spaces
https://bugs.launchpad.net/bugs/668862
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Status in DOLFIN: New

Bug description:
The computation of the sparsity pattern is dead slow when real spaces are used, i.e.,

    R = FunctionSpace(mesh, 'R', 0)

To see the problem, compare the neumann-poisson and poisson demos with fine meshes (256x256)





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