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Re: Slow PetscInitialize?

 

On Sun, Oct 14, 2012 at 6:45 AM, Anders Logg <logg@xxxxxxxxx> wrote:
> PetscInitialize is taking a really long time for me. Is it just my
> PETSc build (petsc-3.2-p6 via Dorsal) or does anyone else see the same
> thing?
>
> Try the latest trunk and add a call to list_timings() just before the
> plot command in the Poisson demo. I see this:
>
> Init MPI                    |      0.025922    0.025922     1
> Init PETSc                  |       0.45424     0.45424     1
> Init dof vector             |       0.45455     0.45455     1

I get this on my laptop (Debian sid with libpetsc3.2-dev package):

Init MPI                    |      0.036537    0.036537     1
Init PETSc                  |    0.00026798  0.00026798     1
Init dof vector             |    0.00041413  0.00041413     1

This is what I get on bigblue (cluster on Simula) with PETSc 3.3-p3
built via Dorsal:

Init MPI                    |      0.029151    0.029151     1
Init PETSc                  |    0.00062299  0.00062299     1
Init dof vector             |    0.00091791  0.00091791     1

Johannes


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