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Message #26014
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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