..@msn.com
> CC: libmesh-users@lists.sourceforge.net
> Date: Tue, 3 Mar 2009 13:42:24 -0600
> Subject: Re: [Libmesh-users] Petsc slowness on a single processor machine
>
> > Thanks Ben.
> >
> > I use mpich2-1.0.7.
> >
> > After a discussion with PETSc dev
> Thanks Ben.
>
> I use mpich2-1.0.7.
>
> After a discussion with PETSc developpers, the problem might come from lots of
> allocation made by LibMesh within the call of PETSc. In fact if you look at
> the PETSc log summary of the problem I solve, you can clearly see that most of
> the time (more
t; To: tchou...@msn.com
> CC: libmesh-users@lists.sourceforge.net
> Date: Sun, 1 Mar 2009 14:53:25 -0600
> Subject: Re: [Libmesh-users] Petsc slowness on a single processor machine
>
>
> > Thanks for your answer Roy,
> >
> > I use libmesh-0.6.2 and petsc-2.3.3-p13 v
> Thanks for your answer Roy,
>
> I use libmesh-0.6.2 and petsc-2.3.3-p13 versions.
> I sent a mail to petsc users and we'll see what they say about that
> VecScatterCreate.
> Right now im checking whats going on in petsc_vector.C.
> Hope to get the answer quick.
What MPI are you using? VecScat
On Tue, 24 Feb 2009, STEPHANE TCHOUANMO wrote:
> I use libmesh-0.6.2 and petsc-2.3.3-p13 versions.
> I sent a mail to petsc users and we'll see what they say about that
> VecScatterCreate.
> Right now im checking whats going on in petsc_vector.C.
You might also try 0.6.3 or the SVN libMesh to s
05 -0600
> From: royst...@ices.utexas.edu
> To: tchou...@msn.com
> CC: libmesh-users@lists.sourceforge.net
> Subject: Re: [Libmesh-users] Petsc slowness on a single processor machine
>
>
> On Tue, 24 Feb 2009, STEPHANE TCHOUANMO wrote:
>
> > The built linear system&#x
On Tue, 24 Feb 2009, STEPHANE TCHOUANMO wrote:
> The built linear system's size is 3 and its resolution lasts
> about a hour on a single processor machine (my laptop...). I run
> for that a hundred time steps and have in average 4 Newton
> iterations per time step. So a hour seems huge to me
Hi,
I use the class petsc_nonlinear_solver to solve a nonlinear
convection-diffusion type equation in porous media.
The built linear system's size is 3 and its resolution lasts about a hour
on a single processor machine (my laptop...).
I run for that a hundred time steps and have in average
