[petsc-users] SuperLU MPI-problem

[Matthew Knepley]

We cannot say anything without the full error message.

  Matt

On Mon, Jul 20, 2015 at 9:38 AM, Mahir.Ulker-Kaustell at tyrens.se <
Mahir.Ulker-Kaustell at tyrens.se> wrote:

>  Dear Petsc-Users,
>
>
>
> I am trying to use PETSc to solve a set of linear equations arising from
> Naviers equation (elastodynamics) in the frequency domain.
>
> The frequency dependency of the problem requires that the system
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>                              [-omega^2M + K]u = F
>
>
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> where M and K are constant, square, positive definite matrices (mass and
> stiffness respectively) is solved for each frequency omega of interest.
>
> K is a complex matrix, including material damping.
>
>
>
> I have written a PETSc program which solves this problem for a small (1000
> degrees of freedom) test problem on one or several processors, but it keeps
> crashing when I try it on my full scale (in the order of 10^6 degrees of
> freedom) problem.
>
>
>
> The program crashes at KSPSetUp() and from what I can see in the error
> messages, it appears as if it consumes too much memory.
>
>
>
> I would guess that similar problems have occurred in this mail-list, so I
> am hoping that someone can push  me in the right direction…
>
>
>
> Mahir
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-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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