Send the code.
> On Jul 22, 2024, at 9:18 PM, Matthew Thomas via petsc-users
> <petsc-users@mcs.anl.gov> wrote:
>
> This Message Is From an External Sender
> This message came from outside your organization.
> Hello,
>
> I am using petsc and slepc to solve an eigenvalue problem for sparse
> matrices. When I run my code with double the number of processors, the memory
> usage also doubles.
>
> I am able to reproduce this behaviour with ex1 of slepc’s hands on exercises.
>
> The issue is occurring with petsc not with slepc as this still occurs when I
> remove the solve step and just create and assemble the petsc matrix.
>
> With n=100000, this uses ~1Gb with 8 processors, but ~5Gb with 40 processors.
>
> This was done with petsc 3.21.3, on linux compiled with Intel using Intel-MPI
>
> Is this the expected behaviour? If not, how can I bug fix this?
>
>
> Thanks,
> Matt
