Bug#953116: [petsc-maint] 32 bit vs 64 bit PETSc

[Junchao Zhang]

On Wed, May 27, 2020 at 12:09 AM Drew Parsons <dparsons at debian.org> wrote:

> On 2020-05-24 10:01, Drew Parsons wrote:
> > On 2020-05-23 23:45, Satish Balay wrote:
> >>
> >> One more issue: Most externalpackages don't support 64bit-indices.
> ...
> >> We haven't tried using MUMPS in this mode with PETSc
> >
> > This will be the interesting test. I'll start with the 64-bit build of
> > MUMPS and see how tests hold up.
>
>
> The PETSc mumps tests seem to be robust with respect to 64 bit.
> (64 bit MUMPS in the form of -DPORD_INTSIZE64, not all-integer
> -DINTSIZE64)
>
> That is, 32 bit PETSc passes its tests with 64 bit (PORD) MUMPS
> and 64 bit PETSc passes its tests with 32 bit MUMPS.
>
> The test in question that's passing is src/snes/tutorials/ex19, run with
> 'make runex19_fieldsplit_mumps'
> Perhaps it's not stress-testing 64 bit conditions.
>
Could you provide more details, e.g., the error stack trace?


>
> Drew
>
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