Bug#1085505: petsc: Current Petsc packages incompatible with openmpi 5.x in sid

[Giacomo Mulas]

On Mon, 21 Oct 2024, Francesco Ballarin wrote:

> Hi Giacomo,
> can you copy the part that starts with "any idea to create a version of
> petsc" into a new bug report for src:petsc?

Sure!

> I think what you are saying totally makes sense, but it would be good to
> properly keep track of it as a reminder for the TODO list.
> We will be starting with petsc 3.22 in a few weeks, so that may be a good
> time to have a try in adding --with-64-bit-blas-indices.
> We would have to double check if that requires us to change something in the
> blas-related package as well, or if the change is limited to petsc only.

You do need to link against the 64 flavour of scalapack/lapack/blas, but
they are all available in debian.  Possibly some other optional libs might
also need to be switched to the version using 64 bit integer indices, or not
included.  I do not know precisely because I do not need any of these in my
custom version of slepc/petsc, hence I simply omit all non essential
options.

Thanks, bye
Giacomo


-- 
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Giacomo Mulas <giacomo.mulas at inaf.it>
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