Re: [Libmesh-devel] Debian package and installing libmesh without laspack and petsc

[Ondrej C. <on...@ce...>]

>  > Even adding a system in the first place may be a problem, because the
>  > System class will try to create a NumericVector for it's solution -
>  > it doesn't matter that you're never going to be solving with that
>  > vector, because the data structures for NumericVector subclasses
>  > depend on what solver you expect to hand them to later.  I'm afraid
>  > the only fix may be to add a "Dummy" subclass like you suggested
>  > except that it's not a dummy linear solver you need, it's dummy
>  > NumericVector (and if you insist on creating ImplicitSystem objects,
>  > SparseMatrix) instantiations.

Exactly, that's what I did in the debian package. I just made the
laspack vector and laspack matrix a dummy vector and a dummy matrix
(only I used the word laspack instead of dummy).

> DistributedVector (include/numerics/distributed_vector.h) should be a
> working built-in implementation of NumericVector
> that we can use for the "Dummy" solver package.

The LaspackVector actually derives from the NumericVector directly.
But I guess any solution would be fine.

Ondrej