[petsc-users] Using Petsc with Finite Elements Domain Decomposition

[Ivano Barletta]

Dear Petsc users

my aim is to parallelize the solution of a linear
system into a finite elements
ocean model.

The model has been almost entirely parallelized, with
a partitioning of the domain made element-wise through
the use of Zoltan libraries, so the subdomains
share the nodes lying on the edges.

The linear system includes node-to-node dependencies
so my guess is that I need to create an halo surrounding
each subdomain, to allow connections of edge nodes with
neighbour subdomains ones

Apart from that, my question is if Petsc accept a
previously made partitioning (maybe taking into account of halo)
using the data structures coming out of it

Has anybody of you ever faced a similar problem?

Thanks in advance
Ivano
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