On 2013-10-09 08:43, Corrado Maurini wrote:
I would like to propose minor modifications to PETScSNESSOLVER.
Before proceeding I have two questions:
- Is it fine for everybody if I remove the support to PETSC 3.2? It
complicates a lot the code and now PETSC 3.2 is obsolete (current
version 3.4). Moreover SNES solvers for bound constrained problems are
not reliable in 3.2.
I would like to remove support for PETSc 3.2, but 3.2 is the only
version available on Ubuntu. Version 3.4 has appeared in Debian, so will
probably make it into Ubuntu next year.
If you work on the code, as a compromise I would suggest not supporting
PETSc 3.2 in the SNES interface. As soon as PETSc 3.4 is widely
available as a package, we can drop support for 3.2 and 3.3 throughout
DOLFIN.
Garth
- Currently the function PETScSNESSolver::FormJacobian uses an
inefficient MatCopy of matrices after assembling, instead of passing
them as reference. Neither me nor Patrick were able to find a way do
it properly. May someone expert in shared pointers and friends help on
this point? I reported the details in issue #132 on bitbucket
(https://bitbucket.org/fenics-project/dolfin/issue/132/ [1]
Best,
Corrado
Links:
------
[1] https://bitbucket.org/fenics-project/dolfin/issue/132/
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