dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Mon, Dec 03, 2007 at 01:05:51AM +0100, DOLFIN wrote:

> changeset:   3430:4fa0790a4fc34d3abac3079644368813a252ac61
> parent:      3428:7967082310c3ab03df9d812a6f471dcf988e7b4e
> user:        "Johan Jansson <jjan@xxxxxxxxxx>"
> date:        Sun Dec 02 20:17:50 2007 +0100
> files:       src/kernel/ode/MonoAdaptiveJacobian.cpp src/kernel/ode/MonoAdaptiveNewtonSolver.cpp src/kernel/ode/ODE.cpp src/kernel/ode/TimeSlabJacobian.cpp src/kernel/ode/dolfin/MonoAdaptiveJacobian.h src/kernel/ode/dolfin/MonoAdaptiveNewtonSolver.h src/kernel/ode/dolfin/ODE.h src/kernel/ode/dolfin/TimeSlabJacobian.h src/kernel/parameter/dolfin/DefaultParameters.h
> description:
> ODE:
> 
> Added support for computing the Jacobian as a sparse matrix (only for
> mono-adaptive dG(0) and cG(1) so far, and only for PETSc).

Why PETSc? The ODE solvers are tied to uBlas so the vectors won't be
parallel.

How and when should this be used? Does it change anything in the
computation that the ODE solver does, or is it just a utility function
for computing the Jacobian that a user can call?

-- 
Anders