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Message #22816
Many small dense matrices or one big sparse...
Hello!
I am about to use DOLFIN to solve a set of distrinct ODEs. The ODEs are a
result of an operator splitting of a PDE, avoiding an expensive reassemble
each newton itteration.
Each ODE is potentially small but it needs to be solved for each node on a
mesh. What do you think would be fastest:
1) To solve each small ODE using a DenseMatrix and a direct solver
2) Put all the small dense matrices into a big sparse one and go for an
iterative solver.