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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hi all,<br>
<br>
I have a quick question about the preconditioning.<br>
<br>
So far I have written a linear operator for a system I need to solve.<br>
Suppose I want to use a BiCGSTAB or a GMRES to solve the system; one option is to create an instance of Dune::Fem::OEMBICGSTABOp.<br>
Since I want to pass to the solver my own preconditioner (derived from one paper in literature), how can I provide it correctly?<br>
In addition, since it's a block preconditioner, I suspect I'll have to provide a solve () method, i.e. how to "invert" it numerically.<br>
<br>
How can I do all these things in Dune-Fem?<br>
Is there any special restriction with the type of grid functions (Adaptive vs. BlockVector type)?<br>
<br>
Thanks in advance!<br>
<br>
Andrea<br>
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<div style="font-family:Tahoma; font-size:13px">__________________________________________________________<br>
<br>
Andrea Sacconi<br>
PhD student, Applied Mathematics<br>
AMMP Section, Department of Mathematics, Imperial College London,<br>
London SW7 2AZ, UK<br>
a.sacconi11@imperial.ac.uk<br>
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