On 4/25/23 07:15, Stefan Karch wrote:
I am trying to implement a CG Solver with my own VectorType. According
to Lecture 21, what one needs is that the Vector and Operator are
compatible, and that the operator has a vmult-function. However, the
compiler misses a lot of member function of my own Vector class. Am I
doing something wrong or do I need to implement all additional member
function for "MyVector"?
Stefan:
that's the only requirement on the "operator* (that it has to have a
vmult function), but the vector really needs to satisfy pretty much the
entire VectorSpaceVector interface. CG and the other iterative solvers
require dot products, vector updates, and norms -- all functions you
need to implement in the vector class you want to use.
While there are good reasons to implement your own operator class, it
isn't quite clear to me why anyone would want to implement their own
vector class. Can you elaborate on this point?
Best
W.
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Wolfgang Bangerth email: [email protected]
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