Comments (2)
Schur-complement does not require the matrix to be structured in any way, you just have to pass the mask for the pressure variables:
amgcl/tutorial/4.Stokes/stokes_ucube.cpp
Lines 84 to 85 in 42ee9da
In the example it just happens to be regular. The advantage of regularity is that you can use block-valued solver on the U-part of the matrix, but again, it is not a requirement.
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thank you for the fast reply!
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