JuliaLinearAlgebra / AlgebraicMultigrid.jl

Algebraic Multigrid in Julia
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error on Poisson system with modified diagonal #56

Closed dahtah closed 2 years ago

dahtah commented 5 years ago

The following gives me an error:

ml = ruge_stuben(poisson(27000)+24.0*I)

This results in: ERROR: ArgumentError: reducing over an empty collection is not allowed It occurs for sufficiently large values on the diagonal, I'm guessing something goes wrong in the coarsening.

ranjanan commented 2 years ago

Closed by #83