(Optional) Defines the relaxation weight for smoothed Jacobi and hybrid SOR on all levels
(Optional) Defines the relaxation weight for smoothed Jacobi and hybrid SOR on all levels.
relax_weight > 0 this assigns the given relaxation weight on all levels relax_weight = 0 the weight is determined on each level with the estimate ,
where is the diagonal matrix of
(this should only be used with Jacobi)
relax_weight = -k the relaxation weight is determined with at most k CG steps on each level this should only be used for symmetric positive definite problems) The default is 1.
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