Struct Ilu0Preconditioner

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pub struct Ilu0Preconditioner { /* private fields */ }

Expand description

ILU(0) preconditioner — zero fill-in incomplete LU factorization.

Computes factors L and U such that LU ≈ A on the same sparsity pattern as A. The factorization is performed row-by-row (Crout variant).

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impl Ilu0Preconditioner

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pub fn compute(a: &GpuPrecondCsr) -> SparseResult<Self>

Compute ILU(0) factorization of a (must be square with non-zero diagonal).

§Errors

Returns SparseError::ValueError if the matrix is non-square or if a zero pivot is encountered during factorization.

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pub fn apply(&self, r: &Array1<f64>) -> Array1<f64>

Apply preconditioner: solve (LU) z = r.

Performs forward solve Ly = r then backward solve Uz = y.

Auto Trait Implementations§

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impl UnwindSafe for Ilu0Preconditioner

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fn into(self) -> U

Calls U::from(self).

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