com.eignex.koblas/sparse/host

sparse.host

Types

F64SparseBackends

class F64SparseBackends(umfpackConfig: UmfpackConfig = UmfpackConfig(), kluConfig: KluConfig = KluConfig(), basicluConfig: BasicluConfig = BasicluConfig())

The independently configured sparse LU backends this native host can load from its host libraries.

class F64SparseBackends(kluConfig: KluConfig = KluConfig(), umfpackConfig: UmfpackConfig = UmfpackConfig(), basicluConfig: BasicluConfig = BasicluConfig())

The independently configured sparse LU backends this JVM can load from its host libraries.

F64SparseLuAdapter

abstract class F64SparseLuAdapter : F64SparseLu

Shared routing for a host sparse LU binding, the counterpart of the dense host adapters.

Functions

applyEquilibration

fun applyEquilibration(x: DoubleArray, scale: DoubleArray)

Undoes the scaling equilibrationScale applied, in place in x. The factors are of E·B, so a forward solve scales its right-hand side going in and a transposed solve scales its result coming out.

equilibrationScale

fun equilibrationScale(rows: Int, rowIdx: IntArray, values: DoubleArray): DoubleArray

The per-row factors the portable factorization equilibrates with: a power of two near 1/max|row|, so scaling is exact in binary floating point and a host binding that scales for itself agrees with the portable one entry for entry.

scaledValues

fun scaledValues(rowIdx: IntArray, values: DoubleArray, scale: DoubleArray): DoubleArray

values with every entry multiplied by its row's factor from scale, as a fresh array.