PEXSI::SuperNodeType Struct Reference

SuperNodeType describes mapping between supernode and column, the permutation information, and potentially the elimination tree (not implemented here). More...

#include <pselinv.hpp>

Public Attributes
IntNumVec	perm
IntNumVec	permInv
IntNumVec	perm_r
IntNumVec	permInv_r
IntNumVec	superIdx
IntNumVec	superPtr
IntNumVec	etree

Detailed Description

SuperNodeType describes mapping between supernode and column, the permutation information, and potentially the elimination tree (not implemented here).

superIdx[i] is the supernode index to which column i belongs. This is the same as supno[i] in SuperLU.

superPtr[s] is the leading column of the s-th supernode (as in colptr). This is the same as xsup[s] in SuperLU.

e.g. superIdx 0 1 2 2 3 3 3 4 4 4 4 4 (n=12) superPtr 0 1 2 4 7 12

This is allocated during symbolic factorization SYMBFACT.

perm is the permutation vector. Symmetric permutation is assumed. perm is the same as ScalePermstruct -> perm_c.

permInv is the inverse of the permutation vector.

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The documentation for this struct was generated from the following file:

• include/pexsi/pselinv.hpp