peclet::core::solver::HostCsrOp Struct Reference

A general assembled sparse operator in CSR form: the diagonal is stored separately and the CSR (start/nbr/coef) holds only the OFF-diagonal entries. More...

#include <graph_amg.hpp>

Public Member Functions
void	apply (const std::vector< double > &x, std::vector< double > &y) const
	y = A x.

Public Attributes
Index	n = 0
std::vector< double >	diag
	size n
std::vector< Index >	start
	size n+1, off-diagonal row offsets
std::vector< Index >	nbr
	size nnz (off-diagonal column indices)
std::vector< double >	coef
	size nnz (off-diagonal values)

Detailed Description

A general assembled sparse operator in CSR form: the diagonal is stored separately and the CSR (start/nbr/coef) holds only the OFF-diagonal entries.

SPD is assumed for the SA-AMG hierarchy. This is the mesh-agnostic operator the device path will mirror as a Kokkos-View CSR (the same layout core::amr::FaceCsrOpT exposes), so the host oracle and the device operator share one arithmetic.

Definition at line 52 of file graph_amg.hpp.

Member Function Documentation

apply()

void peclet::core::solver::HostCsrOp::apply ( const std::vector< double > &  x, std::vector< double > &  y  ) const

inline

y = A x.

Definition at line 60 of file graph_amg.hpp.

References coef, diag, n, nbr, and start.

Referenced by peclet::core::solver::amgPcg().

Member Data Documentation

n

Index peclet::core::solver::HostCsrOp::n = 0

Definition at line 53 of file graph_amg.hpp.

Referenced by peclet::core::solver::amgPcg(), apply(), and peclet::core::solver::GraphAMG::size().

diag

std::vector<double> peclet::core::solver::HostCsrOp::diag

size n

Definition at line 54 of file graph_amg.hpp.

Referenced by apply().

start

std::vector<Index> peclet::core::solver::HostCsrOp::start

size n+1, off-diagonal row offsets

Definition at line 55 of file graph_amg.hpp.

Referenced by apply().

nbr

std::vector<Index> peclet::core::solver::HostCsrOp::nbr

size nnz (off-diagonal column indices)

Definition at line 56 of file graph_amg.hpp.

Referenced by apply().

coef

std::vector<double> peclet::core::solver::HostCsrOp::coef

size nnz (off-diagonal values)

Definition at line 57 of file graph_amg.hpp.

Referenced by apply().

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

• graph_amg.hpp