Nektar::MultiRegions::GlobalLinSysPETSc::ShellCtx Struct Reference

Internal struct for MatShell and PCShell calls to store current context for callback. More...

#include <GlobalLinSysPETSc.h>

Collaboration diagram for Nektar::MultiRegions::GlobalLinSysPETSc::ShellCtx:

Public Attributes
int	nGlobal
	Number of global degrees of freedom. More...
int	nDir
	Number of Dirichlet degrees of freedom. More...
GlobalLinSysPETSc *	linSys
	Pointer to the original calling object. More...

Detailed Description

Internal struct for MatShell and PCShell calls to store current context for callback.

To use the MatShell/PCShell representation inside PETSc KSP and PC objects (so that we can use the local spectral element approach) requires the use of a callback function, which must be static. This is a lightweight wrapper allowing us to call a virtual function so that we can handle the static condensation/full variants of the global system.

See also

GlobalLinSysPETSc::DoMatrixMultiply

Definition at line 112 of file GlobalLinSysPETSc.h.

Member Data Documentation

GlobalLinSysPETSc* Nektar::MultiRegions::GlobalLinSysPETSc::ShellCtx::linSys

Pointer to the original calling object.

Definition at line 119 of file GlobalLinSysPETSc.h.

Referenced by Nektar::MultiRegions::GlobalLinSysPETSc::DoNekppOperation(), and Nektar::MultiRegions::GlobalLinSysPETSc::SetUpMatVec().

int Nektar::MultiRegions::GlobalLinSysPETSc::ShellCtx::nDir

Number of Dirichlet degrees of freedom.

Definition at line 117 of file GlobalLinSysPETSc.h.

Referenced by Nektar::MultiRegions::GlobalLinSysPETSc::DoNekppOperation(), and Nektar::MultiRegions::GlobalLinSysPETSc::SetUpMatVec().

int Nektar::MultiRegions::GlobalLinSysPETSc::ShellCtx::nGlobal

Number of global degrees of freedom.

Definition at line 115 of file GlobalLinSysPETSc.h.

Referenced by Nektar::MultiRegions::GlobalLinSysPETSc::DoNekppOperation(), and Nektar::MultiRegions::GlobalLinSysPETSc::SetUpMatVec().