inciter::DG class

DG Charm++ chare array used to advance PDEs in time with DG+RK.

Reference

Public static functions

static void registerReducers(): Configure Charm++ reduction types for concatenating BC nodelists.

Constructors, destructors, conversion operators

DG(CkMigrateMessage*) explicit: Migrate constructor.

Public functions

auto DG(const CProxy_Discretization& disc, const std::map<int, std::vector<std::size_t>>& bface, const std::map<int, std::vector<std::size_t>>&, const std::vector<std::size_t>& triinpoel) -> DG_SDAG_CODE explicit: Constructor.
void ResumeFromSync() override: Return from migration.
void resizeComm(): Start sizing communication buffers and setting up ghost data.
void comfac(int fromch, const tk::UnsMesh::FaceSet& infaces): Receive unique set of faces we potentially share with/from another chare.
void comGhost(int fromch, const GhostData& ghost): Receive ghost data on chare boundaries from fellow chare.
void reqGhost(): Receive requests for ghost data.
void sendGhost(): Send all of our ghost data to fellow chares.
void setup(): Setup: query boundary conditions, output mesh, etc.
void next(): Continue to next time step stage.
void comlim(int fromch, const std::vector<std::size_t>& tetid, const std::vector<std::vector<tk::real>>& u, const std::vector<std::size_t>& ndof): Receive chare-boundary limiter function data from neighboring chares.
void comsol(int fromch, std::size_t fromstage, const std::vector<std::size_t>& tetid, const std::vector<std::vector<tk::real>>& u, const std::vector<std::size_t>& ndof): Receive chare-boundary ghost data from neighboring chares.
void refine(): Optionally refine/derefine mesh.
void resizePostAMR(const std::vector<std::size_t>&, const tk::UnsMesh::Chunk& chunk, const tk::UnsMesh::Coords& coord, const std::unordered_map<std::size_t, tk::UnsMesh::Edge>&, const std::unordered_map<std::size_t, std::size_t>& addedTets, const std::unordered_map<int, std::vector<std::size_t>>& msum, const std::map<int, std::vector<std::size_t>>& bface, const std::map<int, std::vector<std::size_t>>&, const std::vector<std::size_t>& triinpoel): Receive new mesh from refiner.
auto solution() const -> const tk::Fields&
void lhs(): Compute left hand side.
void lim(): Compute limiter function.
void solution(tk::Fields& u) const
void resized(): Unused in DG.
void solve(tk::real newdt): Compute right hand side and solve system.
void step(): Evaluate whether to continue with next time step.

Charm++ pack/unpack serializer member functions

void pup(PUP::er& p) override: Pack/Unpack serialize member function.
void operator|(PUP::er& p, DG& i): Pack/Unpack serialize operator|.

Function documentation

static void inciter::DG::registerReducers()

Configure Charm++ reduction types for concatenating BC nodelists.

Since this is a [initnode] routine, the runtime system executes the routine exactly once on every logical node early on in the Charm++ init sequence. Must be static as it is called without an object. See also: Section "Initializations at Program Startup" at in the Charm++ manual http://charm.cs.illinois.edu/manuals/html/charm++/manual.html.

DG_SDAG_CODE inciter::DG::DG(const CProxy_Discretization& disc, const std::map<int, std::vector<std::size_t>>& bface, const std::map<int, std::vector<std::size_t>>&, const std::vector<std::size_t>& triinpoel) explicit

Constructor.

Parameters
disc in	Discretization proxy
bface in	Boundary-faces mapped to side set ids
triinpoel in	Boundary-face connectivity

void inciter::DG::ResumeFromSync() override

Return from migration.

This is called when load balancing (LB) completes. The presence of this function does not affect whether or not we block on LB.

void inciter::DG::comfac(int fromch, const tk::UnsMesh::FaceSet& infaces)

Receive unique set of faces we potentially share with/from another chare.

Parameters
fromch in	Sender chare id
infaces in	Unique set of faces we potentially share with fromch

void inciter::DG::comGhost(int fromch, const GhostData& ghost)

Receive ghost data on chare boundaries from fellow chare.

Parameters
fromch in	Caller chare ID
ghost in	Ghost data, see Inciter/FaceData.h for the type

void inciter::DG::comlim(int fromch, const std::vector<std::size_t>& tetid, const std::vector<std::vector<tk::real>>& u, const std::vector<std::size_t>& ndof)

Receive chare-boundary limiter function data from neighboring chares.

Parameters
fromch in	Sender chare id
tetid in	Ghost tet ids we receive solution data for
u in	Limited high-order solution
ndof in	Number of degrees of freedom for chare-boundary elements

This function receives contributions to the limited solution from fellow chares.

void inciter::DG::comsol(int fromch, std::size_t fromstage, const std::vector<std::size_t>& tetid, const std::vector<std::vector<tk::real>>& u, const std::vector<std::size_t>& ndof)

Receive chare-boundary ghost data from neighboring chares.

Parameters
fromch in	Sender chare id
fromstage in	Sender chare time step stage
tetid in	Ghost tet ids we receive solution data for
u in	Solution ghost data
ndof in	Number of degrees of freedom for chare-boundary elements

This function receives contributions to the unlimited solution from fellow chares.

void inciter::DG::resizePostAMR(const std::vector<std::size_t>&, const tk::UnsMesh::Chunk& chunk, const tk::UnsMesh::Coords& coord, const std::unordered_map<std::size_t, tk::UnsMesh::Edge>&, const std::unordered_map<std::size_t, std::size_t>& addedTets, const std::unordered_map<int, std::vector<std::size_t>>& msum, const std::map<int, std::vector<std::size_t>>& bface, const std::map<int, std::vector<std::size_t>>&, const std::vector<std::size_t>& triinpoel)

Receive new mesh from refiner.

Parameters
chunk in	New mesh chunk (connectivity and global<->local id maps)
coord in	New mesh node coordinates
addedTets in	Newly added mesh cells and their parents (local ids)
msum in	New node communication map
bface in	Boundary-faces mapped to side set ids
triinpoel in	Boundary-face connectivity

const tk::Fields& inciter::DG::solution() const

Returns	Const-ref to current solution

Const-ref access to current solution

void inciter::DG::solution(tk::Fields& u) const

Parameters
u in/out	Reference to update with current solution