inciter::DiagCG class

DiagCG Charm++ chare array used to advance PDEs in time with DiagCG+LW+FCT.

Public static functions

static void registerReducers()
Configure Charm++ custom reduction types initiated from this chare array.

Constructors, destructors, conversion operators

DiagCG(CkMigrateMessage* msg) explicit
Migrate constructor.

Public functions

auto DiagCG(const CProxy_Discretization& disc, const std::map<int, std::vector<std::size_t>>& bface, const std::map<int, std::vector<std::size_t>>& bnode, const std::vector<std::size_t>& triinpoel) -> DiagCG_SDAG_CODE explicit
Constructor.
void ResumeFromSync() override
Return from migration.
void resizeComm()
Size communication buffers (no-op)
void nodeNeighSetup()
Setup node-neighborhood (no-op)
void setup()
Setup: query boundary conditions, output mesh, etc.
void boxvol(tk::real v)
Receive total box IC volume.
void advance(tk::real newdt)
Advance equations to next time step.
void lhs()
Compute left-hand side of transport equations.
void comnorm(const std::unordered_map<std::size_t, std::array<tk::real, 4>>& innorm)
Receive boundary point normals on chare-boundaries.
void comlhs(const std::vector<std::size_t>& gid, const std::vector<std::vector<tk::real>>& L)
Receive contributions to left-hand side matrix on chare-boundaries.
void comrhs(const std::vector<std::size_t>& gid, const std::vector<std::vector<tk::real>>& R, const std::vector<std::vector<tk::real>>& D)
Receive contributions to right-hand side vector on chare-boundaries.
void update(const tk::Fields& a, tk::Fields&& dul)
Update solution at the end of time step.
void refine(tk::real l2res)
Optionally refine/derefine mesh.
void resizePostAMR(const std::vector<std::size_t>& ginpoel, const tk::UnsMesh::Chunk& chunk, const tk::UnsMesh::Coords& coord, const std::unordered_map<std::size_t, tk::UnsMesh::Edge>& addedNodes, const std::unordered_map<std::size_t, std::size_t>& addedTets, const tk::NodeCommMap& nodeCommMap, const std::map<int, std::vector<std::size_t>>&, const std::map<int, std::vector<std::size_t>>& bnode, const std::vector<std::size_t>&)
Receive new mesh from refiner.
auto solution() const -> const tk::Fields&
void resized()
Resizing data sutrctures after mesh refinement has been completed.
void step()
Evaluate whether to continue with next time step.
void evalLB(int nrestart)
void next()
Continue to 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, DiagCG& i)
Pack/Unpack serialize operator|.

Function documentation

static void inciter::DiagCG::registerReducers()

Configure Charm++ custom reduction types initiated from this chare array.

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.

DiagCG_SDAG_CODE inciter::DiagCG::DiagCG(const CProxy_Discretization& disc, const std::map<int, std::vector<std::size_t>>& bface, const std::map<int, std::vector<std::size_t>>& bnode, const std::vector<std::size_t>& triinpoel) explicit

Constructor.

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

void inciter::DiagCG::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::DiagCG::boxvol(tk::real v)

Receive total box IC volume.

Parameters
in Total volume within user-specified box

void inciter::DiagCG::advance(tk::real newdt)

Advance equations to next time step.

Parameters
newdt in Size of this new time step

void inciter::DiagCG::comnorm(const std::unordered_map<std::size_t, std::array<tk::real, 4>>& innorm)

Receive boundary point normals on chare-boundaries.

Parameters
innorm in Incoming partial sums of boundary point normal contributions to normals (first 3 components), inverse distance squared (4th component)

void inciter::DiagCG::comlhs(const std::vector<std::size_t>& gid, const std::vector<std::vector<tk::real>>& L)

Receive contributions to left-hand side matrix on chare-boundaries.

Parameters
gid in Global mesh node IDs at which we receive LHS contributions
in Partial contributions of LHS to chare-boundary nodes

This function receives contributions to m_lhs, which stores the diagonal (lumped) mass matrix at mesh nodes. While m_lhs stores own contributions, m_lhsc collects the neighbor chare contributions during communication. This way work on m_lhs and m_lhsc is overlapped. The two are combined in lhsmerge().

void inciter::DiagCG::comrhs(const std::vector<std::size_t>& gid, const std::vector<std::vector<tk::real>>& R, const std::vector<std::vector<tk::real>>& D)

Receive contributions to right-hand side vector on chare-boundaries.

Parameters
gid in Global mesh node IDs at which we receive RHS contributions
in Partial contributions of RHS to chare-boundary nodes
in Partial contributions to chare-boundary nodes

This function receives contributions to m_rhs, which stores the right hand side vector at mesh nodes. While m_rhs stores own contributions, m_rhsc collects the neighbor chare contributions during communication. This way work on m_rhs and m_rhsc is overlapped. The two are combined in solve(). This function also receives contributions to mass diffusion term of the right hand side vector at mesh nodes.

void inciter::DiagCG::update(const tk::Fields& a, tk::Fields&& dul)

Update solution at the end of time step.

Parameters
in Limited antidiffusive element contributions
dul in Low order solution increment

void inciter::DiagCG::resizePostAMR(const std::vector<std::size_t>& ginpoel, const tk::UnsMesh::Chunk& chunk, const tk::UnsMesh::Coords& coord, const std::unordered_map<std::size_t, tk::UnsMesh::Edge>& addedNodes, const std::unordered_map<std::size_t, std::size_t>& addedTets, const tk::NodeCommMap& nodeCommMap, const std::map<int, std::vector<std::size_t>>&, const std::map<int, std::vector<std::size_t>>& bnode, const std::vector<std::size_t>&)

Receive new mesh from refiner.

Parameters
ginpoel in Mesh connectivity with global node ids
chunk in New mesh chunk (connectivity and global<->local id maps)
coord in New mesh node coordinates
addedNodes in Newly added mesh nodes and their parents (local ids)
addedTets in Newly added mesh cells and their parents (local ids)
nodeCommMap in New node communication map
bnode in Boundary-node lists mapped to side set ids

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

Returns Const-ref to current solution

Const-ref access to current solution

void inciter::DiagCG::evalLB(int nrestart)

Parameters
nrestart in Number of times restarted

void inciter::DiagCG::pup(PUP::er& p) override

Pack/Unpack serialize member function.

Parameters
in/out Charm++'s PUP::er serializer object reference

void inciter::DiagCG::operator|(PUP::er& p, DiagCG& i)

Pack/Unpack serialize operator|.

Parameters
in/out Charm++'s PUP::er serializer object reference
in/out DiagCG object reference