Discretization class
Discretization Charm++ chare array holding common functinoality to all discretization schemes.
Contents
Public static functions
- static void registerReducers()
- Configure Charm++ reduction types.
Constructors, destructors, conversion operators
- Discretization(CkMigrateMessage* m) explicit
- Migrate constructor.
Public functions
-
auto Discretization(std::size_t meshid,
const CProxy_Transporter& transporter,
const tk::CProxy_MeshWriter& meshwriter,
const tk::
UnsMesh:: CoordMap& coordmap, const tk:: UnsMesh:: Chunk& el, const std::map<int, std::unordered_set<std::size_t>>& nodeCommMap, int nc) -> Discretization_SDAG_CODE explicit - Constructor.
-
void resizePostAMR(const tk::
UnsMesh:: Chunk& chunk, const tk:: UnsMesh:: Coords& coord, const std::unordered_map<int, std::unordered_set<std::size_t>>& nodeCommMap, const std::set<std::size_t>& removedNodes) - Resize mesh data structures after mesh refinement.
- void startvol()
- Get ready for (re-)computing/communicating nodal volumes.
- void vol()
- Sum mesh volumes to nodes, start communicating them on chare-boundaries.
- void setRefiner(const CProxy_Refiner& ref)
- Set Refiner Charm++ proxy.
-
void comvol(int c,
const std::vector<std::size_t>& gid,
const std::vector<tk::
real>& nodevol) - Collect nodal volumes across chare boundaries.
- void totalvol()
- Sum mesh volumes and contribute own mesh volume to total volume.
-
void stat(tk::
real mesh_volume) - Compute mesh cell statistics.
- auto deastart() -> bool
- Decide whether to start the deactivation procedure in this time step.
- auto deactivate() const -> bool
- Decide whether to run deactivation procedure in this time step.
- void deactivated(int n)
- Receive deactivation report.
- auto lb() const -> bool
- Decide whether to do load balancing this time step.
- void boxvol()
- Compute total box IC volume.
Charm++ pack/unpack serializer member functions
- std::size_t m_meshid
- Mesh ID.
- int m_nchare
- Total number of Discretization chares.
- uint64_t m_it
- Iteration count.
- uint64_t m_itr
- uint64_t m_itf
- std::size_t m_initial
- Flag that is nonzero during setup and zero during time stepping.
- tk::
real m_t - Physical time.
- tk::
real m_lastDumpTime - Physics time at last field output.
- tk::
real m_physFieldFloor - Recent floor of physics time divided by field output interval time.
- tk::
real m_physHistFloor - Recent floor of physics time divided by history output interval time.
- tk::
real m_physIntegFloor - Recent floor of physics time divided by integral output interval time.
- std::vector<tk::
real> m_rangeFieldFloor - Recent floors of physics time divided by field output time for ranges.
- std::vector<tk::
real> m_rangeHistFloor - Recent floors of physics time divided by history output time for ranges.
- std::vector<tk::
real> m_rangeIntegFloor - Recent floors of physics time divided by integral output time for ranges.
- tk::
real m_dt - Physical time step size.
- tk::
real m_dtn - Physical time step size at the previous time step.
- std::size_t m_nvol
- Number of chares from which we received nodal volume contributions on chare boundaries.
- std::vector<std::unordered_set<std::size_t>> m_boxnodes
- List of nodes at which box user ICs are set for each IC box.
- CProxy_Transporter m_transporter
- Transporter proxy.
- tk::CProxy_MeshWriter m_meshwriter
- Mesh writer proxy.
- CProxy_Refiner m_refiner
- Mesh refiner proxy.
- tk::
UnsMesh:: Chunk m_el - Elements of the mesh chunk we operate on.
- std::vector<std::size_t>& m_inpoel
- Alias to element connectivity.
- std::vector<std::size_t>& m_gid
- Alias to global node IDs of owned elements.
- std::unordered_map<std::size_t, std::size_t>& m_lid
- Alias to local node ids associated to the global ones of owned elements.
- tk::
UnsMesh:: Coords m_coord - Mesh point coordinates.
- std::unordered_map<int, std::unordered_set<std::size_t>> m_nodeCommMap
- Global mesh node IDs bordering the mesh chunk held by fellow Discretization chares associated to their chare IDs.
- tk::
real m_meshvol - Total mesh volume.
- std::vector<tk::
real> m_v - std::vector<tk::
real> m_vol - std::unordered_map<std::size_t, tk::
real> m_volc - std::unordered_map<int, std::unordered_map<std::size_t, tk::
real>> m_cvolc - tk::
real m_boxvol - Volume of user-defined box IC.
- tk::
Timer m_timer - Timer measuring a time step.
- int m_refined
- 1 if mesh was refined in a time step, 0 if it was not
- Clock::time_point m_prevstatus
- Time point storing clock state at status()
- int m_nrestart
- Number of times restarted.
- std::vector<HistData> m_histdata
- Data at history point locations.
- tk::
real m_res - Current residual (during convergence to steady state)
- tk::
real m_res0 - Residual at previous ETA calcuation (during convergence to steady state)
- tk::
real m_res1 - Residual at next ETA calcuation (during convergence to steady state)
- int m_dea
- Numberf of deactived chares.
- int m_deastarted
- Flag: 1 if deactivation procedure has started.
- void pup(PUP::er& p) override
- Pack/Unpack serialize member function.
- void operator|(PUP::er& p, Discretization& i)
- Pack/Unpack serialize operator|.
Accessors
-
auto Coord() const -> const tk::
UnsMesh:: Coords& -
auto Coord() -> tk::
UnsMesh:: Coords& - Coordinates accessor as reference.
- auto Gid() const -> const std::vector<std::size_t>&
- Global ids accessors as const-ref.
- auto Lid() const -> const std::unordered_map<std::size_t, std::size_t>&
- Local ids accessors as const-ref.
- auto Inpoel() const -> const std::vector<std::size_t>&
- Tetrahedron element connectivity (with local ids) accessors as const-ref.
-
auto Chunk() const -> const tk::
UnsMesh:: Chunk& - Mesh chunk accessor as const-ref.
-
auto meshvol() const -> tk::
real - Total mesh volume accessor.
-
auto V() const -> const std::vector<tk::
real>& - Nodal mesh volume accessors const-ref.
-
auto Vol() const -> const std::vector<tk::
real>& - Nodal mesh volumes at current time step accessors as const-ref.
-
auto Cvolc() const -> const std::unordered_map<int, std::unordered_map<std::size_t, tk::
real>>& - Access chare-volume contributions per chare per chare-boundary node.
- auto nchare() const -> int
- Access number of chares.
- void Initial(std::size_t i)
- auto Initial() const -> bool
- auto Hist() const -> const std::vector<HistData>&
- History points data accessor as const-ref.
-
auto Boxvol() -> tk::
real& - Box volume accessor.
- auto MeshId() const -> std::size_t
- Mesh ID accessor.
-
auto Dt() const -> tk::
real - Time step size accessor.
-
auto Dtn() const -> tk::
real - Time step size at previous time step accessor.
-
auto T() const -> tk::
real - Physical time accessor.
- auto It() const -> uint64_t
- Iteration count accessor.
- auto Itr() -> uint64_t&
- Non-const-ref refinement iteration count accessor.
- auto Itf() -> uint64_t&
- Non-const-ref field-output iteration count accessor.
- auto Nrestart() -> int&
- Non-const-ref number of restarts accessor.
-
auto Timer() const -> const tk::
Timer& - Timer accessor as const-ref.
-
auto Timer() -> tk::
Timer& - Timer accessor as non-const-ref.
- auto refined() const -> int
- Accessor to flag indicating if the mesh was refined as a value.
- auto refined() -> int&
- Accessor to flag indicating if the mesh was refined as non-const-ref.
- auto Tr() const -> const CProxy_Transporter&
- Transporter proxy accessor as const-ref.
- auto Tr() -> CProxy_Transporter&
- Transporter proxy accessor as non-const-ref.
- auto Ref() const -> Refiner*
- Access bound Refiner class pointer.
- auto NodeCommMap() const -> const std::unordered_map<int, std::unordered_set<std::size_t>>&
- Node communication map accessor as const-ref.
- auto BoxNodes() const -> const std::vector<std::unordered_set<std::size_t>>&
- IC boxnodes accessor.
-
void setdt(tk::
real newdt) - Set time step size.
- void next()
- Prepare for next step.
- void status()
- Otput one-liner status report.
- auto histfilename(const std::string& id, std::streamsize precision) -> std::string
- Construct history output filename.
- void histheader(std::vector<std::string>&& names)
- Output headers for time history files (one for each point)
-
void history(std::vector<std::vector<tk::
real>>&& data) - Output time history for a time step.
-
void write(const std::vector<std::size_t>& inpoel,
const tk::
UnsMesh:: Coords& coord, 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, const std::vector<std::string>& elemfieldnames, const std::vector<std::string>& nodefieldnames, const std::vector<std::string>& elemsurfnames, const std::vector<std::string>& nodesurfnames, const std::vector<std::vector<tk:: real>>& elemfields, const std::vector<std::vector<tk:: real>>& nodefields, const std::vector<std::vector<tk:: real>>& elemsurfs, const std::vector<std::vector<tk:: real>>& nodesurfs, CkCallback c) - Output mesh and fields data (solution dump) to file(s)
- void grindZero()
- Zero grind-timer.
- auto restarted(int nrestart) -> bool
- Detect if just returned from a checkpoint and if so, zero timers.
- void remap(const std::unordered_map<std::size_t, std::size_t>& map)
- Remap mesh data due to new local ids.
- auto fielditer() const -> bool
- Decide if field output iteration count interval is hit.
- auto fieldtime() const -> bool
- Decide if field output physics time interval is hit.
- auto fieldrange() const -> bool
- Decide if physics time falls into a field output time range.
- auto histiter() const -> bool
- Decide if history output iteration count interval is hit.
- auto histtime() const -> bool
- Decide if history output physics time interval is hit.
- auto histrange() const -> bool
- Decide if physics time falls into a history output time range.
- auto integiter() const -> bool
- Decide if integral output iteration count interval is hit.
- auto integtime() const -> bool
- Decide if integral output physics time interval is hit.
- auto integrange() const -> bool
- Decide if physics time falls into a integral output time range.
- auto finished() const -> bool
- Decide if this is the last time step.
-
void residual(tk::
real r) - Update residual (during convergence to steady state)
Function documentation
static void inciter::
Configure Charm++ reduction types.
Since this is a [initnode] routine, see the .ci file, the Charm++ 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:/
Discretization_SDAG_CODE inciter::
Constructor.
| Parameters | |
|---|---|
| meshid in | Mesh ID |
| transporter in | Host (Transporter) proxy |
| meshwriter in | Mesh writer proxy |
| coordmap in | Coordinates of mesh nodes and their global IDs |
| el in | Elements of the mesh chunk we operate on |
| nodeCommMap in | Node lists associated to chare IDs bordering the mesh chunk we operate on |
| nc in | Total number of Discretization chares |
void inciter::
Resize mesh data structures after mesh refinement.
| Parameters | |
|---|---|
| chunk in | New mesh chunk (connectivity and global<->local id maps) |
| coord in | New mesh node coordinates |
| nodeCommMap in | New node communication map |
| removedNodes in | Newly removed mesh node local ids |
void inciter::
Set Refiner Charm++ proxy.
| Parameters | |
|---|---|
| ref in | Incoming refiner proxy to store |
void inciter::
Collect nodal volumes across chare boundaries.
| Parameters | |
|---|---|
| c in | Sender chare id |
| gid in | Global mesh node IDs at which we receive volume contributions |
| nodevol in | Partial sums of nodal volume contributions to chare-boundary nodes |
bool inciter::
Decide whether to start the deactivation procedure in this time step.
| Returns | True to start the deactivation prcedure in this time step |
|---|
bool inciter::
Decide whether to run deactivation procedure in this time step.
| Returns | True to run deactivation prcedure in this time step |
|---|
void inciter::
Receive deactivation report.
| Parameters | |
|---|---|
| n in | Sum of deactivated chares |
bool inciter::
Decide whether to do load balancing this time step.
| Returns | True to do load balancing in this time step |
|---|
void inciter::
Pack/Unpack serialize member function.
| Parameters | |
|---|---|
| p in/out | Charm++'s PUP::er serializer object reference |
void inciter::
Pack/Unpack serialize operator|.
| Parameters | |
|---|---|
| p in/out | Charm++'s PUP::er serializer object reference |
| i in/out | Discretization object reference |
const tk::
Coordinates accessor as const-ref
void inciter::
| Parameters | |
|---|---|
| i in | Value to put in 'initial' |
Set 'initial' flag
bool inciter::
| Returns | True during setup, false durign time stepping |
|---|
Query 'initial' flag
std::string inciter::
Construct history output filename.
| Parameters | |
|---|---|
| id in | History point id |
| precision in | Floating point precision to use for output |
| Returns | History file name |
void inciter::
Output headers for time history files (one for each point)
| Parameters | |
|---|---|
| names in | History output variable names |
void inciter::
Output mesh and fields data (solution dump) to file(s)
| Parameters | |
|---|---|
| inpoel in | Mesh connectivity for the mesh chunk to be written |
| coord in | Node coordinates of the mesh chunk to be written |
| bface in | Map of boundary-face lists mapped to corresponding side set ids for this mesh chunk |
| bnode in | Map of boundary-node lists mapped to corresponding side set ids for this mesh chunk |
| triinpoel in | Interconnectivity of points and boundary-face in this mesh chunk |
| elemfieldnames in | Names of element fields to be output to file |
| nodefieldnames in | Names of node fields to be output to file |
| elemsurfnames in | Names of elem surface fields to be output to file |
| nodesurfnames in | Names of node surface fields to be output to file |
| elemfields in | Field data in mesh elements to output to file |
| nodefields in | Field data in mesh nodes to output to file |
| elemsurfs in | Surface field data in mesh elements to output to file |
| nodesurfs in | Surface field data in mesh nodes to output to file |
| c in | Function to continue with after the write |
Since m_meshwriter is a Charm++ chare group, it never migrates and an instance is guaranteed on every PE. We index the first PE on every logical compute node. In Charm++'s non-SMP mode, a node is the same as a PE, so the index is the same as CkMyPe(). In SMP mode the index is the first PE on every logical node. In non-SMP mode this yields one or more output files per PE with zero or non-zero virtualization, respectively. If there are multiple chares on a PE, the writes are serialized per PE, since only a single entry method call can be executed at any given time. In SMP mode, still the same number of files are output (one per chare), but the output is serialized through the first PE of each compute node. In SMP mode, channeling multiple files via a single PE on each node is required by NetCDF and HDF5, as well as ExodusII, since none of these libraries are thread-safe.
bool inciter::
Detect if just returned from a checkpoint and if so, zero timers.
| Parameters | |
|---|---|
| nrestart in | Number of times restarted |
| Returns | True if restart detected |
void inciter::
Remap mesh data due to new local ids.
| Parameters | |
|---|---|
| map in | Mapping of old->new local ids |
bool inciter::
Decide if field output iteration count interval is hit.
| Returns | True if field output iteration count interval is hit |
|---|
bool inciter::
Decide if field output physics time interval is hit.
| Returns | True if field output physics time interval is hit |
|---|
bool inciter::
Decide if physics time falls into a field output time range.
| Returns | True if physics time falls into a field output time range |
|---|
bool inciter::
Decide if history output iteration count interval is hit.
| Returns | True if history output iteration count interval is hit |
|---|
bool inciter::
Decide if history output physics time interval is hit.
| Returns | True if history output physics time interval is hit |
|---|
bool inciter::
Decide if physics time falls into a history output time range.
| Returns | True if physics time falls into a history output time range |
|---|
bool inciter::
Decide if integral output iteration count interval is hit.
| Returns | True if integral output iteration count interval is hit |
|---|
bool inciter::
Decide if integral output physics time interval is hit.
| Returns | True if integral output physics time interval is hit |
|---|
bool inciter::
Decide if physics time falls into a integral output time range.
| Returns | True if physics time falls into a integral output time range |
|---|
bool inciter::
Decide if this is the last time step.
| Returns | True if this is the last time step |
|---|
Variable documentation
uint64_t inciter::
Iteration count with mesh refinement
Used as the restart sequence number {RS} in saving output in an ExodusII sequence
uint64_t inciter::
Field output iteration count without mesh refinement
Counts the number of field outputs to file during two time steps with mesh efinement
tk::
Elements of the mesh chunk we operate on.
Initialized by the constructor. The first vector is the element connectivity (local IDs), the second vector is the global node IDs of owned elements, while the third one is a map of global->local node IDs.
std::unordered_map<std::size_t, tk::
Receive buffer for volume of nodes (with global node id as key)
This is a communication buffer used to compute the volume of the mesh associated to nodes of owned elements (sum of surrounding cell volumes / 4) with contributions from other chares on chare-boundaries.