Dune Core Modules (2.5.0)
torus.hh
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90 DUNE_THROW(Dune::Exception, "Communicator size and result of the given load balancer do not match!");
242 double partition (int rank, iTupel origin_in, iTupel size_in, iTupel& origin_out, iTupel& size_out) const
395 std::cout << "[" << rank() << "]: ERROR: local sends/receives do not match in exchange!" << std::endl;
402 std::cout << "[" << rank() << "]: ERROR: size in local sends/receive does not match in exchange!" << std::endl;
450 // std::cout << "[" << rank() << "]" << " send to " << _sendrequests[i].rank << " OK" << std::endl;
466 // std::cout << "[" << rank() << "]" << " recv fm " << _recvrequests[i].rank << " OK" << std::endl;
489 s << "[" << rank() << "]: Torus " << procs() << " processor(s) arranged as " << dims() << std::endl;
Various helper classes derived from from std::binary_function for stl-style functional programming.
Collective communication interface and sequential default implementation.
Definition: collectivecommunication.hh:79
int rank() const
Return rank, is between 0 and size()-1.
Definition: collectivecommunication.hh:93
int size() const
Number of processes in set, is greater than 0.
Definition: collectivecommunication.hh:99
Definition: torus.hh:279
ProcListIterator(typename std::deque< CommPartner >::const_iterator iter)
make an iterator
Definition: torus.hh:282
int distance() const
return 1-norm of distance vector
Definition: torus.hh:306
int index() const
return index in proclist
Definition: torus.hh:300
bool operator!=(const ProcListIterator &iter)
Return true when two iterators do not point to same member.
Definition: torus.hh:323
int rank() const
return rank of neighboring process
Definition: torus.hh:288
bool operator==(const ProcListIterator &iter)
Return true when two iterators point to same member.
Definition: torus.hh:316
iTupel delta() const
return distance vector
Definition: torus.hh:294
ProcListIterator & operator++()
Increment iterator to next cell.
Definition: torus.hh:329
Definition: torus.hh:43
int neighbors() const
return the number of neighbors, which is
Definition: torus.hh:206
iTupel rank_to_coord(int rank) const
map rank to coordinate in torus using lexicographic ordering
Definition: torus.hh:147
ProcListIterator sendbegin() const
first process in send list
Definition: torus.hh:340
int color(const iTupel &coord) const
assign color to given coordinate
Definition: torus.hh:177
ProcListIterator recvbegin() const
first process in receive list
Definition: torus.hh:352
int rank_relative(int rank, int dir, int cnt) const
return rank of process where its coordinate in direction dir has offset cnt (handles periodic case)
Definition: torus.hh:169
void recv(int rank, void *buffer, int size) const
store a receive request; buffers are received in order; handles also local requests with memcpy
Definition: torus.hh:377
int coord_to_rank(iTupel coord) const
map coordinate in torus to rank using lexicographic ordering
Definition: torus.hh:160
int dims(int i) const
return dimensions of torus in direction i
Definition: torus.hh:121
Torus(CollectiveCommunication comm, int tag, iTupel size, const YLoadBalance< d > *lb)
make partitioner from communicator and coarse mesh size
Definition: torus.hh:74
ProcListIterator recvend() const
last process in receive list
Definition: torus.hh:358
bool is_neighbor(iTupel delta, std::bitset< d > periodic) const
return true if neighbor with given delta is a neighbor under the given periodicity
Definition: torus.hh:215
void send(int rank, void *buffer, int size) const
store a send request; buffers are sent in order; handles also local requests with memcpy
Definition: torus.hh:364
void print(std::ostream &s) const
print contents of torus object
Definition: torus.hh:487
double partition(int rank, iTupel origin_in, iTupel size_in, iTupel &origin_out, iTupel &size_out) const
partition the given grid onto the torus and return the piece of the process with given rank; returns ...
Definition: torus.hh:242
bool inside(iTupel c) const
return true if coordinate is inside torus
Definition: torus.hh:139
void exchange() const
exchange messages stored in request buffers; clear request buffers afterwards
Definition: torus.hh:390
std::array< int, d > iTupel
type used to pass tupels in and out
Definition: torus.hh:46
a base class for the yaspgrid partitioning strategy The name might be irritating. It will probably ch...
Definition: partitioning.hh:24
This file provides tools to partition YaspGrids. If you want to write your own partitioner,...
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