/usr/include/dune/grid/test/checkcomcorrectness.hh is in libdune-grid-dev 2.5.1-1.
This file is owned by root:root, with mode 0o644.
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// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_GRID_TEST_CHECKCOMMCORRECTNESS_HH
#define DUNE_GRID_TEST_CHECKCOMMCORRECTNESS_HH
#include <config.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <unordered_set>
#include <unordered_map>
#include <unistd.h>
#include <dune/common/hash.hh>
#include <dune/common/float_cmp.hh>
#include <dune/geometry/dimension.hh>
#include <dune/grid/common/capabilities.hh>
#include <dune/grid/common/datahandleif.hh>
#include <dune/grid/common/gridenums.hh>
#include <dune/grid/common/mcmgmapper.hh>
namespace Dune {
std::size_t hash_value(const PartitionType& pt)
{
return static_cast<std::size_t>(pt);
}
}
DUNE_DEFINE_HASH(DUNE_HASH_TEMPLATE_ARGS(),DUNE_HASH_TYPE(Dune::PartitionType))
namespace Dune {
namespace GridCheck {
struct SymmetryVerifyingDataHandle
: public Dune::CommDataHandleIF<SymmetryVerifyingDataHandle,std::size_t>
{
bool contains(int dim, int codim) const
{
return codim == _codim;
}
bool fixedsize(int dim, int codim) const
{
return _fixed_size;
}
template<typename E>
std::size_t size(const E& e) const
{
return _writes_per_cell;
}
template<typename Buf, typename E>
void gather(Buf& buf, const E& e) const
{
for (std::size_t i = 0; i < _writes_per_cell; ++i)
buf.write(std::size_t(42));
_writes += _writes_per_cell;
}
template<typename Buf, typename E>
void scatter(Buf& buf, const E& e, std::size_t n) const
{
assert(_writes_per_cell == n);
for (std::size_t i = 0; i < _writes_per_cell; ++i)
{
std::size_t tmp = 0;
buf.read(tmp);
assert(tmp == 42);
}
_reads += _writes_per_cell;
}
SymmetryVerifyingDataHandle(int codim, bool fixed_size, std::size_t writes_per_cell)
: _codim(codim)
, _fixed_size(fixed_size)
, _writes_per_cell(writes_per_cell)
, _reads(0)
, _writes(0)
{}
const int _codim;
const bool _fixed_size;
const std::size_t _writes_per_cell;
mutable std::size_t _reads;
mutable std::size_t _writes;
};
template<int dim>
struct CodimLayout
{
bool contains(Dune::GeometryType gt) const
{
return gt.dim() == dim - _codim;
}
int _codim;
};
template<typename GV>
struct CommunicationTestDataHandle
: public Dune::CommDataHandleIF<CommunicationTestDataHandle<GV>,
typename GV::template Codim<0>::Geometry::GlobalCoordinate>
{
bool contains(int dim, int codim) const
{
return codim == _codim;
}
bool fixedsize(int dim, int codim) const
{
return true;
}
template<typename E>
std::size_t size(const E& e) const
{
return 1;
}
template<typename Buf, typename E>
void gather(Buf& buf, const E& e) const
{
assert(_allowed_writes.count(e.partitionType()) > 0);
auto center = e.geometry().center();
buf.write(e.geometry().center());
if (_gv.comm().rank() == 0)
std::cout << "Gathering from entity " << _mapper.index(e) << " at " << e.geometry().center() << std::endl;
++_writes[_mapper.index(e)];
center -= _coords[_mapper.index(e)];
assert(Dune::FloatCmp::eq(center.two_norm(),0.0));
}
template<typename Buf, typename E>
void scatter(Buf& buf, const E& e, std::size_t n) const
{
assert(_allowed_reads.count(e.partitionType()) > 0);
typename E::Geometry::GlobalCoordinate data;
buf.read(data);
++_reads[_mapper.index(e)];
auto center = e.geometry().center();
data -= e.geometry().center();
assert(Dune::FloatCmp::eq(data.two_norm(),0.0));
center -= _coords[_mapper.index(e)];
assert(Dune::FloatCmp::eq(center.two_norm(),0.0));
}
template<int cd, typename Check>
void verify(Dune::Codim<cd> codim, Check check)
{
assert(codim == _codim);
for (const auto& e : entities(_gv,codim))
{
if (_gv.comm().rank() == 0)
std::cout << "Entity of codim " << cd
<< " at " << e.geometry().center()
<< " with partition " << PartitionName(e.partitionType())
<< " and " << _writes[_mapper.index(e)] << " / " << _reads[_mapper.index(e)] << " writes / reads"
<< std::endl;
check(
e.partitionType(),
_allowed_writes.count(e.partitionType()) > 0,
_allowed_reads.count(e.partitionType()) > 0,
_writes[_mapper.index(e)],
_reads[_mapper.index(e)]
);
}
}
CommunicationTestDataHandle(GV gv, int codim, const std::unordered_set<Dune::PartitionType>& allowed_writes, const std::unordered_set<Dune::PartitionType>& allowed_reads, const std::vector<typename GV::template Codim<0>::Geometry::GlobalCoordinate>& coords)
: _gv(gv)
, _codim(codim)
, _mapper(gv,{_codim})
, _allowed_writes(allowed_writes)
, _allowed_reads(allowed_reads)
, _reads(_mapper.size(),0)
, _writes(_mapper.size(),0)
, _coords(coords)
{}
GV _gv;
const int _codim;
Dune::MultipleCodimMultipleGeomTypeMapper<GV,CodimLayout> _mapper;
const std::unordered_set<Dune::PartitionType> _allowed_writes;
const std::unordered_set<Dune::PartitionType> _allowed_reads;
mutable std::vector<std::size_t> _reads;
mutable std::vector<std::size_t> _writes;
const std::vector<typename GV::template Codim<0>::Geometry::GlobalCoordinate>& _coords;
};
template<typename GV, int cd>
void check_communication_correctness_do(GV gv, Codim<cd> codim)
{
if (gv.grid().comm().rank() == 0)
{
std::cout << "Checking codim " << cd << std::endl;
}
std::unordered_map<Dune::PartitionType,std::size_t> count;
Dune::MultipleCodimMultipleGeomTypeMapper<GV,CodimLayout> mapper(gv,{codim});
std::vector<
typename GV::template Codim<0>::Geometry::GlobalCoordinate
> coords(mapper.size());
// start by counting entities by partition type and storing entity positions
for (const auto& e : entities(gv,codim))
{
++count[e.partitionType()];
coords[mapper.index(e)] = e.geometry().center();
}
{
SymmetryVerifyingDataHandle dh_forward(cd,false,3);
gv.communicate(dh_forward,InteriorBorder_InteriorBorder_Interface,ForwardCommunication);
SymmetryVerifyingDataHandle dh_backward(cd,true,3);
gv.communicate(dh_backward,InteriorBorder_InteriorBorder_Interface,BackwardCommunication);
if (count[BorderEntity] > 0)
{
assert(dh_forward._writes == dh_forward._reads);
assert(dh_backward._writes == dh_backward._reads);
assert(dh_forward._writes == dh_backward._writes);
assert(dh_backward._writes == dh_backward._writes);
}
if (gv.grid().comm().size() == 2)
{
if (gv.comm().rank() == 0)
std::cout << "MPI size == 2, checking writes (" << (dh_forward._writes / 3)
<< ") against count of border entities (" << count[BorderEntity] << ")"
<< std::endl;
assert((dh_forward._writes / 3) == count[BorderEntity]);
}
}
{
SymmetryVerifyingDataHandle dh_forward(cd,true,7);
gv.communicate(dh_forward,All_All_Interface,ForwardCommunication);
SymmetryVerifyingDataHandle dh_backward(cd,false,7);
gv.communicate(dh_backward,All_All_Interface,BackwardCommunication);
if (count[BorderEntity] > 0)
{
assert(dh_forward._writes == dh_forward._reads);
assert(dh_backward._writes == dh_backward._reads);
assert(dh_forward._writes == dh_backward._writes);
assert(dh_backward._writes == dh_backward._writes);
}
}
using PTSet = std::unordered_set<PartitionType>;
{
PTSet writers({InteriorEntity,BorderEntity});
PTSet readers({InteriorEntity,BorderEntity,OverlapEntity,FrontEntity,GhostEntity});
CommunicationTestDataHandle<GV> dh(gv,codim,writers,readers,coords);
gv.communicate(dh,InteriorBorder_All_Interface,ForwardCommunication);
}
{
PTSet writers({InteriorEntity,BorderEntity,OverlapEntity,FrontEntity,GhostEntity});
PTSet readers({InteriorEntity,BorderEntity});
CommunicationTestDataHandle<GV> dh(gv,codim,writers,readers,coords);
gv.communicate(dh,InteriorBorder_All_Interface,BackwardCommunication);
}
{
PTSet writers({InteriorEntity,BorderEntity});
PTSet readers({InteriorEntity,BorderEntity});
CommunicationTestDataHandle<GV> dh(gv,codim,writers,readers,coords);
gv.communicate(dh,InteriorBorder_InteriorBorder_Interface,ForwardCommunication);
dh.verify(
codim,
[](PartitionType partition, bool write_allowed, bool read_allowed, std::size_t writes, std::size_t reads)
{
if (partition == BorderEntity)
{
assert(writes > 0);
assert(reads > 0);
assert(writes == reads);
}
else
{
assert(writes == 0);
assert(reads == 0);
}
});
}
}
// Need a forward declaration here
template<typename GV, int cd>
void check_communication_correctness_iter(GV gv, Codim<cd> codim);
// Statically iterate over all codimensions
template<typename GV, int cd>
void check_communication_correctness_iter(GV gv, Codim<cd> codim, std::true_type, std::true_type) {}
template<typename GV, int cd>
void check_communication_correctness_iter(GV gv, Codim<cd> codim, std::false_type, std::true_type) {}
template<typename GV, int cd>
void check_communication_correctness_iter(GV gv, Codim<cd> codim, std::true_type, std::false_type) {
check_communication_correctness_do(gv, codim);
check_communication_correctness_iter (gv, Codim<cd+1>());
}
template<typename GV, int cd>
void check_communication_correctness_iter(GV gv, Codim<cd> codim, std::false_type, std::false_type) {
check_communication_correctness_iter (gv, Codim<cd+1>());
}
template<typename GV, int cd>
void check_communication_correctness_iter(GV gv, Codim<cd> codim) {
check_communication_correctness_iter (gv, codim,
std::integral_constant<bool, Dune::Capabilities::hasEntity<typename GV::Grid, cd>::v>(),
std::integral_constant<bool, cd == GV::dimension + 1>());
}
// Start with codim 0
template<typename GV>
void check_communication_correctness(GV gv)
{
check_communication_correctness_iter (gv, Codim<0>());
}
} // namespace GridCheck
} // namespace Dune
#endif
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