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Fri, May 17, 18:04

facet_synchronizer.cc
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/**
* @file facet_synchronizer.cc
*
* @author Marco Vocialta <marco.vocialta@epfl.ch>
*
*
* @brief Facet synchronizer for parallel simulations with cohesive elments
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
#include "facet_synchronizer.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
FacetSynchronizer::FacetSynchronizer(Mesh & mesh,
SynchronizerID id,
MemoryID memory_id) :
DistributedSynchronizer(mesh, id, memory_id) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
FacetSynchronizer * FacetSynchronizer::
createFacetSynchronizer(DistributedSynchronizer & distributed_synchronizer,
Mesh & mesh,
SynchronizerID id,
MemoryID memory_id) {
AKANTU_DEBUG_IN();
FacetSynchronizer & f_synchronizer = *(new FacetSynchronizer(mesh, id, memory_id));
f_synchronizer.setupFacetSynchronization(distributed_synchronizer);
AKANTU_DEBUG_OUT();
return &f_synchronizer;
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::updateDistributedSynchronizer(DistributedSynchronizer & distributed_synchronizer,
DataAccessor & data_accessor,
const Mesh & mesh_cohesive) {
AKANTU_DEBUG_IN();
Array<Element> * distrib_send_element = distributed_synchronizer.send_element;
Array<Element> * distrib_recv_element = distributed_synchronizer.recv_element;
updateElementList(distrib_send_element, send_element, mesh_cohesive);
updateElementList(distrib_recv_element, recv_element, mesh_cohesive);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::updateElementList(Array<Element> * elements,
const Array<Element> * facets,
const Mesh & mesh_cohesive) {
AKANTU_DEBUG_IN();
ElementType current_element_type = _not_defined;
GhostType current_ghost_type = _casper;
UInt old_nb_cohesive_elements = 0;
const Array< std::vector<Element> > * element_to_facet = NULL;
for (UInt p = 0; p < nb_proc; ++p) {
const Array<Element> & fa = facets[p];
Array<Element> & el = elements[p];
Array<Element>::const_iterator<Element> it = fa.begin();
Array<Element>::const_iterator<Element> end = fa.end();
for (; it != end; ++it) {
const Element & facet = *it;
if(facet.type != current_element_type || facet.ghost_type != current_ghost_type) {
current_element_type = facet.type;
current_ghost_type = facet.ghost_type;
ElementType current_coh_element_type
= FEEngine::getCohesiveElementType(current_element_type);
/// compute old number of cohesive elements
old_nb_cohesive_elements = mesh_cohesive.getNbElement(current_coh_element_type,
current_ghost_type);
old_nb_cohesive_elements -= mesh.getData<UInt>("facet_to_double",
current_element_type,
current_ghost_type).getSize();
element_to_facet = & mesh.getData<std::vector<Element> >("element_to_subelement",
current_element_type,
current_ghost_type);
}
const Element & cohesive_element = (*element_to_facet)(facet.element)[1];
if (cohesive_element.kind == _ek_cohesive &&
cohesive_element.element >= old_nb_cohesive_elements)
el.push_back(cohesive_element);
}
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::setupFacetSynchronization(DistributedSynchronizer & distributed_synchronizer) {
AKANTU_DEBUG_IN();
Array<Element> * distrib_send_element = distributed_synchronizer.send_element;
Array<Element> * distrib_recv_element = distributed_synchronizer.recv_element;
/// build rank to facet correspondance
ElementTypeMapArray<UInt> rank_to_facet("rank_to_facet", id);
initRankToFacet(rank_to_facet);
buildRankToFacet(rank_to_facet, distrib_recv_element);
/// generate temp_send/recv element arrays with their connectivity
Array<ElementTypeMapArray<UInt> *> temp_send_element(nb_proc);
Array<ElementTypeMapArray<UInt> *> temp_recv_element(nb_proc);
Array<ElementTypeMapArray<UInt> *> send_connectivity(nb_proc);
Array<ElementTypeMapArray<UInt> *> recv_connectivity(nb_proc);
UInt spatial_dimension = mesh.getSpatialDimension();
for (UInt p = 0; p < nb_proc; ++p) {
if (p == rank) continue;
std::stringstream sstr; sstr << p;
temp_send_element(p) =
new ElementTypeMapArray<UInt>("temp_send_element_proc_"+sstr.str(), id);
mesh.initElementTypeMapArray(*temp_send_element(p), 1, spatial_dimension - 1);
temp_recv_element(p) =
new ElementTypeMapArray<UInt>("temp_recv_element_proc_"+sstr.str(), id);
mesh.initElementTypeMapArray(*temp_recv_element(p), 1, spatial_dimension - 1);
send_connectivity(p) =
new ElementTypeMapArray<UInt>("send_connectivity_proc_"+sstr.str(), id);
mesh.initElementTypeMapArray(*send_connectivity(p), 1, spatial_dimension - 1, true);
recv_connectivity(p) =
new ElementTypeMapArray<UInt>("recv_connectivity_proc_"+sstr.str(), id);
mesh.initElementTypeMapArray(*recv_connectivity(p), 1, spatial_dimension - 1, true);
}
/// build global connectivity arrays
getFacetGlobalConnectivity<_not_ghost>(distributed_synchronizer,
rank_to_facet,
distrib_send_element,
send_connectivity,
temp_send_element);
getFacetGlobalConnectivity<_ghost>(distributed_synchronizer,
rank_to_facet,
distrib_recv_element,
recv_connectivity,
temp_recv_element);
/// build send/recv facet arrays
buildSendElementList(send_connectivity, recv_connectivity, temp_send_element);
buildRecvElementList(temp_recv_element);
#ifndef AKANTU_NDEBUG
/// count recv facets for each processor
Array<UInt> nb_facets_recv(nb_proc);
nb_facets_recv.clear();
Mesh::type_iterator first = mesh.firstType(spatial_dimension - 1, _ghost);
Mesh::type_iterator last = mesh.lastType(spatial_dimension - 1, _ghost);
for (; first != last; ++first) {
const Array<UInt> & r_to_f = rank_to_facet(*first, _ghost);
UInt nb_facet = r_to_f.getSize();
for (UInt f = 0; f < nb_facet; ++f) {
UInt proc = r_to_f(f);
if (proc != rank)
++nb_facets_recv(proc);
}
}
for (UInt p = 0; p < nb_proc; ++p) {
AKANTU_DEBUG_ASSERT(nb_facets_recv(p) == recv_element[p].getSize(),
"Wrong number of recv facets");
}
#endif
for (UInt p = 0; p < nb_proc; ++p) {
delete temp_send_element(p);
delete temp_recv_element(p);
delete send_connectivity(p);
delete recv_connectivity(p);
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::buildSendElementList(const Array<ElementTypeMapArray<UInt> *> & send_connectivity,
const Array<ElementTypeMapArray<UInt> *> & recv_connectivity,
const Array<ElementTypeMapArray<UInt> *> & temp_send_element) {
AKANTU_DEBUG_IN();
StaticCommunicator & comm = StaticCommunicator::getStaticCommunicator();
UInt spatial_dimension = mesh.getSpatialDimension();
GhostType ghost_type = _ghost;
Mesh::type_iterator first = mesh.firstType(spatial_dimension - 1, ghost_type);
Mesh::type_iterator last = mesh.lastType(spatial_dimension - 1, ghost_type);
/// do every communication by element type
for (; first != last; ++first) {
ElementType facet_type = *first;
std::vector<CommunicationRequest *> send_requests;
UInt * send_size = new UInt[nb_proc];
/// send asynchronous data
for (UInt p = 0; p < nb_proc; ++p) {
if (p == rank) continue;
const Array<UInt> & recv_conn = (*recv_connectivity(p))(facet_type, _ghost);
send_size[p] = recv_conn.getSize();
/// send connectivity size
send_requests.push_back(comm.asyncSend(send_size + p,
1,
p,
Tag::genTag(rank, p, 0)));
/// send connectivity data
send_requests.push_back(comm.asyncSend(recv_conn.storage(),
recv_conn.getSize() *
recv_conn.getNbComponent(),
p,
Tag::genTag(rank, p, 1)));
}
UInt * recv_size = new UInt[nb_proc];
UInt nb_nodes_per_facet = Mesh::getNbNodesPerElement(facet_type);
/// receive data
for (UInt p = 0; p < nb_proc; ++p) {
if (p == rank) continue;
/// receive connectivity size
comm.receive(recv_size + p, 1, p, Tag::genTag(p, rank, 0));
Array<UInt> conn_to_match(recv_size[p], nb_nodes_per_facet);
/// receive connectivity
comm.receive(conn_to_match.storage(),
conn_to_match.getSize() * conn_to_match.getNbComponent(),
p,
Tag::genTag(p, rank, 1));
const Array<UInt> & send_conn =
(*send_connectivity(p))(facet_type, _not_ghost);
const Array<UInt> & list = (*temp_send_element(p))(facet_type, _not_ghost);
UInt nb_local_facets = send_conn.getSize();
AKANTU_DEBUG_ASSERT(nb_local_facets == list.getSize(),
"connectivity and facet list have different sizes");
Array<bool> checked(nb_local_facets);
checked.clear();
Element facet(facet_type, 0, _not_ghost, _ek_regular);
Array<UInt>::iterator<Vector<UInt> > c_to_match_it =
conn_to_match.begin(nb_nodes_per_facet);
Array<UInt>::iterator<Vector<UInt> > c_to_match_end =
conn_to_match.end(nb_nodes_per_facet);
/// for every sent facet of other processors, find the
/// corresponding one in the local send connectivity data in
/// order to build the send_element arrays
for (; c_to_match_it != c_to_match_end; ++c_to_match_it) {
Array<UInt>::const_iterator<Vector<UInt> > c_local_it =
send_conn.begin(nb_nodes_per_facet);
Array<UInt>::const_iterator<Vector<UInt> > c_local_end =
send_conn.end(nb_nodes_per_facet);
for (UInt f = 0; f < nb_local_facets; ++f, ++c_local_it) {
if (checked(f)) continue;
if ( (*c_to_match_it) == (*c_local_it) ) {
checked(f) = true;
facet.element = list(f);
send_element[p].push_back(facet);
break;
}
}
AKANTU_DEBUG_ASSERT(c_local_it != c_local_end, "facet not found");
}
}
/// wait for all communications to be done and free the
/// communication request array
comm.waitAll(send_requests);
comm.freeCommunicationRequest(send_requests);
delete [] send_size;
delete [] recv_size;
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::buildRecvElementList(const Array<ElementTypeMapArray<UInt> *> & temp_recv_element) {
AKANTU_DEBUG_IN();
UInt spatial_dimension = mesh.getSpatialDimension();
for (UInt p = 0; p < nb_proc; ++p) {
if (p == rank) continue;
GhostType ghost_type = _ghost;
Mesh::type_iterator first = mesh.firstType(spatial_dimension - 1, ghost_type);
Mesh::type_iterator last = mesh.lastType(spatial_dimension - 1, ghost_type);
for (; first != last; ++first) {
ElementType facet_type = *first;
const Array<UInt> & list = (*temp_recv_element(p))(facet_type, ghost_type);
UInt nb_local_facets = list.getSize();
Element facet(facet_type, 0, ghost_type, _ek_regular);
for (UInt f = 0; f < nb_local_facets; ++f) {
facet.element = list(f);
recv_element[p].push_back(facet);
}
}
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::initRankToFacet(ElementTypeMapArray<UInt> & rank_to_facet) {
AKANTU_DEBUG_IN();
UInt spatial_dimension = mesh.getSpatialDimension();
mesh.initElementTypeMapArray(rank_to_facet, 1, spatial_dimension - 1);
GhostType ghost_type = _ghost;
Mesh::type_iterator first = mesh.firstType(spatial_dimension - 1, ghost_type);
Mesh::type_iterator last = mesh.lastType(spatial_dimension - 1, ghost_type);
for (; first != last; ++first) {
ElementType type = *first;
UInt nb_facet = mesh.getNbElement(type, ghost_type);
Array<UInt> & rank_to_f = rank_to_facet(type, ghost_type);
rank_to_f.resize(nb_facet);
for (UInt f = 0; f < nb_facet; ++f)
rank_to_f(f) = rank;
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void FacetSynchronizer::buildRankToFacet(ElementTypeMapArray<UInt> & rank_to_facet,
const Array<Element> * elements) {
AKANTU_DEBUG_IN();
for (UInt p = 0; p < nb_proc; ++p) {
if (p == rank) continue;
const Array<Element> & elem = elements[p];
UInt nb_element = elem.getSize();
for (UInt el = 0; el < nb_element; ++el) {
ElementType type = elem(el).type;
GhostType gt = elem(el).ghost_type;
UInt el_index = elem(el).element;
const Array<Element> & facet_to_element
= mesh.getSubelementToElement(type, gt);
UInt nb_facets_per_element = Mesh::getNbFacetsPerElement(type);
ElementType facet_type = Mesh::getFacetType(type);
for (UInt f = 0; f < nb_facets_per_element; ++f) {
const Element & facet = facet_to_element(el_index, f);
if (facet == ElementNull) continue;
UInt facet_index = facet.element;
GhostType facet_gt = facet.ghost_type;
if (facet_gt == _not_ghost) continue;
Array<UInt> & t_to_f = rank_to_facet(facet_type, facet_gt);
if ((p < t_to_f(facet_index)) || (t_to_f(facet_index) == rank))
t_to_f(facet_index) = p;
}
}
}
AKANTU_DEBUG_OUT();
}
__END_AKANTU__

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