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communications_tmpl.hh
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/**
* @file communications_tmpl.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Fri Dec 02 2016
* @date last modification: Fri Jul 24 2020
*
* @brief Implementation of Communications
*
*
* @section LICENSE
*
* Copyright (©) 2016-2021 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
//#include "communications.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_COMMUNICATIONS_TMPL_HH_
#define AKANTU_COMMUNICATIONS_TMPL_HH_
namespace akantu {
/* -------------------------------------------------------------------------- */
template <class Entity>
Communications<Entity>::Communications(const Communicator & communicator)
: communicator(communicator) {}
/* -------------------------------------------------------------------------- */
template <class Entity>
Communications<Entity>::Communications(const Communications & other)
: communicator(other.communicator) {
for (auto sr : iterate_send_recv) {
for (const auto & scheme_pair : other.iterateSchemes(sr)) {
auto proc = scheme_pair.first;
auto & other_scheme = scheme_pair.second;
auto & scheme = this->createScheme(proc, sr);
scheme.copy(other_scheme);
}
}
this->invalidateSizes();
}
/* -------------------------------------------------------------------------- */
template <class Entity> void Communications<Entity>::swapSendRecv() {
std::swap(schemes[_send], schemes[_recv]);
}
/* -------------------------------------------------------------------------- */
template <class Entity> class Communications<Entity>::iterator {
using communication_iterator =
typename std::map<Int, Communication>::iterator;
public:
iterator() : communications(nullptr) {}
iterator(scheme_iterator scheme_it, communication_iterator comm_it,
Communications<Entity> & communications,
const SynchronizationTag & tag)
: scheme_it(scheme_it), comm_it(comm_it), communications(&communications),
tag(tag) {}
iterator(const iterator & other) = default;
iterator(iterator && other) noexcept = default;
iterator & operator=(const iterator & other) = default;
iterator & operator=(iterator && other) noexcept = default;
iterator & operator++() {
++scheme_it;
++comm_it;
return *this;
}
CommunicationDescriptor<Entity> operator*() {
AKANTU_DEBUG_ASSERT(
scheme_it->first == comm_it->first,
"The two iterators are not in phase, something wrong"
<< " happened, time to take out your favorite debugger ("
<< scheme_it->first << " != " << comm_it->first << ")");
return CommunicationDescriptor<Entity>(comm_it->second, scheme_it->second,
*communications, tag,
scheme_it->first);
}
bool operator==(const iterator & other) const {
return scheme_it == other.scheme_it && comm_it == other.comm_it;
}
bool operator!=(const iterator & other) const {
return scheme_it != other.scheme_it || comm_it != other.comm_it;
}
private:
scheme_iterator scheme_it;
communication_iterator comm_it;
Communications<Entity> * communications;
SynchronizationTag tag;
};
/* -------------------------------------------------------------------------- */
template <class Entity> class Communications<Entity>::tag_iterator {
using internal_iterator = std::map<SynchronizationTag, Int>::const_iterator;
public:
tag_iterator(const internal_iterator & it) : it(it) {}
tag_iterator & operator++() {
++it;
return *this;
}
SynchronizationTag operator*() { return it->first; }
bool operator==(const tag_iterator & other) const { return it == other.it; }
bool operator!=(const tag_iterator & other) const { return it != other.it; }
private:
internal_iterator it;
};
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::CommunicationPerProcs &
Communications<Entity>::getCommunications(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) {
auto comm_it = this->communications[sr].find(tag);
if (comm_it == this->communications[sr].end()) {
AKANTU_CUSTOM_EXCEPTION_INFO(
debug::CommunicationException(),
"No known communications for the tag: " << tag);
}
return comm_it->second;
}
/* ---------------------------------------------------------------------- */
template <class Entity>
Int Communications<Entity>::getPending(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) const {
const auto & pending = pending_communications[sr];
auto it = pending.find(tag);
if (it == pending.end()) {
return 0;
}
return it->second;
}
/* -------------------------------------------------------------------------- */
template <class Entity>
bool Communications<Entity>::hasPending(
const SynchronizationTag & tag, const CommunicationSendRecv & sr) const {
return this->hasCommunication(tag) && (this->getPending(tag, sr) != 0);
}
/* ---------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::iterator
Communications<Entity>::begin(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) {
auto & comms = this->getCommunications(tag, sr);
return iterator(this->schemes[sr].begin(), comms.begin(), *this, tag);
}
template <class Entity>
typename Communications<Entity>::iterator
Communications<Entity>::end(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) {
auto & comms = this->getCommunications(tag, sr);
return iterator(this->schemes[sr].end(), comms.end(), *this, tag);
}
/* ---------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::iterator
Communications<Entity>::waitAny(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) {
auto & comms = this->getCommunications(tag, sr);
auto it = comms.begin();
auto end = comms.end();
std::vector<CommunicationRequest> requests;
for (; it != end; ++it) {
auto & request = it->second.request();
if (!request.isFreed()) {
requests.push_back(request);
}
}
auto req_id = Communicator::waitAny(requests);
if (req_id != -1) {
auto & request = requests[req_id];
auto proc = sr == _recv ? request.getSource() : request.getDestination();
return iterator(this->schemes[sr].find(proc), comms.find(proc), *this, tag);
}
return this->end(tag, sr);
}
/* ---------------------------------------------------------------------- */
template <class Entity>
void Communications<Entity>::waitAll(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) {
auto & comms = this->getCommunications(tag, sr);
auto it = comms.begin();
auto end = comms.end();
std::vector<CommunicationRequest> requests;
for (; it != end; ++it) {
requests.push_back(it->second.request());
}
Communicator::waitAll(requests);
}
template <class Entity>
void Communications<Entity>::incrementPending(
const SynchronizationTag & tag, const CommunicationSendRecv & sr) {
++(pending_communications[sr][tag]);
}
template <class Entity>
void Communications<Entity>::decrementPending(
const SynchronizationTag & tag, const CommunicationSendRecv & sr) {
--(pending_communications[sr][tag]);
}
template <class Entity>
void Communications<Entity>::freeRequests(const SynchronizationTag & tag,
const CommunicationSendRecv & sr) {
auto it = this->begin(tag, sr);
auto end = this->end(tag, sr);
for (; it != end; ++it) {
(*it).freeRequest();
}
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::Scheme &
Communications<Entity>::createScheme(Idx proc,
const CommunicationSendRecv & sr) {
// scheme_iterator it = schemes[sr].find(proc);
// if (it != schemes[sr].end()) {
// AKANTU_CUSTOM_EXCEPTION_INFO(debug::CommunicationException(),
// "Communication scheme("
// << sr
// << ") already created for proc: " <<
// proc);
// }
return schemes[sr][proc];
}
template <class Entity>
void Communications<Entity>::resetSchemes(const CommunicationSendRecv & sr) {
auto it = this->schemes[sr].begin();
auto end = this->schemes[sr].end();
for (; it != end; ++it) {
it->second.resize(0);
}
}
/* -------------------------------------------------------------------------- */
template <class Entity>
void Communications<Entity>::setCommunicationSize(
const SynchronizationTag & tag, Idx proc, Idx size,
const CommunicationSendRecv & sr) {
// accessor that fails if it does not exists
comm_size_computed[tag] = true; // TODO: need perhaps to be split based on sr
auto & comms = this->communications[sr];
auto & comms_per_tag = comms.at(tag);
comms_per_tag.at(proc).resize(size);
}
/* -------------------------------------------------------------------------- */
template <class Entity>
void Communications<Entity>::initializeCommunications(
const SynchronizationTag & tag) {
for (auto t : send_recv_t{}) {
pending_communications[t].insert(std::make_pair(tag, 0));
auto & comms = this->communications[t];
auto & comms_per_tag =
comms.insert(std::make_pair(tag, CommunicationPerProcs()))
.first->second;
for (const auto & pair : this->schemes[t]) {
comms_per_tag.emplace(std::piecewise_construct,
std::forward_as_tuple(pair.first),
std::forward_as_tuple(t));
}
}
comm_counter.insert(std::make_pair(tag, 0));
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::tag_iterator
Communications<Entity>::begin_tag() {
return tag_iterator(comm_counter.begin());
}
template <class Entity>
typename Communications<Entity>::tag_iterator
Communications<Entity>::end_tag() {
return tag_iterator(comm_counter.end());
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::scheme_iterator
Communications<Entity>::begin_scheme(const CommunicationSendRecv & sr) {
return this->schemes[sr].begin();
}
template <class Entity>
typename Communications<Entity>::scheme_iterator
Communications<Entity>::end_scheme(const CommunicationSendRecv & sr) {
return this->schemes[sr].end();
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::const_scheme_iterator
Communications<Entity>::begin_scheme(const CommunicationSendRecv & sr) const {
return this->schemes[sr].begin();
}
template <class Entity>
typename Communications<Entity>::const_scheme_iterator
Communications<Entity>::end_scheme(const CommunicationSendRecv & sr) const {
return this->schemes[sr].end();
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::scheme_iterator
Communications<Entity>::begin_send_scheme() {
return this->begin_scheme(_send);
}
template <class Entity>
typename Communications<Entity>::scheme_iterator
Communications<Entity>::end_send_scheme() {
return this->end_scheme(_send);
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::const_scheme_iterator
Communications<Entity>::begin_send_scheme() const {
return this->begin_scheme(_send);
}
template <class Entity>
typename Communications<Entity>::const_scheme_iterator
Communications<Entity>::end_send_scheme() const {
return this->end_scheme(_send);
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::scheme_iterator
Communications<Entity>::begin_recv_scheme() {
return this->begin_scheme(_recv);
}
template <class Entity>
typename Communications<Entity>::scheme_iterator
Communications<Entity>::end_recv_scheme() {
return this->end_scheme(_recv);
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::const_scheme_iterator
Communications<Entity>::begin_recv_scheme() const {
return this->begin_scheme(_recv);
}
template <class Entity>
typename Communications<Entity>::const_scheme_iterator
Communications<Entity>::end_recv_scheme() const {
return this->end_scheme(_recv);
}
/* ------------------------------------------------------------------------ */
template <class Entity>
bool Communications<Entity>::hasCommunication(
const SynchronizationTag & tag) const {
return (communications[_send].find(tag) != communications[_send].end());
}
template <class Entity>
void Communications<Entity>::incrementCounter(const SynchronizationTag & tag) {
auto it = comm_counter.find(tag);
if (it == comm_counter.end()) {
AKANTU_CUSTOM_EXCEPTION_INFO(
debug::CommunicationException(),
"No counter initialized in communications for the tags: " << tag);
}
++(it->second);
}
template <class Entity>
Int Communications<Entity>::getCounter(const SynchronizationTag & tag) const {
auto it = comm_counter.find(tag);
if (it == comm_counter.end()) {
AKANTU_CUSTOM_EXCEPTION_INFO(
debug::CommunicationException(),
"No counter initialized in communications for the tags: " << tag);
}
return it->second;
}
template <class Entity>
bool Communications<Entity>::hasCommunicationSize(
const SynchronizationTag & tag) const {
auto it = comm_size_computed.find(tag);
if (it == comm_size_computed.end()) {
return false;
}
return it->second;
}
template <class Entity> void Communications<Entity>::invalidateSizes() {
for (auto && pair : comm_size_computed) {
pair.second = false;
}
}
template <class Entity>
bool Communications<Entity>::hasPendingRecv(
const SynchronizationTag & tag) const {
return this->hasPending(tag, _recv);
}
template <class Entity>
bool Communications<Entity>::hasPendingSend(
const SynchronizationTag & tag) const {
return this->hasPending(tag, _send);
}
template <class Entity>
const auto & Communications<Entity>::getCommunicator() const {
return communicator;
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::iterator
Communications<Entity>::waitAnyRecv(const SynchronizationTag & tag) {
return this->waitAny(tag, _recv);
}
template <class Entity>
typename Communications<Entity>::iterator
Communications<Entity>::waitAnySend(const SynchronizationTag & tag) {
return this->waitAny(tag, _send);
}
template <class Entity>
void Communications<Entity>::waitAllRecv(const SynchronizationTag & tag) {
this->waitAll(tag, _recv);
}
template <class Entity>
void Communications<Entity>::waitAllSend(const SynchronizationTag & tag) {
this->waitAll(tag, _send);
}
template <class Entity>
void Communications<Entity>::freeSendRequests(const SynchronizationTag & tag) {
this->freeRequests(tag, _send);
}
template <class Entity>
void Communications<Entity>::freeRecvRequests(const SynchronizationTag & tag) {
this->freeRequests(tag, _recv);
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::Scheme &
Communications<Entity>::createSendScheme(Idx proc) {
return createScheme(proc, _send);
}
template <class Entity>
typename Communications<Entity>::Scheme &
Communications<Entity>::createRecvScheme(Idx proc) {
return createScheme(proc, _recv);
}
/* -------------------------------------------------------------------------- */
template <class Entity> void Communications<Entity>::resetSchemes() {
resetSchemes(_send);
resetSchemes(_recv);
}
/* -------------------------------------------------------------------------- */
template <class Entity>
typename Communications<Entity>::Scheme &
Communications<Entity>::getScheme(Idx proc, const CommunicationSendRecv & sr) {
return this->schemes[sr].find(proc)->second;
}
/* -------------------------------------------------------------------------- */
template <class Entity>
const typename Communications<Entity>::Scheme &
Communications<Entity>::getScheme(Idx proc,
const CommunicationSendRecv & sr) const {
return this->schemes[sr].find(proc)->second;
}
/* -------------------------------------------------------------------------- */
template <class Entity>
void Communications<Entity>::setSendCommunicationSize(
const SynchronizationTag & tag, Idx proc, Int size) {
this->setCommunicationSize(tag, proc, size, _send);
}
template <class Entity>
void Communications<Entity>::setRecvCommunicationSize(
const SynchronizationTag & tag, Idx proc, Int size) {
this->setCommunicationSize(tag, proc, size, _recv);
}
} // namespace akantu
#endif /* AKANTU_COMMUNICATIONS_TMPL_HH_ */
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