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test_communicator.cc
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Wed, Nov 27, 02:40

test_communicator.cc
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/**
* Copyright (©) 2019-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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 <aka_iterators.hh>
#include <communication_tag.hh>
#include <communicator.hh>
/* -------------------------------------------------------------------------- */
#include <gtest/gtest.h>
#include <random>
/* -------------------------------------------------------------------------- */
using namespace akantu;
TEST(Communicator, Bcast) {
auto r = 0xdeadbeef;
auto & c = Communicator::getStaticCommunicator();
c.broadcast(r);
EXPECT_EQ(r, 0xdeadbeef);
}
TEST(Communicator, ReceiveAny) {
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> dis(1, 10);
std::vector<CommunicationRequest> reqs;
auto & c = Communicator::getStaticCommunicator();
auto && rank = c.whoAmI();
auto && size = c.getNbProc();
for (auto n [[gnu::unused]] : arange(100)) {
AKANTU_DEBUG_INFO("ROUND " << n);
auto tag = Tag::genTag(0, 1, 0);
if (rank == 0) {
std::vector<int> sends(size - 1);
for (auto & s : sends) {
s = dis(gen);
}
c.broadcast(sends);
AKANTU_DEBUG_INFO("Messages " << [&]() {
std::string msgs;
for (auto s : enumerate(sends)) {
if (std::get<0>(s) != 0)
msgs += ", ";
msgs += std::to_string(std::get<0>(s) + 1) + ": " +
std::to_string(std::get<1>(s));
}
return msgs;
}());
int nb_recvs = 0;
for (auto && data : enumerate(sends)) {
auto & send = std::get<1>(data);
int p = std::get<0>(data) + 1;
if (send > 5) {
reqs.push_back(
c.asyncSend(send, p, tag, CommunicationMode::_synchronous));
}
if (p <= send) {
++nb_recvs;
}
}
c.receiveAnyNumber<int>(
reqs,
[&](auto && proc, auto && msg) {
EXPECT_EQ(msg[0], sends[proc - 1] + 100 * proc);
EXPECT_LE(proc, sends[proc - 1]);
--nb_recvs;
},
tag);
EXPECT_EQ(nb_recvs, 0);
} else {
std::vector<int> recv(size - 1);
c.broadcast(recv);
AKANTU_DEBUG_INFO("Messages " << [&]() {
std::string msgs;
for (auto s : enumerate(recv)) {
if (std::get<0>(s) != 0)
msgs += ", ";
msgs += std::to_string(std::get<0>(s) + 1) + ": " +
std::to_string(std::get<1>(s));
}
return msgs;
}());
auto send = recv[rank - 1] + 100 * rank;
if (rank <= recv[rank - 1]) {
reqs.push_back(
c.asyncSend(send, 0, tag, CommunicationMode::_synchronous));
}
bool has_recv = false;
c.receiveAnyNumber<int>(
reqs,
[&](auto && proc, auto && msg) {
EXPECT_EQ(msg[0], recv[rank - 1]);
EXPECT_EQ(proc, 0);
has_recv = true;
},
tag);
bool should_recv = (recv[rank - 1] > 5);
EXPECT_EQ(has_recv, should_recv);
}
reqs.clear();
}
}

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