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communicator.cpp
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communicator.cpp
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#define BOOST_TEST_MODULE FMI
#include <boost/test/unit_test.hpp>
#include <omp.h>
#include "../include/fmi.h"
BOOST_AUTO_TEST_SUITE(Communicator);
std::string comm_name = std::to_string(std::time(nullptr));
std::string config_path = "../../config/fmi_test.json";
BOOST_AUTO_TEST_CASE(sending_receiving) {
FMI::Comm::Data<int> d_single = 1;
FMI::Comm::Data<int> d_single_rcv;
FMI::Comm::Data<std::vector<int>> d_mult = {{1, 2, 3}};
FMI::Comm::Data<std::vector<int>> d_mult_rcv(3);
std::vector<std::unique_ptr<FMI::Communicator>> comms(2);
#pragma omp parallel num_threads(2)
{
int tid = omp_get_thread_num();
comms[tid] = std::make_unique<FMI::Communicator>(tid, 2, config_path, comm_name);
if (tid == 0) {
comms[tid]->send(d_single, 1);
comms[tid]->send(d_mult, 1);
} else {
comms[tid]->recv(d_single_rcv, 0);
comms[tid]->recv(d_mult_rcv, 0);
}
}
BOOST_CHECK_EQUAL(d_single, d_single_rcv);
BOOST_TEST(d_mult.get() == d_mult_rcv.get(), boost::test_tools::per_element());
}
BOOST_AUTO_TEST_CASE(bcast) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<int>> d(num_peers);
d[0] = 1;
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->bcast(d[peer_id], 0);
BOOST_CHECK_EQUAL(d[peer_id], 1);
}
BOOST_AUTO_TEST_CASE(scatter) {
constexpr int num_peers = 4;
FMI::Comm::Data<std::vector<int>> root_data{{1, 2, 3, 4}};
std::vector<FMI::Comm::Data<std::vector<int>>> d(num_peers, FMI::Comm::Data<std::vector<int>>(1));
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->scatter(root_data, d[peer_id], 0);
BOOST_CHECK_EQUAL(d[peer_id].get()[0], peer_id + 1);
}
BOOST_AUTO_TEST_CASE(gather) {
constexpr int num_peers = 4;
FMI::Comm::Data<std::vector<int>> root_data(num_peers);
std::vector<FMI::Comm::Data<std::vector<int>>> d(num_peers);
for (int i = 0; i < num_peers; i++) {
std::vector<int> data(1, i + 1);
d[i] = FMI::Comm::Data<std::vector<int>>(data);
}
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->gather(d[peer_id], root_data, 0);
std::vector<int> expected{{1,2,3,4}};
if (peer_id == 0) {
BOOST_TEST(root_data.get() == expected, boost::test_tools::per_element());
}
}
BOOST_AUTO_TEST_CASE(reduce) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<int>> data(num_peers);
FMI::Comm::Data<int> res;
for (int i = 0; i < num_peers; i++) {
data[i] = i + 1;
}
FMI::Utils::Function<int> f([] (auto a, auto b) {return a + b;}, true, true);
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->reduce(data[peer_id], res, 0, f);
if (peer_id == 0) {
BOOST_CHECK_EQUAL(res, 10);
}
}
BOOST_AUTO_TEST_CASE(reduce_vector) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<std::vector<int>>> data(num_peers);
FMI::Comm::Data<std::vector<int>> res(2);
for (int i = 0; i < num_peers; i++) {
data[i] = std::vector<int>{i + 1, 2 * (i + 1)};
}
FMI::Utils::Function<std::vector<int>> f([] (auto a, auto b) {
return std::vector<int>{a[0] + b[0], a[1] * b[1]};
}, true, true);
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->reduce(data[peer_id], res, 0, f);
if (peer_id == 0) {
std::vector<int> expected{1 + 2 + 3 + 4, 2 * 4 * 6 * 8};
BOOST_TEST(res.get() == expected, boost::test_tools::per_element());
}
}
BOOST_AUTO_TEST_CASE(allreduce) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<int>> data(num_peers);
std::vector<FMI::Comm::Data<int>> res(num_peers);
for (int i = 0; i < num_peers; i++) {
data[i] = i + 1;
}
FMI::Utils::Function<int> f([] (int a, int b) {return a + b;}, true, true);
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->allreduce(data[peer_id], res[peer_id], f);
BOOST_CHECK_EQUAL(res[peer_id], 10);
}
BOOST_AUTO_TEST_CASE(allreduce_vector) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<std::vector<int>>> data(num_peers);
std::vector<FMI::Comm::Data<std::vector<int>>> res(num_peers);
for (int i = 0; i < num_peers; i++) {
data[i] = std::vector<int>{i + 1, 2 * (i + 1), i + 1};
res[i] = std::vector<int>(3);
}
FMI::Utils::Function<std::vector<int>> f([] (auto a, auto b) {
return std::vector<int>{a[0] + b[0], a[1] * b[1], std::max(a[2], b[2])};
}, true, true);
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->allreduce(data[peer_id], res[peer_id], f);
std::vector<int> expected{1 + 2 + 3 + 4, 2 * 4 * 6 * 8, 4};
BOOST_TEST(res[peer_id].get() == expected, boost::test_tools::per_element());
}
BOOST_AUTO_TEST_CASE(scan) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<int>> data(num_peers);
std::vector<FMI::Comm::Data<int>> res(num_peers);
for (int i = 0; i < num_peers; i++) {
data[i] = i + 1;
}
std::vector<std::unique_ptr<FMI::Communicator>> comms(num_peers);
FMI::Utils::Function<int> f([] (int a, int b) {return a + b;}, true, true);
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->scan(data[peer_id], res[peer_id], f);
int prefix_sum = 0;
for (int i = 0; i <= peer_id; i++) {
prefix_sum += i + 1;
}
BOOST_CHECK_EQUAL(res[peer_id], prefix_sum);
}
BOOST_AUTO_TEST_CASE(scan_vector) {
constexpr int num_peers = 4;
std::vector<FMI::Comm::Data<std::vector<int>>> data(num_peers);
std::vector<FMI::Comm::Data<std::vector<int>>> res(num_peers);
for (int i = 0; i < num_peers; i++) {
data[i] = std::vector<int>{i + 1, 2 * (i + 1), i + 1};
res[i] = std::vector<int>(3);
}
FMI::Utils::Function<std::vector<int>> f([] (auto a, auto b) {
return std::vector<int>{a[0] + b[0], a[1] * b[1], std::max(a[2], b[2])};
}, true, true);
int peer_id = 0;
for (int i = 1; i < num_peers; i ++) {
int pid = fork();
if (pid == 0) {
peer_id = i;
break;
}
}
auto ch = std::make_unique<FMI::Communicator>(peer_id, num_peers, config_path, comm_name);
ch->scan(data[peer_id], res[peer_id], f);
int prefix_sum = 0;
int product = 1;
for (int i = 0; i <= peer_id; i++) {
prefix_sum += i + 1;
product *= 2 * (i + 1);
}
BOOST_CHECK_EQUAL(res[peer_id].get()[0], prefix_sum);
BOOST_CHECK_EQUAL(res[peer_id].get()[1], product);
BOOST_CHECK_EQUAL(res[peer_id].get()[2], peer_id + 1);
}
BOOST_AUTO_TEST_SUITE_END();