113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
/*!
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* Copyright 2022 XGBoost contributors
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*/
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#include <dmlc/parameter.h>
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#include <gtest/gtest.h>
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#include <thread>
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#include "../../../src/collective/in_memory_communicator.h"
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namespace xgboost {
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namespace collective {
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class InMemoryCommunicatorTest : public ::testing::Test {
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public:
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static void VerifyAllreduce(int rank) {
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InMemoryCommunicator comm{kWorldSize, rank};
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int buffer[] = {1, 2, 3, 4, 5};
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comm.AllReduce(buffer, sizeof(buffer) / sizeof(buffer[0]), DataType::kInt32, Operation::kSum);
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int expected[] = {3, 6, 9, 12, 15};
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for (auto i = 0; i < 5; i++) {
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EXPECT_EQ(buffer[i], expected[i]);
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}
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}
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static void VerifyBroadcast(int rank) {
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InMemoryCommunicator comm{kWorldSize, rank};
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if (rank == 0) {
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std::string buffer{"hello"};
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comm.Broadcast(&buffer[0], buffer.size(), 0);
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EXPECT_EQ(buffer, "hello");
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} else {
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std::string buffer{" "};
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comm.Broadcast(&buffer[0], buffer.size(), 0);
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EXPECT_EQ(buffer, "hello");
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}
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}
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protected:
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static int const kWorldSize{3};
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};
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TEST(InMemoryCommunicatorSimpleTest, ThrowOnWorldSizeTooSmall) {
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auto construct = []() { InMemoryCommunicator comm{0, 0}; };
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EXPECT_THROW(construct(), dmlc::Error);
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}
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TEST(InMemoryCommunicatorSimpleTest, ThrowOnRankTooSmall) {
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auto construct = []() { InMemoryCommunicator comm{1, -1}; };
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EXPECT_THROW(construct(), dmlc::Error);
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}
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TEST(InMemoryCommunicatorSimpleTest, ThrowOnRankTooBig) {
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auto construct = []() { InMemoryCommunicator comm{1, 1}; };
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EXPECT_THROW(construct(), dmlc::Error);
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}
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TEST(InMemoryCommunicatorSimpleTest, ThrowOnWorldSizeNotInteger) {
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auto construct = []() {
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Json config{JsonObject()};
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config["in_memory_world_size"] = std::string("1");
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config["in_memory_rank"] = Integer(0);
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auto *comm = InMemoryCommunicator::Create(config);
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delete comm;
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};
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EXPECT_THROW(construct(), dmlc::Error);
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}
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TEST(InMemoryCommunicatorSimpleTest, ThrowOnRankNotInteger) {
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auto construct = []() {
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Json config{JsonObject()};
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config["in_memory_world_size"] = 1;
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config["in_memory_rank"] = std::string("0");
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auto *comm = InMemoryCommunicator::Create(config);
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delete comm;
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};
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EXPECT_THROW(construct(), dmlc::Error);
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}
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TEST(InMemoryCommunicatorSimpleTest, GetWorldSizeAndRank) {
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InMemoryCommunicator comm{1, 0};
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EXPECT_EQ(comm.GetWorldSize(), 1);
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EXPECT_EQ(comm.GetRank(), 0);
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}
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TEST(InMemoryCommunicatorSimpleTest, IsDistributed) {
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InMemoryCommunicator comm{1, 0};
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EXPECT_TRUE(comm.IsDistributed());
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}
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TEST_F(InMemoryCommunicatorTest, Allreduce) {
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std::vector<std::thread> threads;
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for (auto rank = 0; rank < kWorldSize; rank++) {
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threads.emplace_back(std::thread(&InMemoryCommunicatorTest::VerifyAllreduce, rank));
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}
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for (auto &thread : threads) {
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thread.join();
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}
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}
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TEST_F(InMemoryCommunicatorTest, Broadcast) {
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std::vector<std::thread> threads;
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for (auto rank = 0; rank < kWorldSize; rank++) {
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threads.emplace_back(std::thread(&InMemoryCommunicatorTest::VerifyBroadcast, rank));
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}
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for (auto &thread : threads) {
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thread.join();
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}
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}
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} // namespace collective
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} // namespace xgboost
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