101 lines
3.2 KiB
Plaintext
101 lines
3.2 KiB
Plaintext
/**
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* Copyright 2022-2023, XGBoost contributors
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*/
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#ifdef XGBOOST_USE_NCCL
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#include <gtest/gtest.h>
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#include <bitset>
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#include <string> // for string
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#include "../../../src/collective/communicator-inl.cuh"
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#include "../../../src/collective/nccl_device_communicator.cuh"
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#include "../helpers.h"
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namespace xgboost {
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namespace collective {
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TEST(NcclDeviceCommunicatorSimpleTest, ThrowOnInvalidDeviceOrdinal) {
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auto construct = []() { NcclDeviceCommunicator comm{-1, false}; };
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EXPECT_THROW(construct(), dmlc::Error);
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}
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TEST(NcclDeviceCommunicatorSimpleTest, SystemError) {
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try {
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dh::safe_nccl(ncclSystemError);
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} catch (dmlc::Error const& e) {
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auto str = std::string{e.what()};
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ASSERT_TRUE(str.find("environment variables") != std::string::npos);
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}
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}
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namespace {
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void VerifyAllReduceBitwiseAND() {
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auto const rank = collective::GetRank();
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std::bitset<64> original{};
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original[rank] = true;
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HostDeviceVector<uint64_t> buffer({original.to_ullong()}, rank);
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collective::AllReduce<collective::Operation::kBitwiseAND>(rank, buffer.DevicePointer(), 1);
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collective::Synchronize(rank);
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EXPECT_EQ(buffer.HostVector()[0], 0ULL);
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}
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} // anonymous namespace
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TEST(NcclDeviceCommunicator, MGPUAllReduceBitwiseAND) {
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auto const n_gpus = common::AllVisibleGPUs();
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if (n_gpus <= 1) {
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GTEST_SKIP() << "Skipping MGPUAllReduceBitwiseAND test with # GPUs = " << n_gpus;
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}
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auto constexpr kUseNccl = true;
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RunWithInMemoryCommunicator<kUseNccl>(n_gpus, VerifyAllReduceBitwiseAND);
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}
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namespace {
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void VerifyAllReduceBitwiseOR() {
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auto const world_size = collective::GetWorldSize();
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auto const rank = collective::GetRank();
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std::bitset<64> original{};
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original[rank] = true;
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HostDeviceVector<uint64_t> buffer({original.to_ullong()}, rank);
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collective::AllReduce<collective::Operation::kBitwiseOR>(rank, buffer.DevicePointer(), 1);
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collective::Synchronize(rank);
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EXPECT_EQ(buffer.HostVector()[0], (1ULL << world_size) - 1);
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}
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} // anonymous namespace
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TEST(NcclDeviceCommunicator, MGPUAllReduceBitwiseOR) {
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auto const n_gpus = common::AllVisibleGPUs();
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if (n_gpus <= 1) {
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GTEST_SKIP() << "Skipping MGPUAllReduceBitwiseOR test with # GPUs = " << n_gpus;
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}
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auto constexpr kUseNccl = true;
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RunWithInMemoryCommunicator<kUseNccl>(n_gpus, VerifyAllReduceBitwiseOR);
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}
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namespace {
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void VerifyAllReduceBitwiseXOR() {
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auto const world_size = collective::GetWorldSize();
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auto const rank = collective::GetRank();
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std::bitset<64> original{~0ULL};
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original[rank] = false;
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HostDeviceVector<uint64_t> buffer({original.to_ullong()}, rank);
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collective::AllReduce<collective::Operation::kBitwiseXOR>(rank, buffer.DevicePointer(), 1);
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collective::Synchronize(rank);
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EXPECT_EQ(buffer.HostVector()[0], (1ULL << world_size) - 1);
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}
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} // anonymous namespace
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TEST(NcclDeviceCommunicator, MGPUAllReduceBitwiseXOR) {
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auto const n_gpus = common::AllVisibleGPUs();
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if (n_gpus <= 1) {
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GTEST_SKIP() << "Skipping MGPUAllReduceBitwiseXOR test with # GPUs = " << n_gpus;
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}
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auto constexpr kUseNccl = true;
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RunWithInMemoryCommunicator<kUseNccl>(n_gpus, VerifyAllReduceBitwiseXOR);
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}
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} // namespace collective
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} // namespace xgboost
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#endif // XGBOOST_USE_NCCL
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