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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (c) 2024, NVIDIA CORPORATION. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| #include <cuvs/neighbors/brute_force.hpp> | ||
| #include <raft/core/copy.cuh> | ||
| #include <raft/core/host_mdarray.hpp> | ||
| #include <raft/core/resources.hpp> | ||
| #include <raft/core/serialize.hpp> | ||
|
|
||
| namespace cuvs::neighbors::brute_force { | ||
|
|
||
| int constexpr serialization_version = 0; | ||
|
|
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| template <typename T, typename DistT> | ||
| void serialize(raft::resources const& handle, | ||
| std::ostream& os, | ||
| const index<T, DistT>& index, | ||
| bool include_dataset = true) | ||
| { | ||
| RAFT_LOG_DEBUG( | ||
| "Saving brute force index, size %zu, dim %u", static_cast<size_t>(index.size()), index.dim()); | ||
|
|
||
| auto dtype_string = raft::detail::numpy_serializer::get_numpy_dtype<T>().to_string(); | ||
| dtype_string.resize(4); | ||
| os << dtype_string; | ||
|
|
||
| raft::serialize_scalar(handle, os, serialization_version); | ||
| raft::serialize_scalar(handle, os, index.size()); | ||
| raft::serialize_scalar(handle, os, index.dim()); | ||
| raft::serialize_scalar(handle, os, index.metric()); | ||
| raft::serialize_scalar(handle, os, index.metric_arg()); | ||
| raft::serialize_scalar(handle, os, include_dataset); | ||
| if (include_dataset) { raft::serialize_mdspan(handle, os, index.dataset()); } | ||
| auto has_norms = index.has_norms(); | ||
| raft::serialize_scalar(handle, os, has_norms); | ||
| if (has_norms) { raft::serialize_mdspan(handle, os, index.norms()); } | ||
| raft::resource::sync_stream(handle); | ||
| } | ||
|
|
||
| void serialize(raft::resources const& handle, | ||
| const std::string& filename, | ||
| const index<half, float>& index, | ||
| bool include_dataset) | ||
| { | ||
| auto os = std::ofstream{filename, std::ios::out | std::ios::binary}; | ||
| RAFT_EXPECTS(os, "Cannot open file %s", filename.c_str()); | ||
| serialize<half, float>(handle, os, index, include_dataset); | ||
| } | ||
|
|
||
| void serialize(raft::resources const& handle, | ||
| const std::string& filename, | ||
| const index<float, float>& index, | ||
| bool include_dataset) | ||
| { | ||
| auto os = std::ofstream{filename, std::ios::out | std::ios::binary}; | ||
| RAFT_EXPECTS(os, "Cannot open file %s", filename.c_str()); | ||
| serialize<float, float>(handle, os, index, include_dataset); | ||
| } | ||
|
|
||
| void serialize(raft::resources const& handle, | ||
| std::ostream& os, | ||
| const index<half, float>& index, | ||
| bool include_dataset) | ||
| { | ||
| serialize<half, float>(handle, os, index, include_dataset); | ||
| } | ||
|
|
||
| void serialize(raft::resources const& handle, | ||
| std::ostream& os, | ||
| const index<float, float>& index, | ||
| bool include_dataset) | ||
| { | ||
| serialize<float, float>(handle, os, index, include_dataset); | ||
| } | ||
|
|
||
| template <typename T, typename DistT> | ||
| auto deserialize(raft::resources const& handle, std::istream& is) | ||
| { | ||
| auto dtype_string = std::array<char, 4>{}; | ||
| is.read(dtype_string.data(), 4); | ||
|
|
||
| auto ver = raft::deserialize_scalar<int>(handle, is); | ||
| if (ver != serialization_version) { | ||
| RAFT_FAIL("serialization version mismatch, expected %d, got %d ", serialization_version, ver); | ||
| } | ||
| std::int64_t rows = raft::deserialize_scalar<size_t>(handle, is); | ||
| std::int64_t dim = raft::deserialize_scalar<size_t>(handle, is); | ||
| auto metric = raft::deserialize_scalar<cuvs::distance::DistanceType>(handle, is); | ||
| auto metric_arg = raft::deserialize_scalar<DistT>(handle, is); | ||
|
|
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| auto dataset_storage = raft::make_host_matrix<T>(std::int64_t{}, std::int64_t{}); | ||
| auto include_dataset = raft::deserialize_scalar<bool>(handle, is); | ||
| if (include_dataset) { | ||
| dataset_storage = raft::make_host_matrix<T>(rows, dim); | ||
| raft::deserialize_mdspan(handle, is, dataset_storage.view()); | ||
| } | ||
|
|
||
| auto has_norms = raft::deserialize_scalar<bool>(handle, is); | ||
| auto norms_storage = has_norms ? std::optional{raft::make_host_vector<DistT, std::int64_t>(rows)} | ||
| : std::optional<raft::host_vector<DistT, std::int64_t>>{}; | ||
| // TODO(wphicks): Use mdbuffer here when available | ||
| auto norms_storage_dev = | ||
| has_norms ? std::optional{raft::make_device_vector<DistT, std::int64_t>(handle, rows)} | ||
| : std::optional<raft::device_vector<DistT, std::int64_t>>{}; | ||
| if (has_norms) { | ||
| raft::deserialize_mdspan(handle, is, norms_storage->view()); | ||
| raft::copy(handle, norms_storage_dev->view(), norms_storage->view()); | ||
| } | ||
|
|
||
| auto result = index<T, DistT>(handle, | ||
| raft::make_const_mdspan(dataset_storage.view()), | ||
| std::move(norms_storage_dev), | ||
| metric, | ||
| metric_arg); | ||
| raft::resource::sync_stream(handle); | ||
|
|
||
| return result; | ||
| } | ||
|
|
||
| void deserialize(raft::resources const& handle, | ||
| const std::string& filename, | ||
| cuvs::neighbors::brute_force::index<half, float>* index) | ||
| { | ||
| auto is = std::ifstream{filename, std::ios::in | std::ios::binary}; | ||
| RAFT_EXPECTS(is, "Cannot open file %s", filename.c_str()); | ||
|
|
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| *index = deserialize<half, float>(handle, is); | ||
| } | ||
|
|
||
| void deserialize(raft::resources const& handle, | ||
| const std::string& filename, | ||
| cuvs::neighbors::brute_force::index<float, float>* index) | ||
| { | ||
| auto is = std::ifstream{filename, std::ios::in | std::ios::binary}; | ||
| RAFT_EXPECTS(is, "Cannot open file %s", filename.c_str()); | ||
|
|
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| *index = deserialize<float, float>(handle, is); | ||
| } | ||
|
|
||
| void deserialize(raft::resources const& handle, | ||
| std::istream& is, | ||
| cuvs::neighbors::brute_force::index<half, float>* index) | ||
| { | ||
| *index = deserialize<half, float>(handle, is); | ||
| } | ||
|
|
||
| void deserialize(raft::resources const& handle, | ||
| std::istream& is, | ||
| cuvs::neighbors::brute_force::index<float, float>* index) | ||
| { | ||
| *index = deserialize<float, float>(handle, is); | ||
| } | ||
|
|
||
| } // namespace cuvs::neighbors::brute_force |
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