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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. | ||
| */ | ||
|
|
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| #include <benchmark_defaults.hpp> | ||
| #include <benchmark_utils.hpp> | ||
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| #include <cuco/static_multiset.cuh> | ||
| #include <cuco/utility/key_generator.cuh> | ||
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| #include <nvbench/nvbench.cuh> | ||
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| #include <thrust/device_vector.h> | ||
| #include <thrust/transform.h> | ||
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| using namespace cuco::benchmark; | ||
| using namespace cuco::utility; | ||
|
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| /** | ||
| * @brief A benchmark evaluating `cuco::static_multiset::retrieve` performance | ||
| */ | ||
| template <typename Key, typename Dist> | ||
| void static_multiset_retrieve(nvbench::state& state, nvbench::type_list<Key, Dist>) | ||
| { | ||
| auto const num_keys = state.get_int64_or_default("NumInputs", defaults::N); | ||
| auto const occupancy = state.get_float64_or_default("Occupancy", defaults::OCCUPANCY); | ||
| auto const matching_rate = state.get_float64_or_default("MatchingRate", defaults::MATCHING_RATE); | ||
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| std::size_t const size = num_keys / occupancy; | ||
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| thrust::device_vector<Key> keys(num_keys); | ||
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| key_generator gen; | ||
| gen.generate(dist_from_state<Dist>(state), keys.begin(), keys.end()); | ||
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| gen.dropout(keys.begin(), keys.end(), matching_rate); | ||
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| state.add_element_count(num_keys); | ||
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| cuco::static_multiset<Key> set{size, cuco::empty_key<Key>{-1}}; | ||
| set.insert(keys.begin(), keys.end()); | ||
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| auto const output_size = set.count(keys.begin(), keys.end()); | ||
| thrust::device_vector<Key> output_match(output_size); | ||
| auto output_probe_begin = thrust::discard_iterator{}; | ||
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| state.exec(nvbench::exec_tag::sync, [&](nvbench::launch& launch) { | ||
| set.retrieve( | ||
| keys.begin(), keys.end(), output_probe_begin, output_match.begin(), {launch.get_stream()}); | ||
| }); | ||
| } | ||
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| NVBENCH_BENCH_TYPES(static_multiset_retrieve, | ||
| NVBENCH_TYPE_AXES(defaults::KEY_TYPE_RANGE, | ||
| nvbench::type_list<distribution::uniform>)) | ||
| .set_name("static_multiset_retrieve_uniform_occupancy") | ||
| .set_type_axes_names({"Key", "Distribution"}) | ||
| .set_max_noise(defaults::MAX_NOISE) | ||
| .add_float64_axis("Occupancy", defaults::OCCUPANCY_RANGE); | ||
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| NVBENCH_BENCH_TYPES(static_multiset_retrieve, | ||
| NVBENCH_TYPE_AXES(defaults::KEY_TYPE_RANGE, | ||
| nvbench::type_list<distribution::uniform>)) | ||
| .set_name("static_multiset_retrieve_uniform_matching_rate") | ||
| .set_type_axes_names({"Key", "Distribution"}) | ||
| .set_max_noise(defaults::MAX_NOISE) | ||
| .add_float64_axis("MatchingRate", defaults::MATCHING_RATE_RANGE); | ||
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| NVBENCH_BENCH_TYPES(static_multiset_retrieve, | ||
| NVBENCH_TYPE_AXES(defaults::KEY_TYPE_RANGE, | ||
| nvbench::type_list<distribution::uniform>)) | ||
| .set_name("static_multiset_retrieve_uniform_multiplicity") | ||
| .set_type_axes_names({"Key", "Distribution"}) | ||
| .set_max_noise(defaults::MAX_NOISE) | ||
| .add_int64_axis("Multiplicity", defaults::MULTIPLICITY_RANGE); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| #include <cuco/static_multiset.cuh> | ||
|
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| #include <thrust/device_vector.h> | ||
| #include <thrust/functional.h> | ||
| #include <thrust/logical.h> | ||
| #include <thrust/sequence.h> | ||
|
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| #include <iostream> | ||
| #include <limits> | ||
|
|
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| /** | ||
| * @file host_bulk_example.cu | ||
| * @brief Demonstrates usage of the static_multiset "bulk" host APIs. | ||
| * | ||
| * The bulk APIs are only invocable from the host and are used for doing operations like `insert` or | ||
| * `retrieve` on a multiset of keys. | ||
| * | ||
| */ | ||
| int main(void) | ||
| { | ||
| using key_type = int; | ||
|
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| // Empty slots are represented by reserved "sentinel" values. These values should be selected such | ||
| // that they never occur in your input data. | ||
| key_type constexpr empty_key_sentinel = -1; | ||
|
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| // Number of keys to be inserted | ||
| std::size_t constexpr num_keys = 50'000; | ||
|
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| // Compute capacity based on a 50% load factor | ||
| auto constexpr load_factor = 0.5; | ||
| std::size_t const capacity = std::ceil(num_keys / load_factor); | ||
|
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| // Constructs a set with at least `capacity` slots using -1 as the empty keys sentinel. | ||
| cuco::static_multiset<key_type> multiset{capacity, cuco::empty_key{empty_key_sentinel}}; | ||
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| // Create a sequence of keys {0, 1, 2, .., i} | ||
| // We're going to insert each key twice so we only need 'num_keys / 2' distinct keys. | ||
| thrust::device_vector<key_type> keys(num_keys / 2); | ||
| thrust::sequence(keys.begin(), keys.end(), 0); | ||
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| // Inserts all keys into the hash set | ||
| multiset.insert(keys.begin(), keys.end()); | ||
| // Insert the same set of keys again, so each distinct key should occur twice in the multiset | ||
| multiset.insert(keys.begin(), keys.end()); | ||
|
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| // Counts the occurrences of matching keys contained in the multiset. | ||
| std::size_t const counted_output_size = multiset.count(keys.begin(), keys.end()); | ||
|
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| // Storage for result | ||
| thrust::device_vector<key_type> output_probes(counted_output_size); | ||
| thrust::device_vector<key_type> output_matches(counted_output_size); | ||
|
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| // Retrieve all matching keys | ||
| auto const [output_probes_end, _] = | ||
| multiset.retrieve(keys.begin(), keys.end(), output_probes.begin(), output_matches.begin()); | ||
| std::size_t const retrieved_output_size = output_probes_end - output_probes.begin(); | ||
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| if ((retrieved_output_size == counted_output_size) and (retrieved_output_size == num_keys)) { | ||
| std::cout << "Success! Found all keys.\n"; | ||
| } else { | ||
| std::cout << "Fail! Something went wrong.\n"; | ||
| } | ||
|
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| return 0; | ||
| } |
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