[MISC] Extend insert_iterator

.github/workflows/ci_coverage.yml

@@ -81,6 +81,7 @@ jobs:
                 --exclude-unreachable-branches \
                 --exclude-throw-branches \
                 --exclude-noncode-lines \
+                --merge-mode-functions separate \
                 -j \
                 --cobertura \
                 --output ${GITHUB_WORKSPACE}/build/coverage_report.xml

include/hibf/interleaved_bloom_filter.hpp

@@ -24,7 +24,6 @@
 #include <cereal/types/base_class.hpp> // for base_class
 
 #include <hibf/cereal/concepts.hpp>           // for cereal_archive
-#include <hibf/config.hpp>                    // for config
 #include <hibf/contrib/aligned_allocator.hpp> // for aligned_allocator
 #include <hibf/misc/bit_vector.hpp>           // for bit_vector
 #include <hibf/misc/counting_vector.hpp>      // for counting_vector
@@ -33,6 +32,10 @@
 
 namespace seqan::hibf
 {
+
+// config.hpp -> misc/insert_iterator.hpp (Needs interleaved_bloom_filter to be a complete class)
+struct config;
+
 /*!\brief A strong type that represents the number of bins for the seqan::hibf::interleaved_bloom_filter.
  * \ingroup ibf
  * \qualifier strong

include/hibf/misc/insert_iterator.hpp

@@ -13,7 +13,9 @@
 #include <vector>     // for vector
 
 #include <hibf/contrib/robin_hood.hpp> // for unordered_flat_set, hash
+#include <hibf/interleaved_bloom_filter.hpp>
 #include <hibf/platform.hpp>
+#include <hibf/sketch/hyperloglog.hpp>
 
 // IWYU pragma: private, include <hibf/config.hpp>
 
@@ -29,32 +31,51 @@ class insert_iterator
     using pointer = void;
     using reference = void;
 
-    insert_iterator() = delete;
-    insert_iterator(insert_iterator const &) = default;
-    insert_iterator(insert_iterator &&) = default;
-    insert_iterator & operator=(insert_iterator const &) = default;
-    insert_iterator & operator=(insert_iterator &&) = default;
-    ~insert_iterator() = default;
+    constexpr insert_iterator() = default;
+    constexpr insert_iterator(insert_iterator const &) = default;
+    constexpr insert_iterator(insert_iterator &&) = default;
+    constexpr insert_iterator & operator=(insert_iterator const &) = default;
+    constexpr insert_iterator & operator=(insert_iterator &&) = default;
+    constexpr ~insert_iterator() = default;
 
-    explicit constexpr insert_iterator(robin_hood::unordered_flat_set<uint64_t> & set) :
-        set{std::addressof(set)},
-        is_set{true}
+    using set_t = robin_hood::unordered_flat_set<uint64_t>;
+    using sketch_t = sketch::hyperloglog;
+    using ibf_t = interleaved_bloom_filter;
+    using function_t = std::function<void(uint64_t const)>;
+
+    explicit constexpr insert_iterator(set_t & set) : ptr{std::addressof(set)}, type{data_type::unordered_set}
+    {}
+
+    explicit constexpr insert_iterator(sketch_t & sketch) : ptr{std::addressof(sketch)}, type{data_type::sketch}
     {}
 
-    explicit constexpr insert_iterator(std::vector<uint64_t> & vec) : vec{std::addressof(vec)}, is_set{false}
+    explicit constexpr insert_iterator(ibf_t & ibf, size_t ibf_bin_index) :
+        ptr{std::addressof(ibf)},
+        ibf_bin_index{ibf_bin_index},
+        type{data_type::ibf}
     {}
 
-    insert_iterator & operator=(uint64_t const value) noexcept
+    explicit constexpr insert_iterator(function_t & fun) : ptr{std::addressof(fun)}, type{data_type::function}
+    {}
+
+    [[gnu::always_inline, gnu::flatten]] inline insert_iterator & operator=(uint64_t const value) noexcept
     {
-        if (is_set)
-        {
-            assert(set != nullptr);
-            set->emplace(value);
-        }
-        else
+        assert(ptr != nullptr);
+
+        switch (type)
         {
-            assert(vec != nullptr);
-            vec->emplace_back(value);
+        case data_type::unordered_set:
+            static_cast<set_t *>(ptr)->emplace(value);
+            break;
+        case data_type::sketch:
+            static_cast<sketch_t *>(ptr)->add(value);
+            break;
+        case data_type::ibf:
+            static_cast<ibf_t *>(ptr)->emplace(value, static_cast<bin_index>(ibf_bin_index));
+            break;
+        default:
+            assert(type == data_type::function);
+            static_cast<function_t *>(ptr)->operator()(value);
         }
         return *this;
     }
@@ -75,9 +96,18 @@ class insert_iterator
     }
 
 private:
-    robin_hood::unordered_flat_set<uint64_t> * set{nullptr};
-    std::vector<uint64_t> * vec{nullptr};
-    bool is_set{false};
+    void * ptr{nullptr};
+
+    enum class data_type : uint8_t
+    {
+        unordered_set,
+        sketch,
+        ibf,
+        function
+    };
+
+    size_t ibf_bin_index{};
+    data_type type{};
 };
 
 } // namespace seqan::hibf

src/build/insert_into_ibf.cpp

@@ -51,20 +51,14 @@ void insert_into_ibf(build_data const & data,
                      layout::layout::user_bin const & record,
                      seqan::hibf::interleaved_bloom_filter & ibf)
 {
-    auto const bin_index = seqan::hibf::bin_index{static_cast<size_t>(record.storage_TB_id)};
-    std::vector<uint64_t> values;
-
     serial_timer local_user_bin_io_timer{};
-    local_user_bin_io_timer.start();
-    data.config.input_fn(record.idx, insert_iterator{values});
-    local_user_bin_io_timer.stop();
-    data.user_bin_io_timer += local_user_bin_io_timer;
-
     serial_timer local_fill_ibf_timer{};
+    local_user_bin_io_timer.start();
     local_fill_ibf_timer.start();
-    for (auto && value : values)
-        ibf.emplace(value, bin_index);
+    data.config.input_fn(record.idx, insert_iterator{ibf, record.storage_TB_id});
+    local_user_bin_io_timer.stop();
     local_fill_ibf_timer.stop();
+    data.user_bin_io_timer += local_user_bin_io_timer;
     data.fill_ibf_timer += local_fill_ibf_timer;
 }
 

src/interleaved_bloom_filter.cpp

@@ -13,15 +13,22 @@
 
 #include <hibf/build/bin_size_in_bits.hpp>   // for bin_size_in_bits
 #include <hibf/config.hpp>                   // for config, insert_iterator
-#include <hibf/contrib/robin_hood.hpp>       // for unordered_flat_set
 #include <hibf/interleaved_bloom_filter.hpp> // for interleaved_bloom_filter, bin_count, bin_index, bin_size, hash_...
 #include <hibf/misc/bit_vector.hpp>          // for bit_vector
 #include <hibf/misc/divide_and_ceil.hpp>     // for divide_and_ceil
-#include <hibf/platform.hpp>                 // for HIBF_COMPILER_IS_GCC
+#include <hibf/misc/insert_iterator.hpp>
+#include <hibf/platform.hpp>                // for HIBF_COMPILER_IS_GCC
+#include <hibf/sketch/compute_sketches.hpp> // for compute_sketches
+#include <hibf/sketch/hyperloglog.hpp>      // for hyperloglog
 
 namespace seqan::hibf
 {
 
+#if HIBF_COMPILER_IS_GCC
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wattributes"
+#endif // HIBF_COMPILER_IS_GCC
+
 interleaved_bloom_filter::interleaved_bloom_filter(seqan::hibf::bin_count bins_,
                                                    seqan::hibf::bin_size size,
                                                    seqan::hibf::hash_function_count funs)
@@ -43,29 +50,48 @@ interleaved_bloom_filter::interleaved_bloom_filter(seqan::hibf::bin_count bins_,
     resize(technical_bins * bin_size_);
 }
 
-size_t max_bin_size(config & configuration, size_t const max_bin_elements)
+size_t find_biggest_bin(config const & configuration)
 {
-    configuration.validate_and_set_defaults();
-
+    size_t bin_id{};
     size_t max_size{};
+    seqan::hibf::sketch::hyperloglog sketch{configuration.sketch_bits};
 
-    if (max_bin_elements == 0u)
+#pragma omp parallel for schedule(dynamic) num_threads(configuration.threads) firstprivate(sketch)
+    for (size_t i = 0u; i < configuration.number_of_user_bins; ++i)
     {
-        robin_hood::unordered_flat_set<uint64_t> kmers;
-#pragma omp parallel for schedule(dynamic) num_threads(configuration.threads) private(kmers)
-        for (size_t i = 0u; i < configuration.number_of_user_bins; ++i)
-        {
-            kmers.clear();
-            configuration.input_fn(i, insert_iterator{kmers});
+        sketch.reset();
+        configuration.input_fn(i, insert_iterator{sketch});
 
+        size_t const estimate = sketch.estimate();
 #pragma omp critical
-            max_size = std::max(max_size, kmers.size());
+        {
+            if (estimate > max_size)
+            {
+                max_size = estimate;
+                bin_id = i;
+            }
         }
     }
-    else
+
+    return bin_id;
+}
+
+size_t max_bin_size(config & configuration, size_t const max_bin_elements)
+{
+    configuration.validate_and_set_defaults();
+
+    size_t const max_size = [&]()
     {
-        max_size = max_bin_elements;
-    }
+        if (max_bin_elements != 0u)
+            return max_bin_elements;
+
+        // Use sketches to determine biggest bin.
+        size_t const max_bin_id = find_biggest_bin(configuration);
+        // Get exact count for biggest bin. Sketch estimate's accuracy depends on configuration.sketch_bits
+        robin_hood::unordered_flat_set<uint64_t> kmers{};
+        configuration.input_fn(max_bin_id, insert_iterator{kmers});
+        return kmers.size();
+    }();
 
     return build::bin_size_in_bits({.fpr = configuration.maximum_fpr, //
                                     .hash_count = configuration.number_of_hash_functions,
@@ -80,16 +106,11 @@ interleaved_bloom_filter::interleaved_bloom_filter(config & configuration, size_
 {
     // NOLINTNEXTLINE(clang-analyzer-deadcode.DeadStores)
     size_t const chunk_size = std::clamp<size_t>(std::bit_ceil(bin_count() / configuration.threads), 8u, 64u);
-    robin_hood::unordered_flat_set<uint64_t> kmers;
 
-#pragma omp parallel for schedule(dynamic, chunk_size) num_threads(configuration.threads) private(kmers)
+#pragma omp parallel for schedule(dynamic, chunk_size) num_threads(configuration.threads)
     for (size_t i = 0u; i < configuration.number_of_user_bins; ++i)
     {
-        kmers.clear();
-        configuration.input_fn(i, insert_iterator{kmers});
-
-        for (uint64_t const hash : kmers)
-            emplace(hash, seqan::hibf::bin_index{i});
+        configuration.input_fn(i, insert_iterator{*this, i});
     }
 }
 
@@ -118,12 +139,12 @@ inline auto interleaved_bloom_filter::emplace_impl(size_t const value, bin_index
         return exists;
 };
 
-void interleaved_bloom_filter::emplace(size_t const value, bin_index const bin) noexcept
+[[gnu::always_inline]] void interleaved_bloom_filter::emplace(size_t const value, bin_index const bin) noexcept
 {
     return emplace_impl<false>(value, bin);
 }
 
-bool interleaved_bloom_filter::emplace_exists(size_t const value, bin_index const bin) noexcept
+[[gnu::always_inline]] bool interleaved_bloom_filter::emplace_exists(size_t const value, bin_index const bin) noexcept
 {
     return emplace_impl<true>(value, bin);
 }
@@ -178,16 +199,9 @@ void interleaved_bloom_filter::increase_bin_number_to(seqan::hibf::bin_count con
     technical_bins = new_technical_bins;
 }
 
-#if HIBF_COMPILER_IS_GCC
-#    pragma GCC diagnostic push
-#    pragma GCC diagnostic ignored "-Wattributes"
-#endif // HIBF_COMPILER_IS_GCC
 [[gnu::always_inline]] bit_vector const &
 interleaved_bloom_filter::membership_agent_type::bulk_contains(size_t const value) & noexcept
 {
-#if HIBF_COMPILER_IS_GCC
-#    pragma GCC diagnostic pop
-#endif // HIBF_COMPILER_IS_GCC
     assert(ibf_ptr != nullptr);
     assert(result_buffer.size() == ibf_ptr->bin_count());
 
@@ -276,4 +290,8 @@ interleaved_bloom_filter::membership_agent_type::bulk_contains(size_t const valu
     return result_buffer;
 }
 
+#if HIBF_COMPILER_IS_GCC
+#    pragma GCC diagnostic pop
+#endif // HIBF_COMPILER_IS_GCC
+
 } // namespace seqan::hibf

src/sketch/compute_sketches.cpp

@@ -27,21 +27,18 @@ namespace seqan::hibf::sketch
 void compute_sketches(config const & config, std::vector<sketch::hyperloglog> & hll_sketches)
 {
     // compute hll_sketches
-    hll_sketches.resize(config.number_of_user_bins);
+    hll_sketches.resize(config.number_of_user_bins, config.sketch_bits);
+
+    assert(std::ranges::all_of(hll_sketches,
+                               [bits = config.sketch_bits](hyperloglog const & sketch)
+                               {
+                                   return sketch.data_size() == (1ULL << bits);
+                               }));
 
-    robin_hood::unordered_flat_set<uint64_t> kmers;
-#pragma omp parallel for schedule(dynamic) num_threads(config.threads) private(kmers)
+#pragma omp parallel for schedule(dynamic) num_threads(config.threads)
     for (size_t i = 0; i < config.number_of_user_bins; ++i)
     {
-        seqan::hibf::sketch::hyperloglog hll_sketch(config.sketch_bits);
-
-        kmers.clear();
-        config.input_fn(i, insert_iterator{kmers});
-
-        for (auto k_hash : kmers)
-            hll_sketch.add(k_hash);
-
-        hll_sketches[i] = std::move(hll_sketch);
+        config.input_fn(i, insert_iterator{hll_sketches[i]});
     }
 }
 

test/performance/ibf/CMakeLists.txt

@@ -5,3 +5,4 @@
 hibf_benchmark (bit_vector_benchmark.cpp)
 hibf_benchmark (bit_vector_serialisation_benchmark.cpp)
 hibf_benchmark (interleaved_bloom_filter_benchmark.cpp)
+hibf_benchmark (interleaved_bloom_filter_construction_benchmark.cpp)