[pnnl#198] add shad STL algorithm examples

examples/stl_algorithm/array.cc

@@ -0,0 +1,142 @@
+//===------------------------------------------------------------*- C++ -*-===//
+//
+//                                     SHAD
+//
+//      The Scalable High-performance Algorithms and Data Structure Library
+//
+//===----------------------------------------------------------------------===//
+//
+// Copyright 2018 Battelle Memorial Institute
+//
+// 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 <stdlib.h>
+#include <iostream>
+#include <random>
+
+#include "shad/core/algorithm.h"
+#include "shad/core/array.h"
+#include "shad/util/measure.h"
+
+constexpr static size_t kArraySize = 1024;
+using iterator = shad::impl::array<int, kArraySize>::array_iterator<int>;
+
+void shad_generate_algorithm(shad::array<int, kArraySize> &in) {
+  shad::generate(shad::distributed_parallel_tag{}, in.begin(), in.end(), [=]() {
+    std::random_device rd;
+    std::default_random_engine G(rd());
+    std::uniform_int_distribution<int> dist(1, 10);
+    return dist(G);
+  });
+}
+
+void shad_fill_algorithm(shad::array<int, kArraySize> &in) {
+  shad::fill(shad::distributed_parallel_tag{}, in.begin(), in.end(), 42);
+}
+
+size_t shad_count_algorithm(shad::array<int, kArraySize> &in) {
+  auto counter =
+      shad::count(shad::distributed_parallel_tag{}, in.begin(), in.end(), 1);
+  return counter;
+}
+
+iterator shad_find_if_algorithm(shad::array<int, kArraySize> &in) {
+  auto iter = shad::find_if(shad::distributed_parallel_tag{}, in.begin(),
+                            in.end(), [](int i) { return i % 2 == 0; });
+  return iter;
+}
+
+void shad_for_each_algorithm(shad::array<int, kArraySize> &in) {
+  shad::for_each(shad::distributed_parallel_tag{}, in.begin(), in.end(),
+                 [](int &i) { i++; });
+}
+
+std::pair<iterator, iterator> shad_minmax_algorithm(
+    shad::array<int, kArraySize> &in) {
+  auto [min, max] = shad::minmax_element(shad::distributed_parallel_tag{},
+                                         in.begin(), in.end());
+  return {min, max};
+}
+
+void shad_transform_algorithm(shad::array<int, kArraySize> &in) {
+  shad::transform(shad::distributed_parallel_tag{}, in.begin(), in.end(),
+                  in.begin(), [](int i) { return i + 2; });
+}
+
+namespace shad {
+
+int main(int argc, char *argv[]) {
+  // array
+  shad::array<int, kArraySize> in;
+
+  // shad fill algorithm
+  auto execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { shad_fill_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::fill took " << execute_time.count()
+            << " seconds" << std::endl;
+
+  // shad generate algorithm
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { shad_generate_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::generate took " << execute_time.count()
+            << " seconds" << std::endl;
+
+  // shad count algorithm
+  size_t counter;
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { counter = shad_count_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::count took " << execute_time.count()
+            << " seconds (numbers of 0 = " << counter << " )" << std::endl;
+
+  // shad find_if algorithm
+  iterator iter;
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { iter = shad_find_if_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::find_if took " << execute_time.count()
+            << " seconds, ";
+  (iter != in.end())
+      ? std::cout << "array contains an even number" << std::endl
+      : std::cout << "array does not contain even numbers" << std::endl;
+
+  // shad for_each algorithm
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { shad_for_each_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::for_each took " << execute_time.count()
+            << " seconds" << std::endl;
+
+  // shad minmax algorithm
+  std::pair<iterator, iterator> min_max;
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { min_max = shad_minmax_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::minmax took " << execute_time.count()
+            << " seconds" << std::endl;
+
+  // shad transform algorithm
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { shad_transform_algorithm(in); });
+  std::cout << "Array, using " << shad::rt::numLocalities()
+            << " localities, shad::transform took " << execute_time.count()
+            << " seconds" << std::endl;
+
+  return 0;
+}
+
+}  // namespace shad

examples/stl_algorithm/unordered_map.cc

@@ -0,0 +1,145 @@
+//===------------------------------------------------------------*- C++ -*-===//
+//
+//                                     SHAD
+//
+//      The Scalable High-performance Algorithms and Data Structure Library
+//
+//===----------------------------------------------------------------------===//
+//
+// Copyright 2018 Battelle Memorial Institute
+//
+// 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 <iostream>
+
+#include "shad/core/algorithm.h"
+#include "shad/core/unordered_map.h"
+#include "shad/util/measure.h"
+
+constexpr static size_t kSize = 1024;
+using hashmap_t =
+    shad::Hashmap<int, int, shad::MemCmp<int>, shad::Updater<int>>;
+using iterator = hashmap_t::iterator;
+using value_type = hashmap_t::value_type;
+using shad_inserter_t = shad::insert_iterator<shad::unordered_map<int, int>>;
+using shad_buffered_inserter_t =
+    shad::buffered_insert_iterator<shad::unordered_map<int, int>>;
+
+std::pair<iterator, iterator> shad_minmax_algorithm(
+    shad::unordered_map<int, int> &in) {
+  auto [min, max] = shad::minmax_element(shad::distributed_parallel_tag{},
+                                         in.begin(), in.end());
+  return {min, max};
+}
+
+iterator shad_find_if_algorithm(shad::unordered_map<int, int> &in) {
+  auto iter =
+      shad::find_if(shad::distributed_parallel_tag{}, in.begin(), in.end(),
+                    [](const value_type &i) { return i.second % 2 == 0; });
+  return iter;
+}
+
+bool shad_any_of_algorithm(shad::unordered_map<int, int> &in) {
+  auto res =
+      shad::any_of(shad::distributed_parallel_tag{}, in.begin(), in.end(),
+                   [](const value_type &i) { return i.second % 7 == 0; });
+  return res;
+}
+
+size_t shad_count_if_algorithm(shad::unordered_map<int, int> &in) {
+  auto counter =
+      shad::count_if(shad::distributed_parallel_tag{}, in.begin(), in.end(),
+                     [](const value_type &i) { return i.second % 4 == 0; });
+  return counter;
+}
+
+template <typename shad_inserter>
+void shad_transform_algorithm(shad::unordered_map<int, int> &in) {
+  shad::unordered_map<int, int> out;
+  shad::transform(shad::distributed_parallel_tag{}, in.begin(), in.end(),
+                  shad_inserter(out, out.begin()),
+                  [](const value_type &i) { return i; });
+}
+
+namespace shad {
+
+int main(int argc, char *argv[]) {
+  // unordered_map
+  shad::unordered_map<int, int> map_;
+
+  // create map
+  shad_buffered_inserter_t ins(map_, map_.begin());
+  for (size_t i = 0; i < kSize; ++i) {
+    ins = std::make_pair(i, 3 * (i + 1));
+  }
+  ins.wait();
+  ins.flush();
+
+  // shad minmax algorithm
+  std::pair<iterator, iterator> min_max;
+  auto execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { min_max = shad_minmax_algorithm(map_); });
+  std::cout << "Unordered map, using " << shad::rt::numLocalities()
+            << " localities, shad::count took " << execute_time.count()
+            << " seconds (min = " << (*min_max.first).second
+            << ", max = " << (*min_max.second).second << " )" << std::endl;
+
+  // shad find_if algorithm
+  iterator iter;
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { iter = shad_find_if_algorithm(map_); });
+  std::cout << "Unordered map, using " << shad::rt::numLocalities()
+            << " localities, shad::find_if took " << execute_time.count()
+            << " seconds, ";
+  (iter != map_.end())
+      ? std::cout << "and this unordered map contains an even number"
+                  << std::endl
+      : std::cout << "and this unordered map does not contain even numbers"
+                  << std::endl;
+
+  // shad any_of algorithm
+  bool res;
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { res = shad_any_of_algorithm(map_); });
+  std::cout << "Unordered map, using " << shad::rt::numLocalities()
+            << " localities, shad::any_of took " << execute_time.count()
+            << " seconds, ";
+  (res == true) ? std::cout << "and this unordered map contains at least one "
+                               "number that is divisible by 7"
+                            << std::endl
+                : std::cout << "and this unordered map does not contain any "
+                               "number that is divisible by 7"
+                            << std::endl;
+
+  // shad count_if algorithm
+  size_t counter;
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { counter = shad_count_if_algorithm(map_); });
+  std::cout << "Unordered map, using " << shad::rt::numLocalities()
+            << " localities, shad::count_if took " << execute_time.count()
+            << " seconds, "
+            << "and number divisible by 4: " << counter << std::endl;
+
+  // shad transform algorithm
+  execute_time = shad::measure<std::chrono::seconds>::duration(
+      [&]() { shad_transform_algorithm<shad_inserter_t>(map_); });
+  std::cout << "Unordered map, using " << shad::rt::numLocalities()
+            << " localities, shad::transform took " << execute_time.count()
+            << " seconds" << std::endl;
+
+  return 0;
+}
+
+}  // namespace shad