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1250 lines (991 loc) · 35 KB
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#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include <doctest.h>
#include <taskflow/taskflow.hpp>
#include <taskflow/algorithm/for_each.hpp>
#include <taskflow/algorithm/transform.hpp>
#include <taskflow/algorithm/reduce.hpp>
#include <taskflow/algorithm/scan.hpp>
#include <taskflow/algorithm/sort.hpp>
#include <taskflow/algorithm/module.hpp>
// ----------------------------------------------------------------------------
// embarrassing parallelism
// ----------------------------------------------------------------------------
void embarrassing_parallelism(unsigned W) {
tf::Executor executor(W);
std::atomic<int> counter(0);
int N = 100000;
for (int i = 0; i < N/2; ++i) {
executor.silent_dependent_async(
tf::TaskParams{std::to_string(i)}, [&](){
counter.fetch_add(1, std::memory_order_relaxed);
}
);
}
for (int i = N/2; i < N; ++i) {
executor.dependent_async(
tf::DefaultTaskParams{}, [&](){
counter.fetch_add(1, std::memory_order_relaxed);
}
);
}
executor.wait_for_all();
int cnt = counter.load(std::memory_order_relaxed);
REQUIRE(cnt == N);
}
TEST_CASE("DependentAsync.EmbarrassingParallelism.1thread" * doctest::timeout(300)) {
embarrassing_parallelism(1);
}
TEST_CASE("DependentAsync.EmbarrassingParallelism.2threads" * doctest::timeout(300)) {
embarrassing_parallelism(2);
}
TEST_CASE("DependentAsync.EmbarrassingParallelism.4threads" * doctest::timeout(300)) {
embarrassing_parallelism(4);
}
TEST_CASE("DependentAsync.EmbarrassingParallelism.8threads" * doctest::timeout(300)) {
embarrassing_parallelism(8);
}
TEST_CASE("DependentAsync.EmbarrassingParallelism.16threads" * doctest::timeout(300)) {
embarrassing_parallelism(16);
}
// ----------------------------------------------------------------------------
// Linear Chain
// ----------------------------------------------------------------------------
void silent_dependent_async_linear_chain(unsigned W) {
tf::Executor executor(W);
int N = 100000;
std::vector<tf::CachelineAligned<int>> results(N);
std::vector<tf::AsyncTask> tasks;
for (int i = 0; i < N; ++i) {
if (i == 0) {
auto t = executor.silent_dependent_async(
[&results, i](){
results[i].data = i+1;
}
);
tasks.push_back(t);
}
else {
auto t = executor.silent_dependent_async(
[&results, i](){
results[i].data = results[i-1].data + i;
}, tasks.begin(), tasks.end()
);
tasks.clear();
tasks.push_back(t);
}
}
executor.wait_for_all();
REQUIRE(results[0].data == 1);
for (int i = 1; i < N; ++i) {
REQUIRE(results[i].data == results[i-1].data + i);
}
}
TEST_CASE("SilentDependentAsync.LinearChain.1thread" * doctest::timeout(300)) {
silent_dependent_async_linear_chain(1);
}
TEST_CASE("SilentDependentAsync.LinearChain.2threads" * doctest::timeout(300)) {
silent_dependent_async_linear_chain(2);
}
TEST_CASE("SilentDependentAsync.LinearChain.4threads" * doctest::timeout(300)) {
silent_dependent_async_linear_chain(4);
}
TEST_CASE("SilentDependentAsync.LinearChain.8threads" * doctest::timeout(300)) {
silent_dependent_async_linear_chain(8);
}
TEST_CASE("SilentDependentAsync.LinearChain.16threads" * doctest::timeout(300)) {
silent_dependent_async_linear_chain(16);
}
// ----------------------------------------------------------------------------
// Simple Graph
// ----------------------------------------------------------------------------
// task dependence :
//
// |--> 1 |--> 4
// 0 ----> 2 -----> 5
// |--> 3 |--> 6
//
void simple_graph(unsigned W) {
tf::Executor executor(W);
size_t count = 7;
std::vector<int> results;
std::vector<tf::AsyncTask> tasks;
for (int id = 0; id < 100; ++id) {
results.resize(count);
auto t0 = executor.silent_dependent_async(
[&](){
results[0] = 100 + id;
}
);
tasks.push_back(t0);
auto t1 = executor.silent_dependent_async(
[&](){
results[1] = results[0] * 6 + id;
}, tasks.begin(), tasks.end()
);
auto t2 = executor.silent_dependent_async(
[&](){
results[2] = results[0] - 200 + id;
}, tasks.begin(), tasks.end()
);
auto t3 = executor.silent_dependent_async(
[&](){
results[3] = results[0] / 9 + id;
}, tasks.begin(), tasks.end()
);
auto t4 = executor.silent_dependent_async(
[&](){
results[4] = results[2] + 66 + id;
}, t2
);
auto t5 = executor.silent_dependent_async(
[&](){
results[5] = results[2] - 999 + id;
}, t2
);
auto t6 = executor.silent_dependent_async(
[&](){
results[6] = results[2] * 9 / 13 + id;
}, t2
);
executor.wait_for_all();
for (size_t i = 0; i < count; ++i) {
switch (i) {
case 0:
REQUIRE(results[i] == 100 + id);
break;
case 1:
REQUIRE(results[i] == results[0] * 6 + id);
break;
case 2:
REQUIRE(results[i] == results[0] - 200 + id);
break;
case 3:
REQUIRE(results[i] == results[0] / 9 + id);
break;
case 4:
REQUIRE(results[i] == results[2] + 66 + id);
break;
case 5:
REQUIRE(results[i] == results[2] - 999 + id);
break;
case 6:
REQUIRE(results[i] == results[2] * 9 / 13 + id);
break;
}
}
results.clear();
tasks.clear();
}
}
TEST_CASE("SilentDependentAsync.SimpleGraph.1thread" * doctest::timeout(300)) {
simple_graph(1);
}
TEST_CASE("SilentDependentAsync.SimpleGraph.2threads" * doctest::timeout(300)) {
simple_graph(2);
}
TEST_CASE("SilentDependentAsync.SimpleGraph.4threads" * doctest::timeout(300)) {
simple_graph(4);
}
TEST_CASE("SilentDependentAsync.SimpleGraph.8threads" * doctest::timeout(300)) {
simple_graph(8);
}
TEST_CASE("SilentDependentAsync.SimpleGraph.16threads" * doctest::timeout(300)) {
simple_graph(16);
}
// task dependence :
// ----------------------------
// | |--> 3 --| |
// | | --> 7 --->|
// 0 ---| |--> 4 --| |
// v ^ v
// --> 2 --| ---------------------> 9
// ^ v ^
// 1 ---| |--> 5 --| |
// | | --> 8 --->|
// | |--> 6 --| |
// -----------------------------
void simple_graph_2(unsigned W) {
tf::Executor executor(W);
size_t count = 10;
std::vector<tf::CachelineAligned<int>> results(count);
std::vector<tf::AsyncTask> tasks1;
std::vector<tf::AsyncTask> tasks2;
std::vector<tf::AsyncTask> tasks3;
std::vector<tf::AsyncTask> tasks4;
for (int id = 0; id < 100; ++id) {
results.resize(count);
auto t0 = executor.silent_dependent_async(
"t0", [&](){
results[0].data = 100 + id;
}
);
auto t1 = executor.silent_dependent_async(
"t1", [&](){
results[1].data = 6 * id;
}
);
auto t2 = executor.silent_dependent_async(
"t2", [&](){
results[2].data = results[0].data + results[1].data + id;
}, t0, t1
);
tasks1.push_back(t2);
auto [t3, fu3] = executor.dependent_async(
"t3", [&](){
results[3].data = results[2].data + id;
return results[3].data;
}, tasks1.begin(), tasks1.end()
);
auto t4 = executor.silent_dependent_async(
"t4", [&](){
results[4].data = results[2].data + id;
}, tasks1.begin(), tasks1.end()
);
auto [t5, fu5] = executor.dependent_async(
"t5", [&](){
results[5].data = results[2].data + id;
return results[5].data;
}, tasks1.begin(), tasks1.end()
);
auto t6 = executor.silent_dependent_async(
"t6", [&](){
results[6].data = results[2].data + id;
}, tasks1.begin(), tasks1.end()
);
tasks2.push_back(t3);
tasks2.push_back(t4);
tasks3.push_back(t5);
tasks3.push_back(t6);
auto [t7, fu7] = executor.dependent_async(
"t7", [&](){
results[7].data = results[3].data + results[4].data + id;
return results[7].data;
}, tasks2.begin(), tasks2.end()
);
auto t8 = executor.silent_dependent_async(
"t8", [&](){
results[8].data = results[5].data + results[6].data + id;
}, tasks3.begin(), tasks3.end()
);
tasks4.push_back(t0);
tasks4.push_back(t1);
tasks4.push_back(t2);
tasks4.push_back(t7);
tasks4.push_back(t8);
auto [t9, fu9] = executor.dependent_async(
"t9", [&](){
results[9].data = results[0].data + results[1].data +
results[2].data + results[7].data + results[8].data + id;
return results[9].data;
}, tasks4.begin(), tasks4.end()
);
REQUIRE(fu9.get() == results[9].data);
REQUIRE(fu3.wait_for(std::chrono::microseconds(1)) == std::future_status::ready);
REQUIRE(fu3.get() == results[3].data);
REQUIRE(fu5.wait_for(std::chrono::microseconds(1)) == std::future_status::ready);
REQUIRE(fu5.get() == results[5].data);
REQUIRE(fu7.wait_for(std::chrono::microseconds(1)) == std::future_status::ready);
REQUIRE(fu7.get() == results[7].data);
for (size_t i = 0; i < count; ++i) {
switch (i) {
case 0:
REQUIRE(results[i].data == 100 + id);
break;
case 1:
REQUIRE(results[i].data == 6 * id);
break;
case 2:
REQUIRE(results[i].data == results[0].data + results[1].data + id);
break;
case 3:
REQUIRE(results[i].data == results[2].data + id);
break;
case 4:
REQUIRE(results[i].data == results[2].data+ id);
break;
case 5:
REQUIRE(results[i].data == results[2].data + id);
break;
case 6:
REQUIRE(results[i].data == results[2].data + id);
break;
case 7:
REQUIRE(results[i].data == results[3].data + results[4].data + id);
break;
case 8:
REQUIRE(results[i].data == results[5].data + results[5].data + id);
break;
case 9:
REQUIRE(results[i].data == results[0].data + results[1].data +
results[2].data + results[7].data + results[8].data + id);
break;
}
}
results.clear();
tasks1.clear();
tasks2.clear();
tasks3.clear();
tasks4.clear();
}
}
TEST_CASE("DependentAsync.SimpleGraph2.1thread" * doctest::timeout(300)) {
simple_graph_2(1);
}
TEST_CASE("DependentAsync.SimpleGraph2.2threads" * doctest::timeout(300)) {
simple_graph_2(2);
}
TEST_CASE("DependentAsync.SimpleGraph2.4threads" * doctest::timeout(300)) {
simple_graph_2(4);
}
TEST_CASE("DependentAsync.SimpleGraph2.8threads" * doctest::timeout(300)) {
simple_graph_2(8);
}
TEST_CASE("DependentAsync.SimpleGraph2.16threads" * doctest::timeout(300)) {
simple_graph_2(16);
}
// -------------------------------------------------------------------------------------
// Complex Graph
// -------------------------------------------------------------------------------------
//
// task graph
// ---> 101 ----
// | . |
// ---> 1 ----> . ---> 10101 ---
// | . | . | . |
// | . ---> 200 ---- . |
// | . . . |
// 0 --> . . . ---> 10201
// | . . . |
// | . ---> 10001 -- . |
// | . | . | . |
// ---> 100 --> . ---> 10200 ---
// | . |
// ---> 10100 --
//
// level 0 : task 0 has 100 output edges pointing to task 1 to task 100
// level 1 : task 1 has 100 output edges pointing to task 101 to task 200
// task 2 has 100 output edges pointing to task 201 to task 300
// task 100 has 100 output edges pointing to task 10001 to task 10100
// level 2 : task 101 to task 200 has the same output edge pointing to task 10101
// task 201 to task 300 has the same output edge pointing to task 10102
// task 10001 to task 10100 has the same output edge pointing to from task 10200
// level 3 : task 10101 to task 10200 has the same output edge pointing to task 10201
auto make_complex_graph(tf::Executor& executor, int r) {
int count = 10202;
std::vector<tf::CachelineAligned<int>> results(count);
std::vector<tf::AsyncTask> tasks_level_1;
std::vector<tf::AsyncTask> tasks_level_2;
std::vector<tf::AsyncTask> tasks_level_3;
// define task 0
auto task0 = executor.silent_dependent_async(
"0", [&results, r](){
results[0].data = 100 + r;
}
);
// define task 1 to task 100
// and push them in the vector tasks_level_1
for (int i = 1; i <= 100; ++i) {
tasks_level_1.push_back(
executor.silent_dependent_async(
[&results, i, r](){
results[i].data = results[0].data + i + r;
},
task0
)
);
}
// define task 101 to task 10100
// and push them in the vector tasks_level_2
for (int i = 101; i <= 10100; ++i) {
tasks_level_2.push_back(
executor.silent_dependent_async(
[&results, i, r](){
results[i].data = results[(i-1)/100].data + i + r;
},
std::next(tasks_level_1.begin(), (i-1)/100-1),
std::next(tasks_level_1.begin(), (i-1)/100)
)
);
}
// define task 10101 to task 10200
// and push them in the vector tasks_level_3
for (int i = 10101; i <= 10200; ++i) {
tasks_level_3.push_back(
executor.silent_dependent_async(
[&results, i, r](){
int value = 0;
int beg = i-10101;
beg = (beg+1)*100+1;
for (int j = beg; j < beg+100; ++j) {
value += results[j].data;
}
results[i].data = value + i + r;
},
std::next(tasks_level_2.begin(),(i-10101)*100),
std::next(tasks_level_2.begin(), (i-10101)*100+100)
)
);
}
// define task 10201
executor.dependent_async(
"10201", [&results, r](){
int value = 0;
for (int i = 10101; i <= 10200; ++i) {
value += results[i].data;
}
results[10201].data = value + 10201 + r;
return results[10201].data;
},
tasks_level_3.begin(), tasks_level_3.end()
).second.get();
// verify the result
for (int i = 0; i < 10202; ++i) {
if (i == 0) {
REQUIRE(results[i].data == 100 + r);
}
else if (i >= 1 && i <= 100) {
REQUIRE(results[i].data == results[0].data + i + r);
}
else if (i >= 101 && i <= 10100) {
REQUIRE(results[i].data == results[(i-1)/100].data + i + r);
}
else if (i >= 10101 && i <= 10200) {
int value = 0;
int beg = i-10101;
beg = (beg+1)*100+1;
for (int j = beg; j < beg+100; ++j) {
value += results[j].data;
}
REQUIRE(results[i].data == value + i + r);
}
else if (i == 10201) {
int value = 0;
for (int j = 10101; j <= 10200; ++j) {
value += results[j].data;
}
REQUIRE(results[i].data == value + r + 10201);
}
}
}
void complex_graph(unsigned W) {
tf::Executor executor(W);
for (int r = 0; r < 10; ++r) {
make_complex_graph(executor, r);
}
}
TEST_CASE("DependentAsync.ComplexGraph.1thread" * doctest::timeout(300)) {
complex_graph(1);
}
TEST_CASE("DependentAsync.ComplexGraph.2threads" * doctest::timeout(300)) {
complex_graph(2);
}
TEST_CASE("DependentAsync.ComplexGraph.4threads" * doctest::timeout(300)) {
complex_graph(4);
}
TEST_CASE("DependentAsync.ComplexGraph.8threads" * doctest::timeout(300)) {
complex_graph(8);
}
TEST_CASE("DependentAsync.ComplexGraph.16threads" * doctest::timeout(300)) {
complex_graph(16);
}
// ----------------------------------------------------------------------------
// Complex Worker From Worker
// ----------------------------------------------------------------------------
// since make_complex_graph blocks so W must be at least one larger than R
void complex_graph_from_worker(unsigned W, int R) {
tf::Executor executor(W);
tf::Taskflow taskflow;
for(int r=0; r<R; r++) {
taskflow.emplace([&executor, r](){
make_complex_graph(executor, r);
});
}
executor.run(taskflow).wait();
}
TEST_CASE("DependentAsync.ComplexGraphFromWorker.2threads" * doctest::timeout(300)) {
complex_graph_from_worker(2, 1);
}
TEST_CASE("DependentAsync.ComplexGraphFromWorker.4threads" * doctest::timeout(300)) {
complex_graph_from_worker(4, 3);
}
TEST_CASE("DependentAsync.ComplexGraphFromWorker.8threads" * doctest::timeout(300)) {
complex_graph_from_worker(8, 7);
}
TEST_CASE("DependentAsync.ComplexGraphFromWorker.16threads" * doctest::timeout(300)) {
complex_graph_from_worker(16, 10);
}
// ----------------------------------------------------------------------------
// Binary Tree
// ----------------------------------------------------------------------------
void binary_tree(unsigned W) {
size_t L = 16;
tf::Executor executor(W);
std::vector<int> data((size_t{1}<<L), 0);
std::vector<tf::AsyncTask> tasks_p, tasks_c;
std::array<tf::AsyncTask, 1> dep;
size_t task_id = 1;
// iterate all other tasks level by level
for(size_t i=0; i<L; i++) {
for(size_t n=0; n < (size_t{1} << i); n++) {
if(task_id == 1) {
tasks_c.push_back(
executor.silent_dependent_async(
[task_id, &data](){
data[task_id] = 1;
}
)
);
}
else {
dep[0] = tasks_p[n/2];
tasks_c.push_back(
executor.dependent_async(
[task_id, &data](){
data[task_id] = data[task_id/2] + 1;
},
dep.begin(), dep.end()
).first
);
}
task_id++;
}
tasks_p = std::move(tasks_c);
}
executor.wait_for_all();
task_id = 1;
for(size_t i=0; i<L; i++) {
for(size_t n=0; n < (size_t{1} << i); n++) {
REQUIRE(data[task_id] == i + 1);
//printf("data[%zu]=%d\n", task_id, data[task_id]);
task_id++;
}
}
}
TEST_CASE("DependentAsync.BinaryTree.1thread" * doctest::timeout(300)) {
binary_tree(1);
}
TEST_CASE("DependentAsync.BinaryTree.2threads" * doctest::timeout(300)) {
binary_tree(2);
}
TEST_CASE("DependentAsync.BinaryTree.3threads" * doctest::timeout(300)) {
binary_tree(3);
}
TEST_CASE("DependentAsync.BinaryTree.4threads" * doctest::timeout(300)) {
binary_tree(4);
}
TEST_CASE("DependentAsync.BinaryTree.8threads" * doctest::timeout(300)) {
binary_tree(8);
}
TEST_CASE("DependentAsync.BinaryTree.16threads" * doctest::timeout(300)) {
binary_tree(16);
}
// ----------------------------------------------------------------------------
// Linear Chain with Complete Dependencies (N choose 2)
// ----------------------------------------------------------------------------
void complete_linear_chain(unsigned W) {
tf::Executor executor0(W);
tf::Executor executor1(W);
int N = 2000;
std::vector<tf::CachelineAligned<int>> results(2*N);
std::vector<tf::AsyncTask> tasks;
// executor 0
for (int i = 0; i < N; ++i) {
if (i == 0) {
auto t = executor0.silent_dependent_async(
[&results, i](){
results[i].data = i+1;
}
);
tasks.push_back(t);
}
else {
auto t = executor0.silent_dependent_async(
[&results, i](){
results[i].data = results[i-1].data + i;
}, tasks.begin(), tasks.end()
);
tasks.push_back(t);
}
}
executor0.wait_for_all();
REQUIRE(results[0].data == 1);
for (int i = 1; i < N; ++i) {
REQUIRE(results[i].data == results[i-1].data + i);
}
tasks.clear();
// executor 1
for (int i = 0; i < N; ++i) {
if (i == 0) {
auto t = executor1.silent_dependent_async(
[&results, i, N](){
results[i+N].data = results[i-1+N].data + i;
}
);
tasks.push_back(t);
}
else {
auto t = executor1.silent_dependent_async(
[&results, i, N](){
results[i+N].data = results[i-1+N].data + i;
}, tasks.begin(), tasks.end()
);
tasks.push_back(t);
}
}
executor1.wait_for_all();
REQUIRE(results[0+N].data == results[0+N-1].data);
for (int i = 1; i < N; ++i) {
REQUIRE(results[i+N].data == results[i-1+N].data + i);
}
}
TEST_CASE("DependentAsync.CompleteLinearChain.1thread" * doctest::timeout(300)) {
complete_linear_chain(1);
}
TEST_CASE("DependentAsync.CompleteLinearChain.2threads" * doctest::timeout(300)) {
complete_linear_chain(2);
}
TEST_CASE("DependentAsync.CompleteLinearChain.4threads" * doctest::timeout(300)) {
complete_linear_chain(4);
}
TEST_CASE("DependentAsync.CompleteLinearChain.8threads" * doctest::timeout(300)) {
complete_linear_chain(8);
}
TEST_CASE("DependentAsync.CompleteLinearChain.16threads" * doctest::timeout(300)) {
complete_linear_chain(16);
}
// ----------------------------------------------------------------------------
// Parallel Graph Construction
// ----------------------------------------------------------------------------
// multiple workers to construct a pascal diagram simultaneously
// 0 1 2 3
// |/|/| /
// 4 5 6
// |/| /
// 7 8
// |/
// 9
void parallel_graph_construction(unsigned W) {
tf::Taskflow taskflow;
tf::Executor executor(W);
int L = 500;
int id = 0;
std::vector<tf::Task> tasks((1+L)*L/2);
std::vector<int> data((1+L)*L/2, -1);
std::vector<tf::AsyncTask> async_tasks((1+L)*L/2);
for(int l=L; l>=1; l--) {
for(int i=0; i<l; i++) {
int pr = id - l;
int pl = id - l - 1;
tasks[id] = taskflow.emplace([&, pr, pl, id](){
if(pl >= 0 && pr >= 0) {
REQUIRE(async_tasks[pl].empty() == false);
REQUIRE(async_tasks[pr].empty() == false);
async_tasks[id] = executor.silent_dependent_async([&, pr, pl, id](){
REQUIRE(data[pr] == pr);
REQUIRE(data[pl] == pl);
data[id] = id;
}, async_tasks[pl], async_tasks[pr]);
}
else {
async_tasks[id] = executor.silent_dependent_async([&, id](){
data[id] = id;
});
}
}).name(std::to_string(id));
if(pr >= 0) {
tasks[id].succeed(tasks[pr]);
}
if(pl >= 0) {
tasks[id].succeed(tasks[pl]);
}
++id;
}
}
executor.run(taskflow);
executor.wait_for_all();
}
TEST_CASE("DependentAsync.ParallelGraphConstruction.1thread" * doctest::timeout(300)) {
parallel_graph_construction(1);
}
TEST_CASE("DependentAsync.ParallelGraphConstruction.2threads" * doctest::timeout(300)) {
parallel_graph_construction(2);
}
TEST_CASE("DependentAsync.ParallelGraphConstruction.4threads" * doctest::timeout(300)) {
parallel_graph_construction(4);
}
TEST_CASE("DependentAsync.ParallelGraphConstruction.8threads" * doctest::timeout(300)) {
parallel_graph_construction(8);
}
TEST_CASE("DependentAsync.ParallelGraphConstruction.16threads" * doctest::timeout(300)) {
parallel_graph_construction(16);
}
// ----------------------------------------------------------------------------
// Iterative Fibonacci
// ----------------------------------------------------------------------------
std::vector<unsigned long long int> fibonacci{0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765,10946,17711,28657,46368,75025,121393,196418,317811,514229,832040,1346269,2178309,3524578,5702887,9227465,14930352,24157817,39088169,63245986,102334155,165580141,267914296,433494437,701408733,1134903170,1836311903,2971215073,4807526976,7778742049,12586269025,20365011074,32951280099,53316291173,86267571272,139583862445,225851433717,365435296162,591286729879,956722026041,1548008755920,2504730781961,4052739537881,6557470319842,10610209857723,17167680177565,27777890035288,44945570212853,72723460248141,117669030460994,190392490709135,308061521170129,498454011879264,806515533049393,1304969544928657,2111485077978050,3416454622906707,5527939700884757,8944394323791464,14472334024676221,23416728348467685,37889062373143906,61305790721611591,99194853094755497,160500643816367088,259695496911122585,420196140727489673,679891637638612258,1100087778366101931,1779979416004714189,2880067194370816120,4660046610375530309,7540113804746346429};
void iterative_fibonacci(unsigned W) {
tf::Executor executor(W);
std::vector<tf::AsyncTask> tasks;
unsigned long long int val_n_1 = 0, val_n_2 = 0;
for (int i = 0; i <= 92; ++i) {
if (i < 2) {
auto [t, fut] = executor.dependent_async([i](){ return i; });
tasks.push_back(t);
val_n_2 = val_n_1;
val_n_1 = fut.get();
}
else {
auto [t, fut] = executor.dependent_async([val_n_1, val_n_2](){
return val_n_2 + val_n_1;
}, tasks[i-1], tasks[i-2]);
tasks.push_back(t);
val_n_2 = val_n_1;
val_n_1 = fut.get();
}
REQUIRE(val_n_1 == fibonacci[i]);
}
}
TEST_CASE("DependentAsync.IterativeFibonacci.1thread" * doctest::timeout(300)) {
iterative_fibonacci(1);
}
TEST_CASE("DependentAsync.IterativeFibonacci.2threads" * doctest::timeout(300)) {
iterative_fibonacci(2);
}
TEST_CASE("DependentAsync.IterativeFibonacci.4threads" * doctest::timeout(300)) {
iterative_fibonacci(4);
}
TEST_CASE("DependentAsync.IterativeFibonacci.8threads" * doctest::timeout(300)) {
iterative_fibonacci(8);
}
// ----------------------------------------------------------------------------
// Recursive Fibonacci
// ----------------------------------------------------------------------------
void recursive_fibonacci(unsigned W) {
tf::Executor executor(W);
std::function<int(int)> fib;
fib = [&](int N) -> int {
if (N < 2) {
return N;
}
std::future<int> fu1, fu2;
tf::AsyncTask t1, t2;
std::tie(t1, fu1) = executor.dependent_async([=, &fib](){ return fib(N-1); });
std::tie(t2, fu2) = executor.dependent_async([=, &fib](){ return fib(N-2); });
executor.corun_until([&](){ return t1.is_done() && t2.is_done(); });
return fu1.get() + fu2.get();
};
for (int i = 0; i <= 11; ++i) {
auto [tn, fun] = executor.dependent_async([=, &fib]() { return fib(i); });
REQUIRE(fun.get() == fibonacci[i]);
}
}
TEST_CASE("DependentAsync.RecursiveFibonacci.1thread" * doctest::timeout(300)) {
recursive_fibonacci(1);
}
TEST_CASE("DependentAsync.RecursiveFibonacci.2threads" * doctest::timeout(300)) {
recursive_fibonacci(2);
}
TEST_CASE("DependentAsync.RecursiveFibonacci.4threads" * doctest::timeout(300)) {
recursive_fibonacci(4);
}
TEST_CASE("DependentAsync.RecursiveFibonacci.8threads" * doctest::timeout(300)) {
recursive_fibonacci(8);
}
// ----------------------------------------------------------------------------
// Mixed Algorithm with Dependent Async
// ----------------------------------------------------------------------------
void mixed_algorithms_with_dependent_async(unsigned W) {
size_t N = 65536;
tf::Executor executor(W);
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