// TODO(tb): this is disabled because the double ReduceBy creates some deadlock
// in destruction of Channels. We have to fix that later.
TEST(Stage, DISABLED_AdditionalChildReferences) {
std::function<void(Context&)> start_func =
[](Context& ctx) {
auto integers = Generate(
ctx,
[](const size_t& index) {
return static_cast<int>(index) + 1;
},
16);
auto duplicate_elements = [](int in, auto emit) {
emit(in);
emit(in);
};
auto modulo_two = [](int in) {
return (in % 2);
};
auto add_function = [](int in1, int in2) {
return in1 + in2;
};
// Create a new DIA references to Generate
auto doubles = integers.FlatMap(duplicate_elements);
// Create a child references to Generate
// Create a new DIA reference to LOpNode
DIA<int> quadruples = integers.FlatMap(duplicate_elements).Cache();
// Create a child reference to LOpNode
DIA<int> octuples = quadruples.ReduceBy(modulo_two, add_function).Cache();
// Create a child reference to LOpNode
DIA<int> octuples_second = quadruples.ReduceBy(modulo_two, add_function).Cache();
// Trigger execution
std::vector<int> out_vec = octuples.AllGather();
// 2x DIA reference + 1x child reference
ASSERT_EQ(integers.node_refcount(), 3u);
ASSERT_EQ(doubles.node_refcount(), 3u);
// 1x DIA reference + 2x child reference
ASSERT_EQ(quadruples.node_refcount(), 3u);
// 1x DIA reference + 0x child reference
ASSERT_EQ(octuples.node_refcount(), 1u);
// 1x DIA reference + 0x child reference
ASSERT_EQ(octuples_second.node_refcount(), 1u);
};
api::RunLocalTests(start_func);
}
TEST(Graph, WhileLoop) {
std::function<void(Context&)> start_func =
[](Context& ctx) {
auto integers = Generate(
ctx,
[](const size_t& index) -> size_t {
return index;
},
16);
auto flatmap_duplicate = [](size_t in, auto emit) {
emit(in);
emit(in);
};
auto map_multiply = [](size_t in) {
return 2 * in;
};
DIA<size_t> squares = integers.Collapse();
size_t sum = 0;
// run loop four times, inflating DIA of 16 items -> 256
while (sum < 64) {
auto pairs = squares.FlatMap(flatmap_duplicate);
auto multiplied = pairs.Map(map_multiply);
squares = multiplied.Cache();
sum = squares.Size();
}
std::vector<size_t> out_vec = squares.AllGather();
ASSERT_EQ(64u, out_vec.size());
ASSERT_EQ(64u, squares.Size());
ctx.stats_graph().BuildLayout("loop.out");
};
api::RunLocalTests(start_func);
}
TEST(ZipNode, TwoDisbalancedStringArrays) {
// first DIA is heavily balanced to the first workers, second DIA is
// balanced to the last workers.
std::function<void(Context&)> start_func =
[](Context& ctx) {
// generate random strings with 10..20 characters
auto input_gen = Generate(
ctx,
[](size_t index) -> std::string {
std::default_random_engine rng(
123456 + static_cast<unsigned>(index));
std::uniform_int_distribution<size_t> length(10, 20);
rng(); // skip one number
return common::RandomString(
length(rng), rng, "abcdefghijklmnopqrstuvwxyz")
+ std::to_string(index);
},
test_size);
DIA<std::string> input = input_gen.Cache();
std::vector<std::string> vinput = input.AllGather();
ASSERT_EQ(test_size, vinput.size());
// Filter out strings that start with a-e
auto input1 = input.Filter(
[](const std::string& str) { return str[0] <= 'e'; });
// Filter out strings that start with w-z
auto input2 = input.Filter(
[](const std::string& str) { return str[0] >= 'w'; });
// zip
auto zip_result = input1.Zip(
input2, [](const std::string& a, const std::string& b) {
return a + b;
});
// check result
std::vector<std::string> res = zip_result.AllGather();
// recalculate result locally
std::vector<std::string> check;
{
std::vector<std::string> v1, v2;
for (size_t index = 0; index < vinput.size(); ++index) {
const std::string& s1 = vinput[index];
if (s1[0] <= 'e') v1.push_back(s1);
if (s1[0] >= 'w') v2.push_back(s1);
}
ASSERT_EQ(v1, input1.AllGather());
ASSERT_EQ(v2, input2.AllGather());
for (size_t i = 0; i < std::min(v1.size(), v2.size()); ++i) {
check.push_back(v1[i] + v2[i]);
// sLOG1 << check.back();
}
}
for (size_t i = 0; i != res.size(); ++i) {
sLOG0 << res[i] << " " << check[i] << (res[i] == check[i]);
}
ASSERT_EQ(check.size(), res.size());
ASSERT_EQ(check, res);
};
api::RunLocalTests(start_func);
}
