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Thread safe, inplace prediction. (#5389)

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Normal prediction with DMatrix is now thread safe with locks.  Added inplace prediction is lock free thread safe.

When data is on device (cupy, cudf), the returned data is also on device.

* Implementation for numpy, csr, cudf and cupy.

* Implementation for dask.

* Remove sync in simple dmatrix.
This commit is contained in:
Jiaming Yuan
2020-03-30 15:35:28 +08:00
committed by GitHub
parent 7f980e9f83
commit 6601a641d7
25 changed files with 1217 additions and 167 deletions
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35
tests/cpp/helpers.cc
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@@ -177,9 +177,8 @@ void RandomDataGenerator::GenerateDense(HostDeviceVector<float> *out) const {
}
}
void RandomDataGenerator::GenerateArrayInterface(
HostDeviceVector<float> *storage, std::string *out) const {
CHECK(out);
Json RandomDataGenerator::ArrayInterfaceImpl(HostDeviceVector<float> *storage,
size_t rows, size_t cols) const {
this->GenerateDense(storage);
Json array_interface {Object()};
array_interface["data"] = std::vector<Json>(2);
@@ -187,13 +186,37 @@ void RandomDataGenerator::GenerateArrayInterface(
array_interface["data"][1] = Boolean(false);
array_interface["shape"] = std::vector<Json>(2);
array_interface["shape"][0] = rows_;
array_interface["shape"][1] = cols_;
array_interface["shape"][0] = rows;
array_interface["shape"][1] = cols;
array_interface["typestr"] = String("<f4");
array_interface["version"] = 1;
return array_interface;
}
Json::Dump(array_interface, out);
std::string RandomDataGenerator::GenerateArrayInterface(
HostDeviceVector<float> *storage) const {
auto array_interface = this->ArrayInterfaceImpl(storage, rows_, cols_);
std::string out;
Json::Dump(array_interface, &out);
return out;
}
std::string RandomDataGenerator::GenerateColumnarArrayInterface(
std::vector<HostDeviceVector<float>> *data) const {
CHECK(data);
CHECK_EQ(data->size(), cols_);
auto& storage = *data;
Json arr { Array() };
for (size_t i = 0; i < cols_; ++i) {
auto column = this->ArrayInterfaceImpl(&storage[i], rows_, 1);
get<Array>(arr).emplace_back(column);
}
std::string out;
Json::Dump(arr, &out);
return out;
}
void RandomDataGenerator::GenerateCSR(