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Implement GPU predict leaf. (#6187)

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This commit is contained in:
Jiaming Yuan
2020-11-11 17:33:47 +08:00
committed by GitHub
parent 7f101d1b33
commit 8a17610666
12 changed files with 252 additions and 42 deletions
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24
tests/cpp/predictor/test_gpu_predictor.cu
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@@ -190,6 +190,7 @@ TEST(GPUPredictor, ShapStump) {
EXPECT_EQ(phis[4], 0.0);
EXPECT_EQ(phis[5], param.base_score);
}
TEST(GPUPredictor, Shap) {
LearnerModelParam param;
param.num_feature = 1;
@@ -224,5 +225,28 @@ TEST(GPUPredictor, Shap) {
TEST(GPUPredictor, CategoricalPrediction) {
TestCategoricalPrediction("gpu_predictor");
}
TEST(GPUPredictor, PredictLeafBasic) {
size_t constexpr kRows = 5, kCols = 5;
auto dmat = RandomDataGenerator(kRows, kCols, 0).Device(0).GenerateDMatrix();
auto lparam = CreateEmptyGenericParam(GPUIDX);
std::unique_ptr<Predictor> gpu_predictor =
std::unique_ptr<Predictor>(Predictor::Create("gpu_predictor", &lparam));
gpu_predictor->Configure({});
LearnerModelParam param;
param.num_feature = kCols;
param.base_score = 0.0;
param.num_output_group = 1;
gbm::GBTreeModel model = CreateTestModel(&param);
HostDeviceVector<float> leaf_out_predictions;
gpu_predictor->PredictLeaf(dmat.get(), &leaf_out_predictions, model);
auto const& h_leaf_out_predictions = leaf_out_predictions.ConstHostVector();
for (auto v : h_leaf_out_predictions) {
ASSERT_EQ(v, 0);
}
}
} // namespace predictor
} // namespace xgboost