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Porting elementwise metrics to GPU. (#3952)

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* Port elementwise metrics to GPU.

* All elementwise metrics are converted to static polymorphic.
* Create a reducer for metrics reduction.
* Remove const of Metric::Eval to accommodate CubMemory.
This commit is contained in:
Jiaming Yuan
2018-12-01 18:46:45 +13:00
committed by GitHub
parent a9d684db18
commit 48dddfd635
14 changed files with 605 additions and 279 deletions
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16
tests/cpp/metric/test_rank_metric.cc
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@@ -88,7 +88,9 @@ TEST(Metric, NDCG) {
xgboost::Metric * metric = xgboost::Metric::Create("ndcg");
ASSERT_STREQ(metric->Name(), "ndcg");
EXPECT_ANY_THROW(GetMetricEval(metric, {0, 1}, {}));
EXPECT_NEAR(GetMetricEval(metric, {}, {}), 1, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
xgboost::HostDeviceVector<xgboost::bst_float>{},
{}), 1, 1e-10);
EXPECT_NEAR(GetMetricEval(metric, {0, 1}, {0, 1}), 1, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
{0.1f, 0.9f, 0.1f, 0.9f},
@@ -107,7 +109,9 @@ TEST(Metric, NDCG) {
delete metric;
metric = xgboost::Metric::Create("ndcg@-");
ASSERT_STREQ(metric->Name(), "ndcg@-");
EXPECT_NEAR(GetMetricEval(metric, {}, {}), 0, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
xgboost::HostDeviceVector<xgboost::bst_float>{},
{}), 0, 1e-10);
EXPECT_NEAR(GetMetricEval(metric, {0, 1}, {0, 1}), 1, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
{0.1f, 0.9f, 0.1f, 0.9f},
@@ -134,12 +138,16 @@ TEST(Metric, MAP) {
{0.1f, 0.9f, 0.1f, 0.9f},
{ 0, 0, 1, 1}),
0.5f, 0.001f);
EXPECT_NEAR(GetMetricEval(metric, {}, {}), 1, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
xgboost::HostDeviceVector<xgboost::bst_float>{},
std::vector<xgboost::bst_float>{}), 1, 1e-10);
delete metric;
metric = xgboost::Metric::Create("map@-");
ASSERT_STREQ(metric->Name(), "map@-");
EXPECT_NEAR(GetMetricEval(metric, {}, {}), 0, 1e-10);
EXPECT_NEAR(GetMetricEval(metric,
xgboost::HostDeviceVector<xgboost::bst_float>{},
{}), 0, 1e-10);
delete metric;
metric = xgboost::Metric::Create("map@2");