Support CPU input for device QuantileDMatrix. (#8136)

- Copy `GHistIndexMatrix` to `Ellpack` when needed.
2022-08-11 21:21:26 +08:00
parent 36e7c5364d
commit 16bca5d4a1
11 changed files with 220 additions and 19 deletions
--- a/src/data/gradient_index.cc
+++ b/src/data/gradient_index.cc
@@ -66,6 +66,7 @@ GHistIndexMatrix::GHistIndexMatrix(MetaInfo const &info, common::HistogramCuts &
      max_num_bins(max_bin_per_feat),
      isDense_{info.num_col_ * info.num_row_ == info.num_nonzero_} {}

+
 GHistIndexMatrix::~GHistIndexMatrix() = default;

 void GHistIndexMatrix::PushBatch(SparsePage const &batch, common::Span<FeatureType const> ft,