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Extract Sketch Entry from hist maker. (#7503)

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* Extract Sketch Entry from hist maker.

* Add a new sketch container for sorted inputs.
* Optimize bin search.
This commit is contained in:
Jiaming Yuan
2021-12-18 05:36:56 +08:00
committed by GitHub
parent b4a1236cfc
commit 9ab73f737e
15 changed files with 393 additions and 217 deletions
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6
src/data/simple_dmatrix.cc
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@@ -94,10 +94,12 @@ BatchSet<GHistIndexMatrix> SimpleDMatrix::GetGradientIndex(const BatchParam& par
if (!(batch_param_ != BatchParam{})) {
CHECK(param != BatchParam{}) << "Batch parameter is not initialized.";
}
if (!gradient_index_ || (batch_param_ != param && param != BatchParam{}) || param.regen) {
if (!gradient_index_ || (batch_param_ != param && param != BatchParam{}) || param.regen) {
CHECK_GE(param.max_bin, 2);
CHECK_EQ(param.gpu_id, -1);
gradient_index_.reset(new GHistIndexMatrix(this, param.max_bin, param.hess));
// Used only by approx.
auto sorted_sketch = param.regen;
gradient_index_.reset(new GHistIndexMatrix(this, param.max_bin, sorted_sketch, param.hess));
batch_param_ = param;
CHECK_EQ(batch_param_.hess.data(), param.hess.data());
}