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Device dmatrix (#5420)

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This commit is contained in:
Rory Mitchell
2020-03-28 14:42:21 +13:00
committed by GitHub
parent 780de49ddb
commit 13b10a6370
24 changed files with 915 additions and 310 deletions
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31
src/common/hist_util.cu
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@@ -338,31 +338,6 @@ HistogramCuts DeviceSketch(int device, DMatrix* dmat, int max_bins,
return cuts;
}
struct IsValidFunctor : public thrust::unary_function<Entry, bool> {
explicit IsValidFunctor(float missing) : missing(missing) {}
float missing;
__device__ bool operator()(const data::COOTuple& e) const {
if (common::CheckNAN(e.value) || e.value == missing) {
return false;
}
return true;
}
__device__ bool operator()(const Entry& e) const {
if (common::CheckNAN(e.fvalue) || e.fvalue == missing) {
return false;
}
return true;
}
};
// Thrust version of this function causes error on Windows
template <typename ReturnT, typename IterT, typename FuncT>
thrust::transform_iterator<FuncT, IterT, ReturnT> MakeTransformIterator(
IterT iter, FuncT func) {
return thrust::transform_iterator<FuncT, IterT, ReturnT>(iter, func);
}
template <typename AdapterT>
void ProcessBatch(AdapterT* adapter, size_t begin, size_t end, float missing,
SketchContainer* sketch_container, int num_cuts) {
@@ -372,10 +347,10 @@ void ProcessBatch(AdapterT* adapter, size_t begin, size_t end, float missing,
auto &batch = adapter->Value();
// Enforce single batch
CHECK(!adapter->Next());
auto batch_iter = MakeTransformIterator<data::COOTuple>(
auto batch_iter = dh::MakeTransformIterator<data::COOTuple>(
thrust::make_counting_iterator(0llu),
[=] __device__(size_t idx) { return batch.GetElement(idx); });
auto entry_iter = MakeTransformIterator<Entry>(
auto entry_iter = dh::MakeTransformIterator<Entry>(
thrust::make_counting_iterator(0llu), [=] __device__(size_t idx) {
return Entry(batch.GetElement(idx).column_idx,
batch.GetElement(idx).value);
@@ -385,7 +360,7 @@ void ProcessBatch(AdapterT* adapter, size_t begin, size_t end, float missing,
0);
auto d_column_sizes_scan = column_sizes_scan.data().get();
IsValidFunctor is_valid(missing);
data::IsValidFunctor is_valid(missing);
dh::LaunchN(adapter->DeviceIdx(), end - begin, [=] __device__(size_t idx) {
auto e = batch_iter[begin + idx];
if (is_valid(e)) {