e6088366df
* Add Python iterator interface. * Add tests. * Add demo. * Add documents. * Handle empty dataset.
34 lines
808 B
Plaintext
34 lines
808 B
Plaintext
/*!
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* Copyright 2021 XGBoost contributors
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*/
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#include "sparse_page_source.h"
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#include "proxy_dmatrix.cuh"
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#include "simple_dmatrix.cuh"
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namespace xgboost {
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namespace data {
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namespace detail {
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size_t NSamplesDevice(DMatrixProxy *proxy) {
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return Dispatch(proxy, [](auto const &value) { return value.NumRows(); });
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}
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size_t NFeaturesDevice(DMatrixProxy *proxy) {
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return Dispatch(proxy, [](auto const &value) { return value.NumCols(); });
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}
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} // namespace detail
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void DevicePush(DMatrixProxy* proxy, float missing, SparsePage* page) {
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auto device = proxy->DeviceIdx();
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if (device < 0) {
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device = dh::CurrentDevice();
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}
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CHECK_GE(device, 0);
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Dispatch(proxy, [&](auto const &value) {
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CopyToSparsePage(value, device, missing, page);
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});
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}
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} // namespace data
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} // namespace xgboost
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