Rory Mitchell
00465d243d
Optimisations for gpu_hist. ( #4248 )
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* Optimisations for gpu_hist.
* Use streams to overlap operations.
* ColumnSampler now uses HostDeviceVector to prevent repeatedly copying feature vectors to the device.
2019-03-20 13:30:06 +13:00
Andy Adinets
42bf90eb8f
Column sampling at individual nodes (splits). ( #3971 )
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* Column sampling at individual nodes (splits).
* Documented colsample_bynode parameter.
- also updated documentation for colsample_by* parameters
* Updated documentation.
* GetFeatureSet() returns shared pointer to std::vector.
* Sync sampled columns across multiple processes.
2018-12-14 22:37:35 +08:00
Rory Mitchell
78bea0d204
Add google test for a column sampling, restore metainfo tests ( #3637 )
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* Add google test for a column sampling, restore metainfo tests
* Update metainfo test for visual studio
* Fix multi-GPU bug introduced in #3635
2018-08-28 16:10:26 +12:00
