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Author SHA1 Message Date
Jiaming Yuan f8ca2960fc Use nccl group calls to prevent from dead lock. (#4113) 
* launch all reduce sequentially.
* Fix gpu_exact test memory leak.
 2019-02-08 06:12:39 +08:00
Jiaming Yuan 017c97b8ce Clean up training code. (#3825) 
* Remove GHistRow, GHistEntry, GHistIndexRow.
* Remove kSimpleStats.
* Remove CheckInfo, SetLeafVec in GradStats and in SKStats.
* Clean up the GradStats.
* Cleanup calcgain.
* Move LossChangeMissing out of common.
* Remove [] operator from GHistIndexBlock.
 2019-02-07 14:22:13 +08:00
Jiaming Yuan 8905df4a18 Perform clang-tidy on both cpp and cuda source. (#4034) 
* Basic script for using compilation database.

* Add `GENERATE_COMPILATION_DATABASE' to CMake.
* Rearrange CMakeLists.txt.
* Add basic python clang-tidy script.
* Remove modernize-use-auto.
* Add clang-tidy to Jenkins
* Refine logic for correct path detection

In Jenkins, the project root is of form /home/ubuntu/workspace/xgboost_PR-XXXX

* Run clang-tidy in CUDA 9.2 container
* Use clang_tidy container
 2019-02-05 16:07:43 +08:00
Jiaming Yuan 1088dff42c Prevent training without setting up caches. (#4066) 
* Prevent training without setting up caches.

* Add warning for internal functions.
* Check number of features.

* Address reviewer's comment.
 2019-02-03 01:03:29 -08:00
Jiaming Yuan 4fac9874e0 Check booster for dart in feature importance. (#4073) 
* Check booster for dart in feature importance.
 2019-01-22 16:03:54 +08:00
Jiaming Yuan 301cef4638 Correct JVM CMake GPU flag. (#4071) 2019-01-21 20:36:38 +08:00
Jiaming Yuan 55bc149efb Fix sparse page segfault. (#4040) 
* Remove usage of raw pointers in SparsePageSource.
 2019-01-03 23:40:40 +08:00
Jiaming Yuan 1f022929f4 Use Span in gpu coordinate. (#4029) 
* Use Span in gpu coordinate.

* Use Span in device code.
* Fix shard size calculation.
  - Use lower_bound instead of upper_bound.
* Check empty devices.
 2019-01-02 11:32:43 +08:00