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5 Commits

Author SHA1 Message Date
Jiaming Yuan
daf77ca7b7
Enable running objectives with 0 GPU. (#3878) 
* Enable running objectives with 0 GPU.

* Enable 0 GPU for objectives.
* Add doc for GPU objectives.
* Fix some objectives defaulted to running on all GPUs.
 2018-11-13 20:19:59 +13:00
Jiaming Yuan
f1275f52c1
Fix specifying gpu_id, add tests. (#3851) 
* Rewrite gpu_id related code.

* Remove normalised/unnormalised operatios.
* Address difference between `Index' and `Device ID'.
* Modify doc for `gpu_id'.
* Better LOG for GPUSet.
* Check specified n_gpus.
* Remove inappropriate `device_idx' term.
* Clarify GpuIdType and size_t.
 2018-11-06 18:17:53 +13:00
Andy Adinets
2a59ff2f9b Multi-GPU support in GPUPredictor. (#3738) 
* Multi-GPU support in GPUPredictor.

- GPUPredictor is multi-GPU
- removed DeviceMatrix, as it has been made obsolete by using HostDeviceVector in DMatrix

* Replaced pointers with spans in GPUPredictor.

* Added a multi-GPU predictor test.

* Fix multi-gpu test.

* Fix n_rows < n_gpus.

* Reinitialize shards when GPUSet is changed.
* Tests range of data.

* Remove commented code.

* Remove commented code.
 2018-10-23 22:59:11 -07:00
Rory Mitchell
f00fd87b36
Address #2754, accuracy issues with gpu_hist (#3793) 
* Address windows compilation error

* Do not allow divide by zero in weight calculation

* Update tests
 2018-10-15 17:50:31 +13:00
trivialfis
d594b11f35 Implement transform to reduce CPU/GPU code duplication. (#3643) 
* Implement Transform class.
* Add tests for softmax.
* Use Transform in regression, softmax and hinge objectives, except for Cox.
* Mark old gpu objective functions deprecated.
* static_assert for softmax.
* Split up multi-gpu tests.
 2018-10-02 15:06:21 +13:00