Philip Hyunsu Cho b50bc2c1d4
Add multi-GPU unit test environment (#3741)
* Add multi-GPU unit test environment

* Better assertion message

* Temporarily disable failing test

* Distinguish between multi-GPU and single-GPU CPP tests

* Consolidate Python tests. Use attributes to distinguish multi-GPU Python tests from single-CPU counterparts
2018-09-29 11:20:58 -07:00
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