2 Commits

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	9897b5042f	Use Span in GPU exact updater. (#4020) ... * Use Span in GPU exact updater. * Add a small test.	2018-12-26 12:44:46 +08:00