Jiaming Yuan 29b7fea572
Optimize cpu sketch allreduce for sparse data. (#6009)
* Bypass RABIT serialization reducer and use custom allgather based merging.
2020-08-19 10:03:45 +08:00
..
2019-08-19 16:51:40 +12:00
2020-08-18 19:55:41 +08:00
2020-08-18 19:55:41 +08:00
2020-08-12 01:26:02 -07:00