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
..
2020-08-18 19:55:41 +08:00
2020-07-03 07:49:53 +08:00
2020-06-16 12:45:59 +12:00
2020-08-18 19:55:41 +08:00