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7 Commits

Author SHA1 Message Date
Jiaming Yuan
61dd854a52
[EM] Refactor GPU histogram builder. (#10764) 
- Expose the maximum number of cached nodes to be consistent with the CPU implementation. Also easier for testing.
- Extract the subtraction trick for easier testing.
- Split up the `GradientQuantiser` to avoid circular dependency.
 2024-08-30 02:39:14 +08:00
Jiaming Yuan
06bdc15e9b
[coll] Pass context to various functions. (#9772) 
* [coll] Pass context to various functions.

In the future, the `Context` object would be required for collective operations, this PR
passes the context object to some required functions to prepare for swapping out the
implementation.
 2023-11-08 09:54:05 +08:00
Jiaming Yuan
1caa93221a
Use realloc for histogram cache and expose the cache limit. (#9455) 2023-08-10 14:05:27 +08:00
Jiaming Yuan
54029a59af
Bound the size of the histogram cache. (#9440) 
- A new histogram collection with a limit in size.
- Unify histogram building logic between hist, multi-hist, and approx.
 2023-08-08 03:21:26 +08:00
Jiaming Yuan
e93a274823
Small cleanup for histogram routines. (#9427) 
* Small cleanup for histogram routines.

- Extract hist train param from GPU hist.
- Make histogram const after construction.
- Unify parameter names.
 2023-08-02 18:28:26 +08:00
Jiaming Yuan
1b6538b4e5
[breaking] Drop single precision histogram (#7892) 
Co-authored-by: Philip Hyunsu Cho <chohyu01@cs.washington.edu>
 2022-05-13 19:54:55 +08:00
Jiaming Yuan
8e619010d0
Extract CPUExpandEntry and HistParam. (#7321) 
* Remove kRootNid.
* Check for empty hessian.
 2021-10-17 14:22:25 +08:00