Deprecate hpx::parallel::reduce_by_key in favor of hpx::experimental::reduce_by_key

[dimitraka]

• Fix typos
• Move functions to experimental namespace

[StellarBot]

Performance test report

HPX Performance

Comparison

BENCHMARK	FORK_JOIN_EXECUTOR	PARALLEL_EXECUTOR	SCHEDULER_EXECUTOR
For Each	(=)	(=)	(=)

Info

Property	Before	After
HPX Commit	d5655f8	c15b5fc
HPX Datetime	2022-05-31T12:57:29+00:00	2022-12-08T15:58:30+00:00
Compiler	/apps/daint/SSL/HPX/packages/llvm-11.0.0/bin/clang++ 11.0.0	/apps/daint/SSL/HPX/packages/llvm-11.0.0/bin/clang++ 11.0.0
Datetime	2022-05-31T15:13:01.357969+02:00	2022-12-08T17:11:03.279362+01:00
Clustername	daint	daint
Hostname	nid01193	nid01214
Envfile

Comparison

BENCHMARK	NO-EXECUTOR
Future Overhead - Create Thread Hierarchical - Latch	-

Info

Property	Before	After
HPX Commit	d5655f8	c15b5fc
HPX Datetime	2022-05-31T12:57:29+00:00	2022-12-08T15:58:30+00:00
Compiler	/apps/daint/SSL/HPX/packages/llvm-11.0.0/bin/clang++ 11.0.0	/apps/daint/SSL/HPX/packages/llvm-11.0.0/bin/clang++ 11.0.0
Datetime	2022-05-31T15:13:18.026239+02:00	2022-12-08T17:11:20.309500+01:00
Clustername	daint	daint
Hostname	nid01193	nid01214
Envfile

Comparison

BENCHMARK	FORK_JOIN_EXECUTOR_DEFAULT_FORK_JOIN_POLICY_ALLOCATOR	PARALLEL_EXECUTOR_DEFAULT_PARALLEL_POLICY_ALLOCATOR	SCHEDULER_EXECUTOR_DEFAULT_SCHEDULER_EXECUTOR_ALLOCATOR
Stream Benchmark - Add	(=)	(=)	(=)
Stream Benchmark - Scale	(=)	(=)	(=)
Stream Benchmark - Triad	(=)	(=)	(=)
Stream Benchmark - Copy	(=)	(=)	(=)

Info

Property	Before	After
HPX Commit	71d8dbe	c15b5fc
HPX Datetime	2021-11-10T19:14:21+00:00	2022-12-08T15:58:30+00:00
Compiler	/apps/daint/SSL/HPX/packages/llvm-11.0.0/bin/clang++ 11.0.0	/apps/daint/SSL/HPX/packages/llvm-11.0.0/bin/clang++ 11.0.0
Datetime	2021-11-10T20:28:18.266961+01:00	2022-12-08T17:11:35.725795+01:00
Clustername	daint	daint
Hostname	nid00120	nid01214
Envfile

Explanation of Symbols

Symbol	MEANING
=	No performance change (confidence interval within ±1%)
(=)	Probably no performance change (confidence interval within ±2%)
(+)/(-)	Very small performance improvement/degradation (≤1%)
+/-	Small performance improvement/degradation (≤5%)
++/--	Large performance improvement/degradation (≤10%)
+++/---	Very large performance improvement/degradation (>10%)
?	Probably no change, but quite large uncertainty (confidence interval with ±5%)
??	Unclear result, very large uncertainty (±10%)
???	Something unexpected…

[hkaiser]

LGTM, thanks!

[hkaiser]

@dimitraka Could you fix the clang-format issues, please

[hkaiser]

LGTM, thanks!

[hkaiser]

LGTM, thanks!

[hkaiser]

bors merge

[bors]

Build succeeded:

• Bors