Adding missing pieces to sync_wait, adding run_loop

[hkaiser]

• implement execution::run_loop
• implement execution::forwarding_sender_query
• adding missing pieces to make_future, start_detached, sync_wait (make it work with run_loop)
• flyby: refine execution::forwarding_env_query and execution::forwarding_scheduler_query
• flyby: fixing get_completion_scheduler handling for let_xxx, schedule_from, partial algorithm
• flyby: properly constraining forwarding env, sender, and scheduler queries

[StellarBot]

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Datetime	2022-05-31T12:57:29+00:00	2022-08-09T16:07:10+00:00
HPX Commit	d5655f89770ba953e8de3ceb349567d5fcb74a95	acfe0f6f6e8a333b1d92c11e58a01ed44df9efc1
Hostname	nid01193	nid00041
Datetime	2022-05-31T15:13:01.357969+02:00	2022-08-09T18:30:14.987353+02:00
Clustername	daint	daint
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
Envfile

Comparison

BENCHMARK	NO-EXECUTOR
Future Overhead - Create Thread Hierarchical - Latch	(=)

Info

Property	Before	After
HPX Datetime	2022-05-31T12:57:29+00:00	2022-08-09T16:07:10+00:00
HPX Commit	d5655f89770ba953e8de3ceb349567d5fcb74a95	acfe0f6f6e8a333b1d92c11e58a01ed44df9efc1
Hostname	nid01193	nid00041
Datetime	2022-05-31T15:13:18.026239+02:00	2022-08-09T18:30:31.694307+02:00
Clustername	daint	daint
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
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 Datetime	2021-11-10T19:14:21+00:00	2022-08-09T16:07:10+00:00
HPX Commit	71d8dbe40b737be02ea734f9d98fcc0b1e21f01a	acfe0f6f6e8a333b1d92c11e58a01ed44df9efc1
Hostname	nid00120	nid00041
Datetime	2021-11-10T20:28:18.266961+01:00	2022-08-09T18:30:47.699804+02:00
Clustername	daint	daint
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
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]

retest lsu

[hkaiser]

bors merge

[bors[bot]]

Build succeeded:

• Bors