Adapt remaining HPX Modules to C++20 modules by hkaiser · Pull Request #7289 · TheHPXProject/hpx

hkaiser · 2026-05-22T15:01:42Z

This PR includes adapting:

runtime_distributed
segmented_algorithms
checkpoint
collectives
compute
init_runtime

Fixes #6014

codacy-production · 2026-05-22T15:04:56Z

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 complexity · -54 duplication

Metric Results

Complexity 0

Duplication -54

View in Codacy

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StellarBot · 2026-05-25T05:56:01Z

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`acce07b`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-25T03:10:49+00:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Clustername	rostam	rostam
Datetime	2026-03-09T09:15:24.034803-05:00	2026-05-25T00:52:46.472379-05:00
Envfile
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`acce07b`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-25T03:10:49+00:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Clustername	rostam	rostam
Datetime	2026-03-09T09:17:15.638328-05:00	2026-05-25T00:54:50.635149-05:00
Envfile
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8

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	`ba89f5d`	`acce07b`
HPX Datetime	2026-03-09T18:50:37+00:00	2026-05-25T03:10:49+00:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Clustername	rostam	rostam
Datetime	2026-03-09T17:49:10.837937-05:00	2026-05-25T00:55:35.940852-05:00
Envfile
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8

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…

StellarBot · 2026-05-25T12:10:07Z

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`b1b0a39`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-25T11:59:26+00:00
Clustername	rostam	rostam
Datetime	2026-03-09T09:15:24.034803-05:00	2026-05-25T07:06:52.377123-05:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`b1b0a39`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-25T11:59:26+00:00
Clustername	rostam	rostam
Datetime	2026-03-09T09:17:15.638328-05:00	2026-05-25T07:08:59.881136-05:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
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	`ba89f5d`	`b1b0a39`
HPX Datetime	2026-03-09T18:50:37+00:00	2026-05-25T11:59:26+00:00
Clustername	rostam	rostam
Datetime	2026-03-09T17:49:10.837937-05:00	2026-05-25T07:09:44.963227-05:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
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…

StellarBot · 2026-05-25T18:35:41Z

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-25T16:24:46+00:00
HPX Commit	`0eeca86`	`7fefb31`
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile
Clustername	rostam	rostam
Datetime	2026-03-09T09:15:24.034803-05:00	2026-05-25T13:32:08.570650-05:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu

Comparison

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

Info

Property	Before	After
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-25T16:24:46+00:00
HPX Commit	`0eeca86`	`7fefb31`
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile
Clustername	rostam	rostam
Datetime	2026-03-09T09:17:15.638328-05:00	2026-05-25T13:34:16.080847-05:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu

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	2026-03-09T18:50:37+00:00	2026-05-25T16:24:46+00:00
HPX Commit	`ba89f5d`	`7fefb31`
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile
Clustername	rostam	rostam
Datetime	2026-03-09T17:49:10.837937-05:00	2026-05-25T13:35:01.409791-05:00
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu

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…

StellarBot · 2026-05-26T01:31:12Z

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-26T01:18:13+00:00
HPX Commit	`0eeca86`	`5b0275d`
Clustername	rostam	rostam
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T09:15:24.034803-05:00	2026-05-25T20:27:51.098258-05:00

Comparison

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

Info

Property	Before	After
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-26T01:18:13+00:00
HPX Commit	`0eeca86`	`5b0275d`
Clustername	rostam	rostam
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T09:17:15.638328-05:00	2026-05-25T20:29:55.262233-05:00

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	2026-03-09T18:50:37+00:00	2026-05-26T01:18:13+00:00
HPX Commit	`ba89f5d`	`5b0275d`
Clustername	rostam	rostam
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Envfile
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T17:49:10.837937-05:00	2026-05-25T20:30:40.694994-05:00

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…

StellarBot · 2026-05-26T14:50:16Z

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`e793371`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-26T14:37:52+00:00
Envfile
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T09:15:24.034803-05:00	2026-05-26T09:47:01.138336-05:00
Clustername	rostam	rostam
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`e793371`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-26T14:37:52+00:00
Envfile
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T09:17:15.638328-05:00	2026-05-26T09:49:08.476773-05:00
Clustername	rostam	rostam
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8

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	`ba89f5d`	`e793371`
HPX Datetime	2026-03-09T18:50:37+00:00	2026-05-26T14:37:52+00:00
Envfile
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T17:49:10.837937-05:00	2026-05-26T09:49:53.627917-05:00
Clustername	rostam	rostam
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8

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…

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

StellarBot · 2026-05-26T23:16:20Z

Performance test report

HPX Performance

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`ed96517`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-26T23:05:00+00:00
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Clustername	rostam	rostam
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T09:15:24.034803-05:00	2026-05-26T18:12:36.111291-05:00
Envfile

Comparison

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

Info

Property	Before	After
HPX Commit	`0eeca86`	`ed96517`
HPX Datetime	2026-03-09T14:08:29+00:00	2026-05-26T23:05:00+00:00
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Clustername	rostam	rostam
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T09:17:15.638328-05:00	2026-05-26T18:14:44.004458-05:00
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	`ba89f5d`	`ed96517`
HPX Datetime	2026-03-09T18:50:37+00:00	2026-05-26T23:05:00+00:00
Compiler	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8	/opt/apps/llvm/18.1.8/bin/clang++ 18.1.8
Clustername	rostam	rostam
Hostname	medusa08.rostam.cct.lsu.edu	medusa08.rostam.cct.lsu.edu
Datetime	2026-03-09T17:49:10.837937-05:00	2026-05-26T18:15:29.264558-05:00
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 added this to the 2.0.0 milestone May 22, 2026

hkaiser added type: enhancement type: compatibility issue category: modules labels May 22, 2026

hkaiser force-pushed the cpp_modules branch 19 times, most recently from 6ddcf60 to 6372aee Compare May 25, 2026 03:10

hkaiser force-pushed the cpp_modules branch from 6372aee to 86e2513 Compare May 25, 2026 11:59

hkaiser force-pushed the cpp_modules branch 2 times, most recently from fc054d8 to 32c4684 Compare May 25, 2026 16:24

hkaiser force-pushed the cpp_modules branch 7 times, most recently from 86ec3bd to 3a277b0 Compare May 26, 2026 01:18

hkaiser force-pushed the cpp_modules branch from 3a277b0 to 2a76018 Compare May 26, 2026 14:37

hkaiser added 8 commits May 26, 2026 15:02

Adapting runtime_distributed to C++20 modules

05b49fb

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Adapting segmented_algorithms to C++20 modules

1021c3b

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Adapting segmented_algorithms to C++20 modules

a2a444d

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Removing asio from public headers and APIs

b437b8b

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Adapt checkpoint to C++20 modules

8d76106

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Remove Boost from public HPX Headers

a078a21

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Adapting collectives to C++20 modules

de49861

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

Adapting compute to C++20 modules

9d402be

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

hkaiser force-pushed the cpp_modules branch 2 times, most recently from a850990 to 08f14a5 Compare May 26, 2026 21:01

Adapting init_runtime to C++20 modules

81ae969

Signed-off-by: Hartmut Kaiser <hartmut.kaiser@gmail.com>

hkaiser force-pushed the cpp_modules branch from 08f14a5 to 81ae969 Compare May 26, 2026 23:04

hkaiser merged commit 86e5d08 into master May 27, 2026
88 of 96 checks passed

hkaiser deleted the cpp_modules branch May 27, 2026 02:32

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hkaiser commented May 22, 2026 •

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