Update the requested memory size in reused blocks

[fwyzard]

PR description:

Update the CachingAllocator requested size in reused blocks.

PR validation:

None.

[fwyzard]

Minimal version of #51730.

[cmsbuild]

cms-bot internal usage

[fwyzard]

type bugfix

[fwyzard]

please test

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-51741/50683

• There are other open Pull requests which might conflict with changes you have proposed:
  • File HeterogeneousCore/AlpakaInterface/interface/CachingAllocator.h modified in PR(s): Make the caching memory allocator lock-free #46658, PerfTools/Perfetto: in-process Perfetto tracing service #51271, CachingAllocator: report the current requested size in reused block #51730

[cmsbuild]

A new Pull Request was created by @fwyzard for master.

It involves the following packages:

• HeterogeneousCore/AlpakaInterface (heterogeneous)

@fwyzard, @makortel can you please review it and eventually sign? Thanks.
@makortel, @rovere this is something you requested to watch as well.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[cmsbuild]

-1

Failed Tests: RelVals-AMD_MI300X amd_mi300xUnitTests
Size: This PR adds an extra 24KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-c92f7c/55488/summary.html
COMMIT: d44ad30
CMSSW: CMSSW_20_1_X_2026-08-20-2300/el9_amd64_gcc14
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/51741/55488/install.sh to create a dev area with all the needed externals and cmssw changes.

DAS Queries: The DAS query tests failed, see the summary page for details.

Failed RelVals-AMD_MI300X

• 37634.40437634.404_TTbar_14TeV+Run4D127_Patatrack_PixelOnlyAlpaka_Profiling/step2_TTbar_14TeV+Run4D127_Patatrack_PixelOnlyAlpaka_Profiling.log
• 37634.40237634.402_TTbar_14TeV+Run4D127_Patatrack_PixelOnlyAlpaka/step2_TTbar_14TeV+Run4D127_Patatrack_PixelOnlyAlpaka.log

Comparison Summary

Summary:

• You potentially removed 1 lines from the logs
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 45
• DQMHistoTests: Total histograms compared: 3592269
• DQMHistoTests: Total failures: 7
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3592244
• DQMHistoTests: Total skipped: 18
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 44 files compared)
• Checked 195 log files, 163 edm output root files, 45 DQM output files
• TriggerResults: no differences found

NVIDIA_H100 Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 106 differences found in the comparisons
• DQMHistoTests: Total files compared: 7
• DQMHistoTests: Total histograms compared: 173739
• DQMHistoTests: Total failures: 9119
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 164620
• DQMHistoTests: Total skipped: 0
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 6 files compared)
• Checked 25 log files, 20 edm output root files, 7 DQM output files
• TriggerResults: no differences found

NVIDIA_L4 Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 117 differences found in the comparisons
• DQMHistoTests: Total files compared: 7
• DQMHistoTests: Total histograms compared: 173739
• DQMHistoTests: Total failures: 9809
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 163930
• DQMHistoTests: Total skipped: 0
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 6 files compared)
• Checked 25 log files, 20 edm output root files, 7 DQM output files
• TriggerResults: no differences found

NVIDIA_L40S Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 97 differences found in the comparisons
• DQMHistoTests: Total files compared: 7
• DQMHistoTests: Total histograms compared: 173739
• DQMHistoTests: Total failures: 9117
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 164622
• DQMHistoTests: Total skipped: 0
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 6 files compared)
• Checked 25 log files, 20 edm output root files, 7 DQM output files
• TriggerResults: no differences found

NVIDIA_T4 Comparison Summary

Summary:

• You potentially added 1 lines to the logs
• Reco comparison results: 57 differences found in the comparisons
• DQMHistoTests: Total files compared: 7
• DQMHistoTests: Total histograms compared: 173739
• DQMHistoTests: Total failures: 6604
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 167135
• DQMHistoTests: Total skipped: 0
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 6 files compared)
• Checked 25 log files, 20 edm output root files, 7 DQM output files
• TriggerResults: no differences found

Max Memory Comparisons exceeding threshold NVIDIA_L4

@cms-sw/core-l2 , I found 1 workflow step(s) with memory usage exceeding the error threshold:

Expand to see workflows ...

• Error: Workflow 37634.7503_TTbar_14TeV+Run4D127_HLTHeterogeneousValid step2 max memory diff -37.9 exceeds +/- 30.0 MiB

Max Memory Comparisons exceeding threshold NVIDIA_L40S

@cms-sw/core-l2 , I found 1 workflow step(s) with memory usage exceeding the error threshold:

Expand to see workflows ...

• Error: Workflow 37634.7503_TTbar_14TeV+Run4D127_HLTHeterogeneousValid step2 max memory diff 30.9 exceeds +/- 30.0 MiB