[16_0_X] Improve `PortableHost{Collection,Object}` dictionary declarations #49774

makortel · 2026-01-12T14:49:52Z

PR description:

Backport of #48824. Original description

Testing ROOT PR on an option to disable header parsing during TClass::GetClass() call (root-project/root#18402) it was noticed the type alias gets listed in the rootmap file only if the alias is requested before the real type (see root-project/root#19705 for more details).

In the mean time, having the type alias in the rootmap file is necessary to avoid header parsing for the execution of the read rules that use the type alias names, e.g.

cmssw/DataFormats/Portable/interface/PortableHostCollectionReadRules.h

Line 84 in 2de4944

rule.fSource = type + "::Layout layout_;";

, and therefore it seemed worthwhile to change the dictionaries with PortableHost{Collection,Object}.

In the present state this PR demonstrates what the impact would be for the PortableTestObjects. If deemed viable, the next steps would be to update DataFormats/Portable README and scripts, and then update all the other classes_def.xml files that declare these portable data products.

PR validation:

None beyond #48824

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

Backport of #48824 (using the same branch).

…heir aliased types in classes_def.xml In ROOT presently the type alias gets listed in the rootmap file only if the alias is requested before the real type. Having the type alias in the rootmap file is necessary to avoid header parsing for the execution of the read rules that use the type alias names.

…ADME

…aliased-to types This should avoid ROOT header parsing

They are not in DataFormats, so they are allowed to be transient only.

cmsbuild · 2026-01-12T14:50:16Z

A new Pull Request was created by @makortel for CMSSW_16_0_X.

It involves the following packages:

DataFormats/BeamSpot (reconstruction)
DataFormats/EcalRecHit (reconstruction)
DataFormats/HGCalReco (reconstruction)
DataFormats/HcalDigi (simulation)
DataFormats/HcalRecHit (reconstruction)
DataFormats/ParticleFlowReco (reconstruction)
DataFormats/Portable (heterogeneous)
DataFormats/PortableTestObjects (heterogeneous)
DataFormats/SiPixelClusterSoA (heterogeneous, reconstruction)
DataFormats/SiPixelDigiSoA (heterogeneous, reconstruction)
RecoTracker/LSTCore (reconstruction)

@Moanwar, @civanch, @cmsbuild, @fwyzard, @jfernan2, @kpedro88, @makortel, @mandrenguyen, @mdhildreth, @srimanob can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @ReyerBand, @VinInn, @VourMa, @abdoulline, @argiro, @bsunanda, @dgulhan, @dkotlins, @elusian, @felicepantaleo, @ferencek, @gpetruc, @hatakeyamak, @lgray, @mariadalfonso, @missirol, @mmasciov, @mmusich, @mroguljic, @mtosi, @rchatter, @rovere, @thomreis, @tsusa, @wang0jin 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 · 2026-01-12T14:50:17Z

cms-bot internal usage

makortel · 2026-01-12T14:52:05Z

enable gpu

makortel · 2026-01-12T14:52:11Z

@cmsbuild, please test

cmsbuild · 2026-01-12T20:14:24Z

-1

Size: This PR adds an extra 20KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1bc021/50529/summary.html
COMMIT: d001897
CMSSW: CMSSW_16_0_X_2026-01-12-1100/el8_amd64_gcc13
Additional Tests: GPU,AMD_MI300X,AMD_W7900,NVIDIA_H100,NVIDIA_L40S,NVIDIA_T4
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/49774/50529/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

You potentially removed 1 lines from the logs
ROOTFileChecks: Some differences in event products or their sizes found
Reco comparison results: 4 differences found in the comparisons
Reco comparison had 4 failed jobs
DQMHistoTests: Total files compared: 55
DQMHistoTests: Total histograms compared: 4513958
DQMHistoTests: Total failures: 67
DQMHistoTests: Total nulls: 0
DQMHistoTests: Total successes: 4513871
DQMHistoTests: Total skipped: 20
DQMHistoTests: Total Missing objects: 0
DQMHistoSizes: Histogram memory added: 0.0 KiB( 54 files compared)
Checked 235 log files, 208 edm output root files, 55 DQM output files
TriggerResults: no differences found

AMD_MI300X Comparison Summary

Summary:

You potentially added 3 lines to the logs
Reco comparison results: 234 differences found in the comparisons
Reco comparison had 6 failed jobs
DQMHistoTests: Total files compared: 11
DQMHistoTests: Total histograms compared: 149371
DQMHistoTests: Total failures: 31134
DQMHistoTests: Total nulls: 9
DQMHistoTests: Total successes: 118228
DQMHistoTests: Total skipped: 0
DQMHistoTests: Total Missing objects: 0
DQMHistoSizes: Histogram memory added: 0.0 KiB( 10 files compared)
Checked 42 log files, 45 edm output root files, 11 DQM output files
TriggerResults: no differences found

AMD_W7900 Comparison Summary

Summary:

You potentially added 9 lines to the logs
Reco comparison results: 241 differences found in the comparisons
Reco comparison had 6 failed jobs
DQMHistoTests: Total files compared: 11
DQMHistoTests: Total histograms compared: 149371
DQMHistoTests: Total failures: 32407
DQMHistoTests: Total nulls: 12
DQMHistoTests: Total successes: 116952
DQMHistoTests: Total skipped: 0
DQMHistoTests: Total Missing objects: 0
DQMHistoSizes: Histogram memory added: 0.0 KiB( 10 files compared)
Checked 42 log files, 45 edm output root files, 11 DQM output files
TriggerResults: no differences found

NVIDIA_L40S Comparison Summary

Summary:

You potentially removed 7 lines from the logs
Reco comparison results: 239 differences found in the comparisons
Reco comparison had 6 failed jobs
DQMHistoTests: Total files compared: 11
DQMHistoTests: Total histograms compared: 149371
DQMHistoTests: Total failures: 27798
DQMHistoTests: Total nulls: 11
DQMHistoTests: Total successes: 121562
DQMHistoTests: Total skipped: 0
DQMHistoTests: Total Missing objects: 0
DQMHistoSizes: Histogram memory added: 0.0 KiB( 10 files compared)
Checked 42 log files, 45 edm output root files, 11 DQM output files
TriggerResults: no differences found

NVIDIA_T4 Comparison Summary

Summary:

You potentially removed 14 lines from the logs
Reco comparison results: 249 differences found in the comparisons
Reco comparison had 6 failed jobs
DQMHistoTests: Total files compared: 11
DQMHistoTests: Total histograms compared: 149371
DQMHistoTests: Total failures: 30097
DQMHistoTests: Total nulls: 13
DQMHistoTests: Total successes: 119261
DQMHistoTests: Total skipped: 0
DQMHistoTests: Total Missing objects: 0
DQMHistoSizes: Histogram memory added: 0.0 KiB( 10 files compared)
Checked 42 log files, 45 edm output root files, 11 DQM output files
TriggerResults: no differences found

makortel · 2026-01-12T21:12:01Z

On NVIDIA H100 some of the workflows failed with

----- Begin Fatal Exception 12-Jan-2026 19:18:50 CET-----------------------
An exception of category 'StdException' occurred while
   [0] Processing  Event run: 1 lumi: 1 event: 1 stream: 0
   [1] Running path 'MC_Ele5_Open_Unseeded'
   [2] Calling method for module HGCalSoARecHitsLayerClustersProducer@alpaka/'hltHgcalSoARecHitsLayerClustersProducer'
Exception Message:
A std::exception was thrown.
/data/cmsbld/jenkins/workspace/build-any-ib/w/el8_amd64_gcc13/external/alpaka/2.0.0-8493f1d11d0378dc14d6ea6ecfc69ac5/include/alpaka/mem/buf/uniformCudaHip/traits/BufUniformCudaHipRtTraits.hpp(283) 'TApi::mallocAsync(&memPtr, static_cast<std::size_t>(width) * sizeof(TElem), queue.getNativeHandle())' returned error  : 'cudaErrorNotSupported': 'operation not supported'!
----- End Fatal Exception -------------------------------------------------

The symptoms look like #47270 with

AlpakaServiceCudaAsync succesfully initialised.
Found 1 device:
  - NVIDIA H100L-2-24C MIG 2g.24gb

fwyzard · 2026-01-13T06:06:41Z

+heterogeneous

fwyzard · 2026-01-13T06:13:47Z

The failing tests were running on grid1165624 with the NVIDIA driver 580.x:

+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.95.05              Driver Version: 580.95.05      CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+

while the passing ones ran on ngt-nvidia-h100-01 with the NVIDIA driver 570.x:

+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 570.124.06             Driver Version: 570.124.06     CUDA Version: 12.8     |
|-----------------------------------------+------------------------+----------------------+

@smuzaffar do we have different runners for the H100 tests ?

fwyzard · 2026-01-13T06:16:15Z

ignore tests-rejected with external-failure

makortel added 5 commits December 29, 2025 18:41

Add class version and checksum for TestStruct

69ddd79

Include the necessity of dictionaries for the nested type alias in RE…

7e8047f

…ADME

Define dictionaries of nested type aliases of Portable* before their …

5bebe3b

…aliased-to types This should avoid ROOT header parsing

Mark LST collections transient

d001897

They are not in DataFormats, so they are allowed to be transient only.

cmsbuild added this to the CMSSW_16_0_X milestone Jan 12, 2026

cmsbuild added reconstruction-pending simulation-pending pending-signatures tests-pending orp-pending heterogeneous-pending tracking trk changes-dataformats labels Jan 12, 2026

makortel mentioned this pull request Jan 12, 2026

As a workaround add PortableHost* type aliases to their classes_def.xml files. cms-sw/framework-team#1542

Open

makortel mentioned this pull request Jan 12, 2026

Improve PortableHost{Collection,Object} dictionary declarations #48824

Open

cmsbuild added tests-started and removed tests-pending labels Jan 12, 2026

cmsbuild added tests-rejected and removed tests-started labels Jan 12, 2026

cmsbuild added heterogeneous-approved and removed heterogeneous-pending labels Jan 13, 2026

cmsbuild added tests-approved tests-external-failure and removed tests-rejected labels Jan 13, 2026

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makortel commented Jan 12, 2026

PR description:

PR validation:

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

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Comparison Summary

AMD_MI300X Comparison Summary

AMD_W7900 Comparison Summary

NVIDIA_L40S Comparison Summary

NVIDIA_T4 Comparison Summary

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[16_0_X] Improve `PortableHost{Collection,Object}` dictionary declarations #49774

[16_0_X] Improve `PortableHost{Collection,Object}` dictionary declarations #49774

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