Build CUDA host code if CUDA libraries are available

[fwyzard]

PR description:

Relax the condition for building CUDA host code to check only for the availability of the CUDA libraries, without requiring the possibility to compile CUDA device code.
This makes them available - for example - in GCC 10 builds.

PR validation:

The affected packages now build with GCC 10, and the CUDAService can be loaded:

$ echo $SCRAM_ARCH 
slc7_amd64_gcc820

$ cmsRun HeterogeneousCore/CUDAServices/test/testCUDAService.py 
%MSG-w CUDAService:  (NoModuleName) 02-Sep-2020 16:25:51 CEST pre-events
Failed to initialize the CUDA runtime.
Disabling the CUDAService.
%MSG

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

The code-checks are being triggered in jenkins.

[fwyzard]

@cmsbuild, please test

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-31334/18094

• This PR adds an extra 12KB to repository

[cmsbuild]

The tests are being triggered in jenkins.

• CMSSW_11_2_X_2020-09-01-2300/slc7_amd64_gcc820: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/9067/console Started: 2020/09/02 16:36

[cmsbuild]

A new Pull Request was created by @fwyzard (Andrea Bocci) for master.

It involves the following packages:

HeterogeneousCore/CUDAServices
HeterogeneousCore/CUDAUtilities

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

cms-bot commands are listed here

[cmsbuild]

The code-checks are being triggered in jenkins.

[fwyzard]

@cmsbuild, please test

[makortel]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.
Test Parameters:

• ARCHITECTURE_FILTER = slc7_amd64_gcc820
• CMSSW_11_2_X_2020-09-02-2300/slc7_amd64_gcc820: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/9093/console Started: 2020/09/03 15:30

[cmsbuild]

+1
Tested at: 829da5f
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7212c9/9093/summary.html
CMSSW: CMSSW_11_2_X_2020-09-02-2300
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7212c9/9093/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 35
• DQMHistoTests: Total histograms compared: 2609667
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2609644
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 34 files compared)
• Checked 149 log files, 22 edm output root files, 35 DQM output files

[perrotta]

+1

• Technical, it does its job: it adds protection when cuda libraries are not available
• Jenkins tests pass both in "standard" architectures and witg gcc10

[silviodonato]

I'm going to merge this in the next IB. Any objections @cms-sw/alca-l2 ?

[christopheralanwest]

+alca

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[silviodonato]

+1