Exception from AlcaBeamMonitor

[makortel]

Workflow 25200.0 step 3 failed in CMSSW_13_2_X_2023-06-20-1100 on slc7_amd64_gcc11 with

----- Begin Fatal Exception 20-Jun-2023 17:16:08 CEST-----------------------
An exception of category 'FatalRootError' occurred while
   [0] Processing global end LuminosityBlock run: 1 luminosityBlock: 1
   [1] Calling method for module AlcaBeamMonitor/'AlcaBeamMonitor'
   Additional Info:
      [a] Fatal Root Error: @SUB=Minuit2
VariableMetricBuilder Initial matrix not pos.def.

----- End Fatal Exception -------------------------------------------------

https://cmssdt.cern.ch/SDT/cgi-bin/logreader/slc7_amd64_gcc11/CMSSW_13_2_X_2023-06-20-1100/pyRelValMatrixLogs/run/25200.0_ZEE_13/step3_ZEE_13.log#/

Since it is not seen elsewhere, the failure looks like a random occurrence.

[cmsbuild]

A new Issue was created by @makortel Matti Kortelainen.

@Dr15Jones, @perrotta, @dpiparo, @rappoccio, @makortel, @smuzaffar can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[makortel]

assign dqm,db

[cmsbuild]

New categories assigned: dqm,db

@tjavaid,@micsucmed,@nothingface0,@rvenditti,@emanueleusai,@syuvivida,@francescobrivio,@saumyaphor4252,@tvami,@pmandrik you have been requested to review this Pull request/Issue and eventually sign? Thanks

[mmusich]

This reminds me of a similar kind of issue the kept happening in the online DQM in a different kind of beam spot fit and got fixed by #38687 and #39285
@francescobrivio FYI

[makortel]

Occurred in CMSSW_13_3_CLANG_X_2023-07-28-2300 on el8_amd64_gcc11 in workflow 50205.0 step 3
https://cmssdt.cern.ch/SDT/cgi-bin/logreader/el8_amd64_gcc11/CMSSW_13_3_CLANG_X_2023-07-28-2300/pyRelValMatrixLogs/run/50205.0_ZTT_13/step3_ZTT_13.log#/

[dan131riley]

Seen again in el8_amd64_gcc11 CMSSW_13_3_ASAN_X_2023-08-25-2300 WF 250205.18 step 3

[mmusich]

type tracking

• just to keep it on the radar

[makortel]

Occurred in PR tests of cms-sw/cmsdist#8734 (comment)

[mmusich]

Occurred in PR tests of cms-sw/cmsdist#8734 (comment)

just for the record, despite the type of exception is the same, the module that is throwing it in cms-sw/cmsdist#8734 is DQMGenericClient/'primaryVertexResolutionClient', while here is AlcaBeamMonitor/'AlcaBeamMonitor'.