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Forked from atlas / athena
77896 commits behind the upstream repository.
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scott snyder authored
CaloTriggerTowerService used to read LArTTCellMap via a conditions callback.
This is not thread-friendly, so it was changed; it is now retrieved from
the detector store during event processing.  However, this can lead
to the I/O system triggering the creation of TClass instances for the
LArTTCellMap persistent classes, and TClass has been observed to sometimes
malfunction when created in a MT context (at least as of root 6.22.00).
The resulting dictionary failures were causing jobs to occasionally
crash with bad_alloc exceptions.  Try to fix by forcing the needed
TClass instances to be created during initialize.
d3c8b91c
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ATLAS Offline software

Welcome to ATLAS offline software!

To find out how to build Athena, make merge requests etc, please have a look at the release building pages.

In particular, if you fork this project please do not forget to add the ATLAS Robot as a developer (assuming you might want to submit a merge request) as documented here.

For ATLAS members, please see the Atlas Computing Twiki for even more information.

Branches

The following branches are currently active:

Branch Purpose Main Project, Release Series
21.0 Tier0 and MC16c Athena, 21.0.X
21.0-mc16a MC16a bugfixes Athena, 21.0.20.Y
21.0-mc16d MC16d bugfixes Athena, 21.0.20.Y
21.1 HLT and P1 monitoring AthenaP1, 21.1.X
21.2 Derivations and Analysis AthDerivations + (Ath)AnalysisBase, 21.2.X
21.3 MC18 Simulation Athena, 21.3.X
21.6 Event Generation AthGeneration, 21.6.X
21.9 Upgrade Phase-2 developments Athena + AthSimulation, 21.9.X
master AthenaMT development Athena, 22.0.X

Links

  • The ATLAS webpage will tell you all about the ATLAS experiment (for ATLAS members, the collaboration webpage is here)
  • The Twiki is the main source of documentation, and has many links to sub-domains
  • The software documentation page has some tutorials etc
  • The git repository is here
  • And the Doxygen code documentation can be found here
  • To cite Athena, you can use the following zenodo DOI