Athena Developer Guide

Athena Appendix B Options for standard components Version/Issue: 2.0.0
Table B.9 Options of Algorithms in GaudiAlg package
Algorithm name Option Name Default value Meaning
EventCounter Frequency 1; Frequency with which number of events
should be reported
Prescaler PercentPass 100.0; Percentage of events that should be passed
Sequencer Members Names of members of the sequence
Sequencer StopOverride false; If true, do not stop sequence if a filter fails
Table B.10 Options available for output streams (e.g. DstWriter)
Output stream objects are used for writing user created data into data files or databases. They are created and
named by setting the option ApplicationMgr.OutStream. For each output stream the following options
are available
Option name Default value Meaning
ItemList {} The list of data objects to be written to this stream, e.g.
{“/Event#1”,”Event/MyTracks/#1”};
EvtDataSvc “EventDataSvc” The service from which to retrieve objects.
Output {} Output data stream specification. Format:
{“DATAFILE='mydst.root' TYP='ROOT'”};
AcceptAlgs {} If any of these algorithms sets filterflag=true; the event is accepted
RequireAlgs {} If any of these algorthms is not executed, the event is rejected
VetoAlgs {} If any of these algorithms does not set filterflag = true; the event is rejected
Table B.11 Standard Options for persistency services (e.g. EventPersistencySvc)
Option name Default value Meaning
CnvServices {} Conversion services to be used by the service to load or store
persistent data (e.g. "RootEvtCnvSvc")
Table B.12 Standard Options for conversion services (e.g. RootEvtCnvSvc)
Option name Default value Meaning
DbType "" Persistency technology (e.g. "ROOT")
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