An extension to H1 application framework ( BOS/FSEQR/module steering ) to enable parallel processing.

Recall:

Current L4 Farm framework

FSEQR input stream is fed not only with events but also with database records ,
end-of-run marker records,
runstart record subset,
pre-event records.

FSEQR output stream contains not only RUNEVENT records but also
end-of-run marker records, ( synchronise at run change )
RUNDATA records ( -> TCL job )
SPECIAL stream records
histogram records

Dummy NDB routine...all database banks automatically
present before event processing

ALL modules are called BEGRUN true , REVENT false to book histograms

Required modules are called with REVENT true for processing

No multiple database connections
No multiple histogram files
Multiple parallel input streams
Output stream independant of input

Extra infrastructure required
database reading ( mdbquefpack )
combine histograms and write to database ( TCL job )
output file writing and dumping ( datalog job )