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

Recall:

Current L5/PC Farm framework

Same as "current H1 framework" except that main input/output is not data file but instead shared memory event pool.

Simple to run "current H1 framework" as only event in/out is altered

But: multiple database connections
multiple printout files
multiple histogram files

Extra infrastructure required
combine histogram files
feed events to / from shared memory pool
synchronise runs/ sort event numbers

Single shared memory pool currently limits all input and output most go via a single machine.