AthDerivation cache requested by some groups for re-doing production that struggled over Christmas (includes fixes for memory/slow processing issues with BPHY8, FTAG, EXOT8). Also fixes the MCORE zero-event-file merging crash.
AthDerivation cache requested by some groups for re-doing production that struggled over Christmas (includes fixes for memory/slow processing issues with BPHY8, FTAG, EXOT8). Also fixes the MCORE zero-event-file merging crash.