Speakers
Mr
Jakub Moscicki
(CERN)Dr
Maria Grazia Pia
(INFN GENOVA)Dr
Patricia Mendez Lorenzo
(CERN)Dr
Susanna Guatelli
(INFN Genova)
Description
The quantitative results of a study concerning Geant4 simulation in a distributed
computing environment (local farm and LCG GRID) are presented. The architecture of
the system, based on DIANE, is presented; it allows to configure a Geant4 application
transparently for sequential execution (on a single PC), and for parallel execution
on a local PC farm or on the GRID. Quantitative results concerning the efficiency of
the system, overheads introduced by the DIANE system, latency for job execution and
the optimisation of the job configuration (number of nodes and tasks) are presented.
The quantitative results concern two typical experimental use cases studied in the
project: 1) time-consuming simulations requiring "quasi-online" response of the order
of a few minutes (e.g. studies required for detector design optimisation), and 2)
high statistics, high-precision, computing-intensive simulations (e.g. simulation
productions for physics studies). To our knowledge, this study represents the first
quantitative evaluation of Geant4 simulation applications in real-life distributed
computing environments, and comparison of simulation applications in a PC farm or on
the GRID.
Primary authors
Mr
Jakub Moscicki
(CERN)
Dr
Maria Grazia Pia
(INFN GENOVA)
Dr
Patricia Mendez Lorenzo
(CERN)
Dr
Susanna Guatelli
(INFN Genova)
