Speaker
Dr
Peter Wegner
(DESY)
Description
Multi-core CPUs are the standard way for a performance
efficient utilization of
additional on-chip CPU space provided by advanced silicon
technologies. Though this
leads to a more fine grained parallel approach on the
programming level for instance
by introducing multithreading it is also expected that
trivial parallel applications
like the event processing in High Energy Physics can take
advantage of these new
technologies.
In the talk the performance of dual- and quad-core systems
is compared based on real
HEP applications like the ROOT stress benchmark and the
ATLAS Athena framework. The
goal of the tests was to investigate the ability of those
systems to beintegrated
into large farm systems controlled by a queuing system.
Besides the benchmark results coming from different compute
servers other relevant
numbers like the price performance ratio and ratio of
electrical power consumption
versus performance are discussed.
Additionally a short view on the design of a certain
multi-core architectures is
given and possible bottlenecks in using such systems are
addressed.
Primary author
Dr
Peter Wegner
(DESY)
