Speaker
Ilija Vukotic
(University of Chicago (US))
Description
To meet a sharply increasing demand for computing resources in LHC Run 2,
ATLAS distributed computing systems reach far and wide to gather CPU and
storage capacity to execute an evolving ecosystem of production and
analysis workflow tools. Indeed more than a hundred computing sites from
the Worldwide LHC Computing Grid, plus many “opportunistic” facilities at
HPC centers, universities, national laboratories, and public clouds,
combine to meet these requirements. These resources have characteristics
(such as local queuing availability, proximity to data sources and target
destinations, network latency and bandwidth capacity, etc.) affecting the
overall processing throughput. To quantitatively understand and in some
instances predict behavior, we have developed a platform to aggregate,
index (for user queries), and analyze the more important information
streams affecting performance. These data streams come from the ATLAS
production system (PanDA) and distributed data management system (Rucio),
the network (throughput and latency measurements, aggregate link traffic),
and from the computing facilities themselves. The platform brings new
capabilities to the management of the overall system, including warehousing
information, an interface to execute arbitrary data mining and machine
learning algorithms over aggregated datasets, a platform to test usage
scenarios, and a portal for user-designed analytics dashboards.
Author
Collaboration ATLAS
(ATLAS)
