Oct 10 – 14, 2016
San Francisco Marriott Marquis
America/Los_Angeles timezone

Networks in ATLAS

Oct 11, 2016, 12:15 PM
GG C2 (San Francisco Mariott Marquis)


San Francisco Mariott Marquis

Oral Track 3: Distributed Computing Track 3: Distributed Computing


Networks have played a critical role in high-energy physics
(HEP), enabling us to access and effectively utilize globally distributed
resources to meet the needs of our physicists.

Because of their importance in enabling our grid computing infrastructure
many physicists have taken leading roles in research and education (R&E)
networking, participating in, and even convening, network related meetings
and research programs with the broader networking community worldwide. This
has led to HEP benefiting from excellent global networking capabilities for
little to no direct cost. However, as other science domains ramp-up their
need for similar networking it becomes less clear that this situation will
continue unchanged.

What this means for ATLAS in particular needs to be understood. ATLAS has
evolved its computing model since the LHC started based upon its experience
with using globally distributed resources. The most significant theme of
those changes has been increased reliance upon, and use of, its networks.

We will report on a number of networking initiatives in ATLAS including the
integration of network awareness into PANDA, the changes in our DDM system
to allow remote access to data and participation in the global perfSONAR
network monitoring efforts of WLCG.

We will also discuss new efforts underway that are exploring the inclusion
and use of software defined networks (SDN) and how ATLAS might benefit from:
Orchestration and optimization of distributed data access and data movement.
Better control of workflows, end to end.
Enabling prioritization of time-critical vs normal tasks
Improvements in the efficiency of resource usage

Tertiary Keyword (Optional) Distributed data handling
Secondary Keyword (Optional) Distributed workload management
Primary Keyword (Mandatory) Network systems and solutions

Presentation materials