John Hover
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View article: VC3: Virtual Clusters for Community Computation
VC3: Virtual Clusters for Community Computation Open
A traditional HPC computing facility provides a large amount of computing power but has a fixed environment designed to satisfy local needs. This makes it very challenging for users to deploy complex applications that span multiple sites a…
View article: VC3: Virtual Clusters for Community Computation (Final Technical Report)
VC3: Virtual Clusters for Community Computation (Final Technical Report) Open
A traditional HPC computing facility provides a large amount of computing power but has a fixed environment designed to satisfy local needs. This makes it very challenging for users to deploy complex applications that span multiple sites a…
View article: Federated User Account Management
Federated User Account Management Open
BNL SDCC (Scientific Data and Computing Center) recently deployed a centralized identity management solution to support Single Sign On (SSO) authentication across multiple IT systems. The system supports federated login access via CILogon …
View article: HEPCloud, an Elastic Hybrid HEP Facility using an Intelligent Decision Support System
HEPCloud, an Elastic Hybrid HEP Facility using an Intelligent Decision Support System Open
HEPCloud is rapidly becoming the primary system for provisioning compute resources for all Fermilab-affiliated experiments. In order to reliably meet the peak demands of the next generation of High Energy Physics experiments, Fermilab must…
View article: Harvester : an edge service harvesting heterogeneous resources for ATLAS
Harvester : an edge service harvesting heterogeneous resources for ATLAS Open
The Production and Distributed Analysis (PanDA) system has been successfully used in the ATLAS experiment as a data-driven workload management system. The PanDA system has proven to be capable of operating at the Large Hadron Collider data…
View article: Consolidation of cloud computing in ATLAS
Consolidation of cloud computing in ATLAS Open
Throughout the first half of LHC Run 2, ATLAS cloud computing has undergone a period of consolidation, characterized by building upon previously established systems, with the aim of reducing operational effort, improving robustness, and re…
View article: Interfacing HTCondor-CE with OpenStack
Interfacing HTCondor-CE with OpenStack Open
Over the past few years, Grid Computing technologies have reached a high level of maturity. One key aspect of this success has been the development and adoption of newer Compute Elements to interface the external Grid users with local batc…
View article: Scaling up ATLAS Event Service to production levels on opportunistic computing platforms
Scaling up ATLAS Event Service to production levels on opportunistic computing platforms Open
Continued growth in public cloud and HPC resources is on track to exceed the dedicated resources available for ATLAS on the WLCG. Examples of such platforms are Amazon AWS EC2 Spot Instances, Edison Cray XC30 supercomputer, backfill at Tie…
View article: PanDA: Exascale Federation of Resources for the ATLAS Experiment at the LHC
PanDA: Exascale Federation of Resources for the ATLAS Experiment at the LHC Open
After a scheduled maintenance and upgrade period, the world’s largest and most powerful machine - the Large Hadron Collider(LHC) - is about to enter its second run at unprecedented energies. In order to exploit the scientific potential of …
View article: The Evolution of Cloud Computing in ATLAS
The Evolution of Cloud Computing in ATLAS Open
The ATLAS experiment has successfully incorporated cloud computing technology and cloud resources into its primarily grid-based model of distributed computing. Cloud R&D activities continue to mature and transition into stable production s…
View article: PanDA: Evolution and Recent Trends in LHC Computing
PanDA: Evolution and Recent Trends in LHC Computing Open
The Large Hadron Collider(LHC) is the world's largest and most powerful machine. It started operating in 2009 with a scientific program foreseen to extend over the next coming decades at increasing energies and luminosities to maximise the…