A. S. Mete
YOU?
Author Swipe
View article: Advancements in the in-file metadata system for the ATLAS experiment
Advancements in the in-file metadata system for the ATLAS experiment Open
The High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) will increase luminosity and the number of events by an order of magnitude, demanding more concurrent data processing. Event processing is trivially parallel, but metadata h…
View article: Dual-window transformer framework with pyramid structure and constrained self-attention for hyperspectral anomaly detection
Dual-window transformer framework with pyramid structure and constrained self-attention for hyperspectral anomaly detection Open
Hyperspectral anomaly detection (HAD) is widely used in various fields including military, agriculture, mining, and food safety inspection. However, the absence of prior information on targets poses significant challenges to feature extrac…
View article: Impact of RNTuple on Storage Resources for ATLAS Production
Impact of RNTuple on Storage Resources for ATLAS Production Open
Over the past years, the ROOT team has been developing a new I/O format called RNTuple to store data from experiments at CERN’s Large Hadron Collider. RNTuple is designed to improve ROOT’s existing TTree I/O subsystem by improving I/O spee…
View article: ROOT RNTuple and EOS: The Next Generation of Event Data I/O
ROOT RNTuple and EOS: The Next Generation of Event Data I/O Open
For several years, the ROOT team is developing the new RNTuple I/O subsystem in preparation of the next generation of collider experiments. Both HL-LHC and DUNE are expected to start data taking by the end of this decade. They pose unprece…
View article: ATLAS software tools to handle ROOT RNTuple*
ATLAS software tools to handle ROOT RNTuple* Open
The software of the ATLAS experiment at the CERN LHC accelerator contains a number of tools to inspect (validate, summarize, peek into etc.) all its official data formats recorded in ROOT files. These tools — mainly written in the Python p…
View article: Adoption of ROOT RNTuple for the next main event data storage technology in the ATLAS production framework Athena
Adoption of ROOT RNTuple for the next main event data storage technology in the ATLAS production framework Athena Open
Since the start of LHC in 2008, the ATLAS experiment has relied on ROOT to provide storage technology for all its processed event data. Internally, ROOT files are organized around TTree structures that are capable of storing complex C++ ob…
View article: Framework for custom event sample augmentations for ATLAS analysis data
Framework for custom event sample augmentations for ATLAS analysis data Open
For HEP event processing, data is typically stored in column-wise synchronized containers, such as most prominently ROOT’s TTree, which have been used for several decades to store by now over 1 exabyte. These containers can combine row-wis…
View article: Optimizing ATLAS data storage: The impact of compression algorithms on ATLAS physics analysis data formats
Optimizing ATLAS data storage: The impact of compression algorithms on ATLAS physics analysis data formats Open
The increased footprint foreseen for Run-3 and HL-LHC data will soon expose the limits of currently available storage and CPU resources. Data formats are already optimized according to the processing chain for which they are designed. ATLA…
View article: Shared I/O Developments for Run 3 in the ATLAS Experiment
Shared I/O Developments for Run 3 in the ATLAS Experiment Open
The ATLAS experiment extensively uses multi-process (MP) parallelism to maximize data-throughput especially in I/O intensive workflows, such as the production of Derived Analysis Object Data (DAOD). In this mode, worker processes are spawn…
View article: HL-LHC Computing Review: Common Tools and Community Software
HL-LHC Computing Review: Common Tools and Community Software Open
Common and community software packages, such as ROOT, Geant4 and event generators have been a key part of the LHC's success so far and continued development and optimisation will be critical in the future. The challenges are driven by an a…
View article: GPU Usage in ATLAS Reconstruction and Analysis
GPU Usage in ATLAS Reconstruction and Analysis Open
With Graphical Processing Units (GPUs) and other kinds of accelerators becoming ever more accessible, High Performance Computing Centres all around the world using them ever more, ATLAS has to find the best way of making use of such accele…
View article: Searches for Higgsinos and related challenges in ATLAS
Searches for Higgsinos and related challenges in ATLAS Open
Natural models of Supersymmetry (SUSY) typically favour existence of light Higgsinos. Models in which the only accessible SUSY particles are charginos and neutralinos that are predominantly Higgsinos tend to have low mass splitting between…