Stephan Hageboeck
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View article: Madgraph on GPUs and vector CPUs: towards production (The 5-year journey to the first LO release CUDACPP v1.00.00)
Madgraph on GPUs and vector CPUs: towards production (The 5-year journey to the first LO release CUDACPP v1.00.00) Open
The effort to speed up the Madgraph5_aMC@NLO generator by exploiting CPU vectorization and GPUs, which started at the beginning of 2020, has delivered the first production release of the code for leading-order (LO) processes in October 202…
View article: Madgraph on GPUs and vector CPUs: Towards production. The 5-year journey to the first LO release CUDACPP v1.00.00
Madgraph on GPUs and vector CPUs: Towards production. The 5-year journey to the first LO release CUDACPP v1.00.00 Open
The effort to speed up the Madgraph5_aMC@NLO generator by exploiting CPU vectorization and GPUs, which started at the beginning of 2020, has delivered the first production release of the code for leading-order (LO) processes in October 202…
View article: CHEP 2024: Preface to the Proceedings
CHEP 2024: Preface to the Proceedings Open
The 27 th International Conference on Computing in High Energy and Nuclear Physics (CHEP), organized by the AGH University of Science and Technology together with the Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sc…
View article: AdePT - Enabling GPU electromagnetic transport with Geant4
AdePT - Enabling GPU electromagnetic transport with Geant4 Open
Increasing simulation throughput is a major challenge for LHC experiments as they undergo significant detector upgrades for the high-luminosity phase. GPU-enabled particle transport simulation is a key R&D direction to address this, levera…
View article: Thoroughly testing and integrating hundreds of Pull Requests per month: ROOT’s new Cost-efficient and Feature Rich GitHub-based CI
Thoroughly testing and integrating hundreds of Pull Requests per month: ROOT’s new Cost-efficient and Feature Rich GitHub-based CI Open
ROOT is an open source framework, freely available on GitHub, at the heart of data acquisition, processing and analysis of HE(N)P experiments, and beyond. It is developed collaboratively: contributions are not authored only by ROOT team me…
View article: Madgraph5_aMC@NLO on GPUs and vector CPUs Experience with the first alpha release
Madgraph5_aMC@NLO on GPUs and vector CPUs Experience with the first alpha release Open
Madgraph5_aMC@NLO is one of the most-frequently used Monte-Carlo event generators at the LHC, and an important consumer of compute resources. The software has been reengineered to maintain the overall look and feel of the user interface wh…
View article: Training and Onboarding initiatives in High Energy Physics experiments
Training and Onboarding initiatives in High Energy Physics experiments Open
In this paper we document the current analysis software training and onboarding activities in several High Energy Physics (HEP) experiments: ATLAS, CMS, LHCb, Belle II and DUNE. Fast and efficient onboarding of new collaboration members is…
View article: Offloading electromagnetic shower transport to GPUs
Offloading electromagnetic shower transport to GPUs Open
Making general particle transport simulation for high-energy physics (HEP) single-instruction-multiple-thread (SIMT) friendly, to take advantage of accelerator hardware, is an important alternative for boosting the throughput of simulation…
View article: RDataFrame enhancements for HEP analyses
RDataFrame enhancements for HEP analyses Open
In recent years, RDataFrame, ROOT’s high-level interface for data analysis and processing, has seen widespread adoption on the part of HEP physicists. Much of this success is due to RDataFrame’s ergonomic programming model that enables the…
View article: Acceleration with GPUs and other RooFit news
Acceleration with GPUs and other RooFit news Open
RooFit is a toolkit for statistical modeling and fitting, and together with RooStats it is used for measurements and statistical tests by most experiments in particle physics, particularly the LHC experiments. As the LHC program progresses…
View article: HSF IRIS-HEP Second Analysis Ecosystem Workshop Report
HSF IRIS-HEP Second Analysis Ecosystem Workshop Report Open
The second workshop on the HEP Analysis Ecosystem took place 23-25 May 2022 at IJCLab in Orsay, to look at progress and continuing challenges in scaling up HEP analysis to meet the needs of HL-LHC and DUNE, as well as the very pressing nee…
View article: HSF IRIS-HEP Second Analysis Ecosystem Workshop Report
HSF IRIS-HEP Second Analysis Ecosystem Workshop Report Open
The second workshop on the HEP Analysis Ecosystem took place 23-25 May 2022 at IJCLab in Orsay, to look at progress and continuing challenges in scaling up HEP analysis to meet the needs of HL-LHC and DUNE, as well as the very pressing nee…
View article: HSF IRIS-HEP Second Analysis Ecosystem Workshop Report
HSF IRIS-HEP Second Analysis Ecosystem Workshop Report Open
The second workshop on the HEP Analysis Ecosystem took place 23-25 May 2022 at IJCLab in Orsay, to look at progress and continuing challenges in scaling up HEP analysis to meet the needs of HL-LHC and DUNE, as well as the very pressing nee…
View article: Unravelling the JPMorgan spoofing case using particle physics visualization methods
Unravelling the JPMorgan spoofing case using particle physics visualization methods Open
On 29 September 2020, JPMorgan was ordered to pay a settlement of $920.2 million for spoofing the metals and Treasury futures markets from 2008 to 2016. We examine these cases using a visualization method developed in particle physics (CER…
View article: When Two Worlds Collide: Using Particle Physics Tools to Visualize the Limit Order Book
When Two Worlds Collide: Using Particle Physics Tools to Visualize the Limit Order Book Open
We introduce a methodology to visualize the limit order book (LOB) using a particle physics lens. Open-source data-analysis tool ROOT, developed by CERN, is used to reconstruct and visualize futures markets. Message-based data is used, rat…
View article: Avoiding biases in binned fits
Avoiding biases in binned fits Open
Binned maximum likelihood fits are an attractive option when analysing large datasets, but require care when computing likelihoods of continuous PDFs in bins. For many years the widely used statistical modelling package evaluated probabili…
View article: When two worlds collide: Using particle physics tools to visualize the limit order book
When two worlds collide: Using particle physics tools to visualize the limit order book Open
We introduce a methodology to visualize the limit order book (LOB) using a particle physics lens. Open‐source data‐analysis tool ROOT, developed by CERN, is used to reconstruct and visualize futures markets. Message‐based data is used, rat…
View article: Software Training in HEP
Software Training in HEP Open
The long-term sustainability of the high-energy physics (HEP) research software ecosystem is essential to the field. With new facilities and upgrades coming online throughout the 2020s, this will only become increasingly important. Meeting…
View article: Design and engineering of a simplified workflow execution for the MG5aMC event generator on GPUs and vector CPUs
Design and engineering of a simplified workflow execution for the MG5aMC event generator on GPUs and vector CPUs Open
Physics event generators are essential components of the data analysis software chain of high energy physics experiments, and important consumers of their CPU resources. Improving the software performance of these packages on modern hardwa…
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: Software Challenges For HL-LHC Data Analysis
Software Challenges For HL-LHC Data Analysis Open
The high energy physics community is discussing where investment is needed to prepare software for the HL-LHC and its unprecedented challenges. The ROOT project is one of the central software players in high energy physics since decades. F…
View article: Faster RooFitting: Automated parallel calculation of collaborative statistical models
Faster RooFitting: Automated parallel calculation of collaborative statistical models Open
RooFit [1, 2] is the main statistical modeling and fitting package used to extract physical parameters from reduced particle collision data, e.g. the Higgs boson experiments at the LHC [3, 4]. RooFit aims to separate particle physics model…
View article: root-project/root: v6.18/02
root-project/root: v6.18/02 Open
Patch release for the v6.18 series. See also https://root.cern/content/release-61802
View article: Search for the $H\rightarrow b \bar{b}$ Decay of the Standard Model Higgs Boson in Associated Production with Vector Bosons Using ATLAS Data at $\sqrt{s}$ = 8 TeV
Search for the $H\rightarrow b \bar{b}$ Decay of the Standard Model Higgs Boson in Associated Production with Vector Bosons Using ATLAS Data at $\sqrt{s}$ = 8 TeV Open
In this thesis, a search for the $H \\rightarrow b \\bar{b}$ decay of the Standard-Model Higgs boson is presented. A dataset of $20.2\\, \\mathrm{fb}^{-1}$ recorded by the ATLAS detector at CERN is searched for events, where Higgs bosons a…
View article: Measurement of Cross Sections and Properties of the Higgs Boson Using the ATLAS Detector
Measurement of Cross Sections and Properties of the Higgs Boson Using the ATLAS Detector Open
This talk presents an overview of Higgs measurements on Run 2 data from 2015 and 2016. Measurement of fiducial and differential Higgs cross sections in decays to Bosons and updates on searches for fermionic Higgs decays or ttH production a…