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View article: The ATLAS multithreaded offline framework
The ATLAS multithreaded offline framework Open
In preparation for Run 3 of the LHC, scheduled to start in 2021, the ATLAS experiment is revising its offline software so as to better take advantage of machines with many cores. A major part of this effort is migrating the software to run…
View article: HEP Community White Paper on Software trigger and event reconstruction: Executive Summary
HEP Community White Paper on Software trigger and event reconstruction: Executive Summary Open
Realizing the physics programs of the planned and upgraded high-energy physics (HEP) experiments over the next 10 years will require the HEP community to address a number of challenges in the area of software and computing. For this reason…
View article: HEP Community White Paper on Software trigger and event reconstruction
HEP Community White Paper on Software trigger and event reconstruction Open
Realizing the physics programs of the planned and upgraded high-energy physics (HEP) experiments over the next 10 years will require the HEP community to address a number of challenges in the area of software and computing. For this reason…
View article: Identifying Memory Allocation Patterns in HEP Software
Identifying Memory Allocation Patterns in HEP Software Open
HEP applications perform an excessive amount of allocations/deallocations within short time intervals which results in memory churn, poor locality and performance degradation. These issues are already known for a decade, but due to the com…
View article: Memprof - Memory Allocation Profiling Tool For Real-World Applications
Memprof - Memory Allocation Profiling Tool For Real-World Applications Open
Project Specification This project aims to build a memory allocation profiling on top of the popular dynamic analysis framework Valgrind, able to detect heap memory waste or misusage. The project is divided in several components: 1. Track …
View article: Triggering events with GPUs at ATLAS
Triggering events with GPUs at ATLAS Open
The growing complexity of events produced in LHC collisions demands more and more computing power both for the online selection and for the offline reconstruction of events. In recent years, the explosive performance growth of massively pa…
View article: An evaluation of GPUs for use in an upgraded ATLAS High Level Trigger
An evaluation of GPUs for use in an upgraded ATLAS High Level Trigger Open
ATLAS is a general purpose particle physics experiment located on the LHC collider at CERN. The ATLAS Trigger system consists of two levels, the first level (L1) implemented in hardware and the High Level Trigger (HLT) implemented in softw…
View article: Use of hardware accelerators for ATLAS computing.
Use of hardware accelerators for ATLAS computing. Open
Modern HEP experiments produce tremendous amounts of data. This data is processed by in-house built software frameworks which have lifetimes longer than the detector it- self. Such frameworks were traditionally based on serial code and rel…