Grid porting of Bhabha scattering code through a master-worker scheme

TL;DR

This paper demonstrates the successful porting of a Bhabha scattering calculation program to the EGEE Grid infrastructure using a master-worker scheme, enabling efficient, unattended high-energy physics computations for collider experiments.

Contribution

It introduces a novel application of a master-worker scheme with GridWay metascheduler for porting complex physics code to a distributed grid environment.

Findings

Unattended job execution was efficient and reliable.

The porting approach supports high-energy physics calculations on the Grid.

The results validate the use of small angle Bhabha scattering for collider luminosity measurements.

Abstract

A program calculating Bhabha scattering at high energy colliders is considered for porting to the EGEE Grid infrastructure. The program code, which is a result of the aITALC project, is ported by using a master-worker operating scheme. The job submission, execution and monitoring are implemented using the GridWay metascheduler. The unattended execution of jobs turned out to be complete and rather efficient, even when pre-knowledge of the grid is absent. While the batch of jobs remains organized at the user's side, the actual computation was carried out within the phenogrid virtual organization. The scientific results support the use of the small angle Bhabha scattering for the luminosity measurements of the International Linear Collider project.