Speaker
Mr
Xin Zhao
(Brookhaven National Laboratory,USA)
Description
ATLAS Grid production, like many other VO applications, requires the
software packages to be installed on remote sites in advance. Therefore,
a dynamic and reliable system for installing the ATLAS software releases
on Grid sites is crucial to guarantee the timely and smooth start of
ATLAS production and reduce its failure rate.
In this talk, we discuss the issues encountered in the previous software
installation system, and introduce the new approach, which is
built upon the new development in the areas of the ATLAS workload
management system (PanDA), and software package management system
(pacman). It is also designed to integrate with the EGEE ATLAS software
installation framework.
In the new system, ATLAS software releases are packaged as pacball, a
uniquely identifiable and reproducible self-installing data file. The
distribution of pacballs to remote sites is managed by ATLAS data
management system (DQ2) and PanDA server. The installation on remote
sites is automatically triggered by the PanDA pilot jobs. The
installation job payload connects to the EGEE ATLAS software
installation portal, making the information of installation status
easily accessible across OSG and EGEE Grids.
The deployment of this new system and its performance in USATLAS
production will also be discussed.
Primary author
Mr
Xin Zhao
(Brookhaven National Laboratory,USA)
Co-authors
A.S. Thompson
(University of Glasgow, United Kingdom)
Alessandro De Salvo
(Istituto Nazionale di Fisica Nucleare, Italy)
Frederick Luehring
(Indiana University,USA)
John Brunelle
(Boston University, USA)
Saul Youssef
(Boston University, USA)
Tadashi Maeno
(Brookhaven National Laboratory,USA)
Torre Wenaus
(Brookhaven National Laboratory,USA)
