ICALEPCS2013 - List of Authors (Gorbonosov, R.)

Paper

Title

Page

Plug-in Based Analysis Framework for LHC Post-Mortem Analysis

446

R. Gorbonosov, V. Baggiolini, G. Kruk, M. Zerlauth
CERN, Geneva, Switzerland

Plug-in based software architectures are extensible, enforce modularity and allow several teams to work in parallel. But they have certain technical and organizational challenges, which we discuss in this paper. We gained our experience when developing the Post-Mortem Analysis (PMA) system, which is a mission-critical system for the Large Hadron Collider (LHC). We used a plugin-based architecture with a general-purpose analysis engine, for which physicists and equipment experts code plug-ins containing the analysis algorithms. We have over 45 analysis plug-ins developed by a dozen of domain experts. This paper focuses on the design challenges we faced in order to mitigate the risks of executing third-party code: assurance that even a badly written plug-in doesn't perturb the work of the overall application; plug-in execution control which allows to detect plug-in misbehavior and react; robust communication mechanism between plug-ins, diagnostics facilitation in case of plug-in failure; testing of the plug-ins before integration into the application, etc.
https://espace.cern.ch/be-dep/CO/DA/Services/Post-Mortem%20Analysis.aspx

Poster MOPPC143 [3.128 MB]

THPPC058

LSA - the High Level Application Software of the LHC - and Its Performance During the First Three Years of Operation

1201

D. Jacquet, R. Gorbonosov, G. Kruk
CERN, Geneva, Switzerland

The LSA (LHC software architecture) project was started in 2001 with the aim of developing the high level core software for the control of the LHC accelerator. It has now been deployed widely across the CERN accelerator complex and has been largely successful in meeting its initial aims. The main functionality and architecture of the system is recalled and its use in the commissioning and exploitation of the LHC is elucidated.

Poster THPPC058 [1.291 MB]

THPPC079

Using a Java Embedded DSL for LHC Test Analysis

1254

M. Audrain, D. Anderson, K. Fuchsberger, J.C. Garnier, R. Gorbonosov, A.A. Gorzawski, A. Jalal, K. Stamos, J. Suchowski, P.C. Turcu, M. Zerlauth
CERN, Geneva, Switzerland

The Large Hadron Collider (LHC) at CERN requires many systems to work in close cooperation. All systems for magnet powering and beam operation are qualified during dedicated commissioning periods and retested after corrective or regular maintenance. Already for the first commissioning of the magnet powering system in 2006, the execution of such tests was automated to a high degree to facilitate the execution and tracking of the more than 10.000 required test steps. Most of the time during today’s commissioning campaigns is spent in analysing test results, to a large extend still done manually. A project was launched to automate the analysis of such tests as much as possible. A dedicated Java embedded Domain Specific Language (eDSL) was created, which allows system experts to describe desired analysis steps in a simple way. The execution of these checks results in simple decisions on the success of the tests and provides plots for experts to quickly identify the source of problems exposed by the tests. This paper explains the concepts and vision of the first version of the eDSL.

Poster THPPC079 [1.480 MB]

Paper	Title	Page
MOPPC143	Plug-in Based Analysis Framework for LHC Post-Mortem Analysis	446
	R. Gorbonosov, V. Baggiolini, G. Kruk, M. Zerlauth CERN, Geneva, Switzerland
	Plug-in based software architectures are extensible, enforce modularity and allow several teams to work in parallel. But they have certain technical and organizational challenges, which we discuss in this paper. We gained our experience when developing the Post-Mortem Analysis (PMA) system, which is a mission-critical system for the Large Hadron Collider (LHC). We used a plugin-based architecture with a general-purpose analysis engine, for which physicists and equipment experts code plug-ins containing the analysis algorithms. We have over 45 analysis plug-ins developed by a dozen of domain experts. This paper focuses on the design challenges we faced in order to mitigate the risks of executing third-party code: assurance that even a badly written plug-in doesn't perturb the work of the overall application; plug-in execution control which allows to detect plug-in misbehavior and react; robust communication mechanism between plug-ins, diagnostics facilitation in case of plug-in failure; testing of the plug-ins before integration into the application, etc. https://espace.cern.ch/be-dep/CO/DA/Services/Post-Mortem%20Analysis.aspx
	Poster MOPPC143 [3.128 MB]

THPPC058	LSA - the High Level Application Software of the LHC - and Its Performance During the First Three Years of Operation	1201
	D. Jacquet, R. Gorbonosov, G. Kruk CERN, Geneva, Switzerland
	The LSA (LHC software architecture) project was started in 2001 with the aim of developing the high level core software for the control of the LHC accelerator. It has now been deployed widely across the CERN accelerator complex and has been largely successful in meeting its initial aims. The main functionality and architecture of the system is recalled and its use in the commissioning and exploitation of the LHC is elucidated.
	Poster THPPC058 [1.291 MB]

THPPC079	Using a Java Embedded DSL for LHC Test Analysis	1254
	M. Audrain, D. Anderson, K. Fuchsberger, J.C. Garnier, R. Gorbonosov, A.A. Gorzawski, A. Jalal, K. Stamos, J. Suchowski, P.C. Turcu, M. Zerlauth CERN, Geneva, Switzerland
	The Large Hadron Collider (LHC) at CERN requires many systems to work in close cooperation. All systems for magnet powering and beam operation are qualified during dedicated commissioning periods and retested after corrective or regular maintenance. Already for the first commissioning of the magnet powering system in 2006, the execution of such tests was automated to a high degree to facilitate the execution and tracking of the more than 10.000 required test steps. Most of the time during today’s commissioning campaigns is spent in analysing test results, to a large extend still done manually. A project was launched to automate the analysis of such tests as much as possible. A dedicated Java embedded Domain Specific Language (eDSL) was created, which allows system experts to describe desired analysis steps in a simple way. The execution of these checks results in simple decisions on the success of the tests and provides plots for experts to quickly identify the source of problems exposed by the tests. This paper explains the concepts and vision of the first version of the eDSL.
	Poster THPPC079 [1.480 MB]