ICALEPCS1991 - List of Authors (Clout, P.N.)

Paper	Title	Page
S07IC05	The Influence of Industrial Applications on a Control System Toolbox	287
	P.N. Clout VISTA, Los Alamos, NM, USA
	V system is as an open, advanced software application toolbox for rapidly creating fast, efficient and cost-effective control and data-acquisition systems. V system’s modular architecture is designed for single computers, networked computers and workstations running under VAX/VMS or VAX/ELN. At the heart of Vsystem lies Vaccess, a user extendible real-time database and library of access routines. The application database provides the link to the hardware of the application and can be organized as one database or separate databases installed in different computers on the network. Vsystem has found application in charged particle accelerator control, tokamak control, and industrial research. as well as its more recent industrial applications. This paper describes the broad features of Vsystem and the influence that recent industrial applications have had on the software.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC05
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S08NC10	Network Performance for Graphical Control Systems	326
	P.N. Clout, M. Geib, R. Westervelt VISTA, Los Alamos, NM, USA
	Vsystem is a toolbox for building graphically-based control systems. The real-time database component, Vaccess, includes all the networking support necessary to build multi-computer control systems. Vaccess has two modes of database access, synchronous and asynchronous. Vdraw is another component of Vsystem that allows developers and users to develop control screens and windows by drawing rather than programming. Based on Xwindows, Vsystem provides the possibility of running Vdraw either on the workstation with the graphics or on the computer with the database. We have made some measurements on the cpu loading, elapsed time and the network loading to give some guidance in system configuration performance. It will be seen that asynchronous network access gives large performance increases and that the network database change notification protocol can be either more or less efficient than the X-window network protocol, depending on the graphical representation of the data.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC10
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S20PD02	Summary of Panel Discussion on Standards and World-Wide Sharing of Software	597
	P.W. Lucas, C.I. Briegel Fermilab, Batavia, Illinois, USA P.N. Clout VISTA, Los Alamos, NM, USA D.P. Gurd SSCL, Dallas, TX, USA N. Kanaya KEK, Ibaraki, Japan U. Raich CERN, Meyrin, Switzerland
	It has been a dream in the accelerator community for some time that software developed for one control system be easily transferable to and usable at another. Until recently this goal was seldom realized in practice. This has been primarily because the various control systems have been developed inhouse with little standardization among them. The world of accelerators was dominated until a few years ago by very large machines constructed for doing high energy physics. The large laboratories could likewise afford large controls groups, which were able to build these complete systems from the ground up. However the accelerator scene has now shifted, with a large fraction of the new work being done at much smaller installations, installations which cannot afford the large staffs previously employed in control system production. Different approaches to this problem were outlined in the discussion.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S20PD02
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

The Influence of Industrial Applications on a Control System Toolbox

287

P.N. Clout
VISTA, Los Alamos, NM, USA

V system is as an open, advanced software application toolbox for rapidly creating fast, efficient and cost-effective control and data-acquisition systems. V system’s modular architecture is designed for single computers, networked computers and workstations running under VAX/VMS or VAX/ELN. At the heart of Vsystem lies Vaccess, a user extendible real-time database and library of access routines. The application database provides the link to the hardware of the application and can be organized as one database or separate databases installed in different computers on the network. Vsystem has found application in charged particle accelerator control, tokamak control, and industrial research. as well as its more recent industrial applications. This paper describes the broad features of Vsystem and the influence that recent industrial applications have had on the software.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S07IC05

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S08NC10

Network Performance for Graphical Control Systems

326

P.N. Clout, M. Geib, R. Westervelt
VISTA, Los Alamos, NM, USA

Vsystem is a toolbox for building graphically-based control systems. The real-time database component, Vaccess, includes all the networking support necessary to build multi-computer control systems. Vaccess has two modes of database access, synchronous and asynchronous. Vdraw is another component of Vsystem that allows developers and users to develop control screens and windows by drawing rather than programming. Based on Xwindows, Vsystem provides the possibility of running Vdraw either on the workstation with the graphics or on the computer with the database. We have made some measurements on the cpu loading, elapsed time and the network loading to give some guidance in system configuration performance. It will be seen that asynchronous network access gives large performance increases and that the network database change notification protocol can be either more or less efficient than the X-window network protocol, depending on the graphical representation of the data.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S08NC10

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S20PD02

Summary of Panel Discussion on Standards and World-Wide Sharing of Software

597

P.W. Lucas, C.I. Briegel
Fermilab, Batavia, Illinois, USA
P.N. Clout
VISTA, Los Alamos, NM, USA
D.P. Gurd
SSCL, Dallas, TX, USA
N. Kanaya
KEK, Ibaraki, Japan
U. Raich
CERN, Meyrin, Switzerland

It has been a dream in the accelerator community for some time that software developed for one control system be easily transferable to and usable at another. Until recently this goal was seldom realized in practice. This has been primarily because the various control systems have been developed inhouse with little standardization among them. The world of accelerators was dominated until a few years ago by very large machines constructed for doing high energy physics. The large laboratories could likewise afford large controls groups, which were able to build these complete systems from the ground up. However the accelerator scene has now shifted, with a large fraction of the new work being done at much smaller installations, installations which cannot afford the large staffs previously employed in control system production. Different approaches to this problem were outlined in the discussion.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S20PD02

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)