Post Mortem

Roberto Saban TS/HDO HCWG 050526

Post Mortem

Systems

Binary data sent over CMW

PM server

Binary files

ASCII files

PM analysis tools

CMW

QPS

Browser Other analysis tools

PICPC

PM Server(CMW)

PM Client PM Client PM Client

Lynx OS Lynx OS (FESA) LinuxCourtesy G.Kruk


Post Mortem (PM Client)

PM Client functionality:

Wrapper to CMW client used by systems to send the PM data

Takes care of re-sending data in case of communication problems

Possibly saves data locally* in case of unsuccessful transfer or even before sending the data - What to do in a diskless system?

Possibly checks availability of the PM server (heart beat)

Possibly sends alarms to the Laser system in case of problems

Courtesy G.Kruk


Post Mortem (PM Client)

Advantages of having the PM Client:

Decreases work which probably would have to be repeated in all systems

Simplifies and decreases testing (one code instead of several)

Takes care of correct formatting data sent to the server (all required fields, etc.) and decreases a risk that the server will receive unexpected data

If for some reason there is a need to modify the interface (protocol, data formatting, …) it will be modified (and tested) only once in the Client code instead of asking each system to adapt their code.

…

Courtesy G.Kruk


Post Mortem (Issues + further work)

Implementation of the PM Client (which seems to be a good idea)

Implementation of operational version of the PM Server

Data transfer over CMW (will be solved soon)

Define configurations and descriptors of the PM data sent by all involved systems (used to convert binary to ASCII files and possibly used by analysis tools)

Select the data that should be stored permanently (in a database) and Write an appropriate application which will do it

Move the PM Server to an operational machine and provide space and directory structure

Courtesy G.Kruk


Post Mortem

Systems

Binary data sent over CMW

PM server

Binary files

ASCII files

PM analysis tools

CMW

QPS

Browser Other analysis tools

PICPC

PM Server(CMW)

PM Client PM Client PM Client

Lynx OS Lynx OS (FESA) LinuxCourtesy G.Kruk

A

B


interface A

functionalities visualisation of predefined

sets of field variables verification of the occurrence of

the expected sequence of events

signal processing to identify properties of circuits such as time constants

pm system <-> users


interface Apm system <-> users

Courtesy A.Rijllart


interface B

functionalities triggering data transfer integrity data format

not just SDDS, Rosali or binary the existence & the tagging of the

trigger handling of multiple triggers

API definition dimensioning i.e. definition of

data rates and data volumes

pm system <-> client systems


milestones

use cases specification document

definition of interface A definition of interface B

prototype first release beginning of power

tests

mid june 2005

mid july 2005

end july 2005

end october 2005

LHC-D-HCP-0006 Automated procedures for powering the superconducting circuits to nominal current

end july 2005

first week of december 2005

Post Mortem

Documents

Transcript of Post Mortem