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Contents

• 1 Introduction
• 2 Presentations
  • 2.1 Advanced Gamma Tracking Array
  • 2.2 Orsay Tandem
  • 2.3 Scanning tabble for detector characterisation
  • 2.4 StratusLab project
  
  
• 3 GRU: Ganil Root Utility
  • 3.1 Ganil DAQ
  • 3.2 Root
  • 3.3 GRU Core
  • 3.4 GRU client
  
  
• 4 Open hardware project
• 5 Understanding Narval
  • 5.1 Vovabulary
  • 5.2 Configuration files
  • 5.3 Ada Actor's process
  • 5.4 A three layers framework
  • 5.5 Buffer API

1 Introduction

Historicaly from OASIS. Under GPL. Unique data link replaced by Data Flow concept (TCP, shared memory...)

$ svn co http://csngwinfo.in2p3.fr:2401/narval # login=passwd=narval

2 Presentations

2.1 Advanced Gamma Tracking Array

6660 electronic channels photon tracking. 2 kind of detectors (main + ancillary).

• Acquisition layer
• Configuration layer
• Permanant layer

2.2 Orsay Tandem

Located at paris-sud campus. VME crate:

• 5 aquisition cards with 6 channels
• 1 ressource manager card

Event building from:

• Tandem detector
• X-ray camera

Architecture:

• Shared libraries compiled outside Narval environment.
• XML configuration file
• CVISU: spectra visualisation (coeficients, thresholds, not based on root)

Carte cometh: 40Mb.s-1

2.3 Scanning tabble for detector characterisation

Scanning table for Agata (ENX+Narval). ViGru for spectrum monitoring

• Start/Stop
• Set and get somes parameters

2.4 StratusLab project

cloud we use for the formation.

3 GRU: Ganil Root Utility

GRU = ROOT + Ganil C++ libraries

3.1 Ganil DAQ

• Gloal Run Control Core
• Electronic Control Core

3.2 Root

Developped by René Brun. Root embedded CINT (C interpreter like shell).

3.3 GRU Core

http://wiki.ganil.fr/Documentation/Gru Online + Offline.

• Input device get buffer from diferents devices.
• Output spectra (histograms+graphs+data vectors) to TList Root)
• Soap server to get commands

3.4 GRU client

• Many sources (DB, HD, Soap: use as an osciloscop to debug electronic)
• Configuration via xml.
• Can fit curves
• Cutting curves into a new pad (new histogram store into the server updated online)

4 Open hardware project

CERN Open Hardware Licence. CERN, GSI, Soleil.

5 Understanding Narval

5.1 Vovabulary

Process:

• Producer
• Intermediary (like a switch n->m)
• Consumer
• Narval naming services (register sub systems)
• aws_shell / soap protocol / werewolf (GUI)
• central log
• coordinator (state machine)

5.2 Configuration files

Narval use polyorb to connect server following the topology.

• polyorb narval.conf
• topology .xml
• script (parralized orders for an automatic run)

5.3 Ada Actor's process

Ada actors (linked with narval sources) gives access to full Ada API:

• Inherit from Active_Actor_Type
• Override Buffer_handling (get/put)
• Override On_Start/On_Stop/... methods

Ada actor as shared library (only one generic actor type):

• Easy to compile
• Access to partial API
• Inherit from Actor_Interface
• Need to overide all the API

5.4 A three layers framework

$ narval_launch
$ ps -ef

nroche    1983     1  0 15:27 ?        00:00:00 SCREEN -m -d po_cos_naming --polyorb-iiop-polyorb-protocols-iiop-default_port=2809
nroche    1985     1  0 15:27 ?        00:00:00 SCREEN -m -d -c /etc/narval/screen_commands_for_narval
nroche    1986  1983  0 15:27 pts/2    00:00:00 po_cos_naming --polyorb-iiop-polyorb-protocols-iiop-default_port=2809
nroche    1987  1985  0 15:27 pts/3    00:00:00 narval_naming_service
nroche    1988  1985  0 15:27 pts/4    00:00:00 central_log --log_level info
nroche    1989  1985  0 15:27 pts/5    00:00:00 aws_shell --aws_server_port 6080 --automatic-script-loading

• Permanent layer: naming services, aws shell, central log
  Narval_Naming_Services make Fat pointers for remote call interface. Exception are spread over the network.
  aws_shell is a bridge offering SOAP services (2 commands: send and send with arg).
  central log based on log4Ada and can be connected throuht log4j (java).
• Coordination layer: sub system 1,2...
  sub_system_coordinator embed the state machine and manage actors (launch, send orders...)
• Acquisition layer: actors
  generic_... to load C++/Java/... shared libraries.
  data_rate_... to test rates.
  generic_ada_actors to load Ada shared libraries.

5.5 Buffer API

It is a new buffer for each transfert: cannot read while still writing in.

• Common interface
• Buffer_Handle_Type embed all needed information about the buffer
• Host interface (remote buffer are still managed by an host)
• Produce interface
• Consume interface

Buffer pool:

• cf man 7 mq_overview
• IPC++

Infiniband ?

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