FOSDEM is the biggest free and non-commercial event organized by and for the community. Its goal is to provide Free and Open Source developers a place to meet. No registration necessary.

Juan David Gonzalez Cobas
Javier Serrano
Day Sunday
Room K.1.105
Capacity 809
Start time 13:00
End time 13:50
Duration 00:50
Track Network and IO Track
CERN_OH.pdf (slides)

A strategy for managing diverse equipment in the CERN controls group

The CERN accelerator control systems access equipment distributed over a geographic area tens of kilometers across.

When off the shelf hardware is not available engineers design and prototype I/O devices as needed. With the advent of the open hardware repository, collaborations between the physics laboratories, research institutes and industry now ensure high quality designs and generality. The manufacture of these devices may be tendered out to industry and the companies involved are free to add them to their own catalogs.

The control system requires very precise timing and synchronization of control and acquisition values over a large area and a diverse array of configurable equipment connected to the accelerators. Great care is required to manage the control system timing and configuration so that remote FPGA cores are set up correctly.

The “White-Rabbit” timing project is open and addresses the future timing and synchronization needs for CERN and other laboratories. White-rabbit makes use of synchronous Ethernet and uses ideas from IEEE 1588 PTP protocol to synchronize remote equipment up to 10Km apart to better than one nanosecond.

Various control system devices at different geographic locations will have on board FPGA logic loaded dynamically by carrier FMC device drivers with configuration data. Device specific drivers then scan the FPGA configuration via a Wishbone-standard bus to determine the installation and if any further configuration is needed.

Etherbone is a software extension of the Wishbone hardware standard permitting remote FPGA cores to communicate with each other and with other control system components.

The variety of I/O peripherals, their wide range of activation mode and the requirement to move several megabytes of data per channel per second is managed by ZIO, a new I/O framework designed to handle the usual I/O channels but also pulse generation and sampling; all peripherals may also be white-rabbit-aware, so that their own timestamps are more precise than what the host computer can offer. Although ZIO examples drive simple I/O channels, the system is able to DMA directly to user space, to sustain high data rates.

Concurrent events:

When Event Track Where
11:00-17:00 LPI Item Writing Workshop Certification UA2.114
12:05-14:00 CAcert Assurance Party CAcert Ferrer
12:35-13:15 Session Border Control with SEMS Telephony and Communications H.2213
12:40-13:25 Pandora - a mobile Linux computer including gaming controls Open Source Game Development AW1.120
12:45-13:15 Graphity: an efficient neo4j based graph model for retrieving the top k news feeds for users in social networks Graph Processing AW1.125
13:00-13:25 MySQL synchronous replication in practice with Galera MySQL and Friends H.1309
13:00-13:30 CSI:Mozilla - Crash Scene Investigations Mozilla UD2.218A
13:00-13:30 Compiling Smalltalk to fast native Code Smalltalk AW1.126
13:00-13:45 Open Source Infrastructure - Running the Jenkins project with Puppet Configuration and Systems Management K.3.601
13:00-13:50 Bringing monitoring into the 21st century System Janson
13:00-13:55 Ultralightweight Kernel Service Virtualization with Rump Kernels Virtualization and Cloud Chavanne
13:00-14:00 CentOS Distribution Engineering and how you can help CrossDistribution H.1302
13:00-14:00 Distributions' infrastructure system administration (round table/Q&A) CrossDistribution H.1301
13:00-14:00 OpenICC - Colour Standards for Linux K.3.401
13:00-14:00 The microkernel overhead Microkernel OS K.3.201
13:00-14:00 Using Qt for non-graphical applications Embedded Lameere
13:00-14:45 LPI Exam Session 4 Certification Guillissen
13:00-15:00 Smart card workshop Security H.2214
13:15-13:45 The Lua Scripting Language in the NetBSD Kernel BSD K.4.201
13:20-14:00 Enhancing FreePBX with Adhearsion Telephony and Communications H.2213
13:25-14:05 Modern PerlCommerce Perl AW1.121
13:30-13:55 Practical indexing guidelines MySQL and Friends H.1309
13:30-14:00 Spoon, a minimal object programming system Smalltalk AW1.126
13:30-14:10 How to trick a developer into being a designer? CrossDesktop H.1308
13:35-14:20 Balancing a game: the open source way Open Source Game Development AW1.120
13:45-14:15 Touch your NetBSD BSD K.4.201

Next (up to 3) talks in the same room (K.1.105):

When Event Track
14:00-14:50 Why the community should welcome Average Jane and Joe Community
15:00-15:50 You're doing it wrong! Community
16:00-16:50 Caret and Stick Community

Events that start after this one (within 30 minutes):

When Event Track Where
14:00-14:50 Why the community should welcome Average Jane and Joe Community K.1.105
14:00-14:15 EPFSUG - everybody needs a hacker! Lightning Talks Ferrer
14:00-14:25 Optimizing your innodb buffer pool usage MySQL and Friends H.1309
14:00-14:30 Gervill - Beyond MIDI Free Java K.4.401
14:00-14:30 The State of Firefox Mobile Mozilla UD2.218A
14:00-14:35 Cypher Query Language Graph Processing AW1.125
14:00-14:45 DevOps is not an absolute. It's a range. Configuration and Systems Management K.3.601
14:00-14:50 Implementing Domain-Specific Languages with LLVM Development Janson
14:00-14:55 Tracing and virtualization workshop, millikernels and anykernels Virtualization and Cloud Chavanne
14:00-15:00 EFL the upcoming embedded UI toolkit Embedded Lameere
14:00-15:00 Scribus K.3.401
14:00-15:00 Automated Distribution Development and Maintenance CrossDistribution H.1302
14:00-15:00 Adventure of setting common account database for a distribution infrastructure CrossDistribution H.1301
14:00-16:30 Back to the future, (re) learn smalltalk Smalltalk AW1.126
14:05-14:45 A real Skype alternative using standards compliant FLOSS Telephony and Communications H.2213
14:10-14:55 The agony of choice - the diversity of microkernels in Genode Microkernel OS K.3.201
14:15-14:35 Rapid real-world testing using git-deploy Perl AW1.121
14:15-14:45 pkgsrc on MirBSD BSD K.4.201
14:15-14:55 Calligra - Free Office Everywhere CrossDesktop H.1308
14:20-14:35 and GNU FM - Supporting free culture artists with free software Lightning Talks Ferrer