1. CERN Openlab: my transition from science to business
CERN Openlab alumni talk
CERN Openlab: my transition from science to business
Maaike Limper 21/09/2017

2. Outline
(why I’m not at work right now…) Before Openlab My CERN Openlab fellow My career since Openlab CERN Openlab: lessons learnt

3. Before Openlab One of the many physicists at CERN…
Master in Particle Physics at University of Amsterdam
First time at CERN as Summer Student in 2003!
PhD in Particle Physics
Building the ATLAS SemiConductor Tracker (SCT)
Testing and installation of SCT at CERN
Software development for track and vertex reconstruction
Post-doctoral researcher for University of Iowa
based at CERN
First physics analysis with LHC data in ATLAS
Prompt Reconstruction Coordinator for ATLAS
“Co-discovered the Higgs-boson” along with others thousands of physicists…

4. My CERN Openlab fellow SQL-based approached to physics analysis:
How to discover the Higgs boson in an Oracle database
SQL-based approached to physics analysis:
Databases allow us to do much more than store calibration constants and conditions
Complex SQL with analytics-functions or precompiled procedures allow to do event filtering and calculations directly in the database
SQL-analysis of basic physics data potentially faster than ROOT-based analysis
Physics data has many attributes per row, making it more suitable to be kept in column-storage and partitioned in files across the grid for easy parallel processing

5. My CERN Openlab fellow A + B + C = D D What I actually discovered
ROOT/PROOF is optimized for physics:
Hard to improve using database analysis!
Though users don’t always make optimum use of its features
But great test-case for complex DB-analysis:
Sequential scan vs index look-up
Column vs row-based storage
Love-hate relationship with SQL optimizer
Use of partitions/distributed processing
Hadoop vs PROOF vs Oracle RAC: Any distributed data processing ultimately comes down to the same thing, optimize your partitioning to push down your joins! A6 B6 C6 D6 E6 A6 B6 C6 D6 E6 A + B + C = D A1 B1 C1 A2 B2 C2 D A3 B3 C3 A4 B4 C4

6. My career since Openlab
The final frontier of connectivity
SITA OnAir:
Business data analyst
Inmarsat:
Head of Aviation Service Performance

7. Aviation Service Performance
Data-driven approach to performance monitoring
Inmarsat Aviation has a dedicated team for Service Performance
Our mission: ‘to turn data into information’
Data collected from all IFC systems is analysed using advanced custom data- processing solution and dedicated tools provide monitoring, customer analytics and enable data-sharing with our customer

8. The all devouring data-engine
“Any sufficiently advanced technology is indistinguishable from magic”
Automatic processes extract, consolidate and aggregate data from every possible data source Correlating data from different sources allow unique opportunities to study performance dependencies between our systems … pre-processed data is presented through a variety of internal and external reporting tools.
On-Board portal-logs
Portal content usage
User-agent: Device/OS
System events
The all-devouring data-engine
Allows Inmarsat support teams to proactively troubleshoot problems
Inmarsat Internal Performance Monitoring
ISP server-logs
ISP portal usage
User-agent: Device/OS
Inmarsat network data
Terminal status
Terminal statistics
Terminal messages
ISP sessions data
Payment method
Session type
User id
Unique device ID
Remote Maintenance View
Allows external maintenance teams to monitor IFC status in real-time
Airline: movement data
OOOI timestamps
Customer Monthly Reports
SNMP Polling
Discrete system status
ARINC
MIBs
Flexible solutions to share pre-processed data with our Customer
Ping utility
Customer Analytics Portal
Latency
Outage timestamps
Netflow
Bytes/packets per IP
Unique device IP
Customer API
Sandvine DPI
Usage by category
Whitelisted sites usage

9. CERN Openlab: lessons learnt
What working at CERN has taught me
No Higgs boson without IT
Multi-culturalism
Lateral thinking
DIY
Don’t trust technology
Love, trust & respect your data