Posts
A post via Hugo
I finally replaced my 10 year old contact page with this one based on the
Hugo
static site generator and Emacs
org-mode
and its hugo exporter
ox-hugo
. It is probably not much nicer yet, but
already much easier to maintain. Since Hugo
sites are completely static I won’t
attract the usual wordpress
spam and I now have all site content in a single
org-mode file.
CERN coordinates
Dirk Duellmann
section leader analytics & design
Storage group
CERN IT department
Route de Meyrin
1211 Geneva 23
Bat 31 / 2-004
dirk.duellmann@cern.ch
Tel. +41 22 767 4937
Mobile +41 75 411 2975
UNIL info
During spring semester 2018 I run the course “Advanced Data Analysis” at the University of Lausanne (UNIL) in the Faculty of Buisiness and Economics (HEC).
The course syllabus is here, course material (slides, excercises, example code) at the UNIL moodle.. The exam session will take place on 28 July 2018.
Dr Dirk Duellmann
dirk.duellmann@cern.ch (please use my CERN rather than UNIL email)
Tel. +41 22 767 4937
Private coordinates
Dirk Duellmann
671 Rue de Fenieres
01710 Thoiry
France
dirk@dirkduellmann.com
Tel.: +33 450208298
Outside work interests
Work interests
A high energy physicist by education, I am for more than two decades involved in the design, development and deployment of large scale distributed data handling systems, raging from object and relational databases to distributed storage clusters.
Today, I spend a significant fraction my time with the statistical analysis of data center metrics in order to optimise the efficiency of scientific analysis workflows.
Main areas of interest are currently:
- interaction between storage and CPU efficiency
- quantification of WAN latency impact of specific science workflows
- analysis of storage media failure rates in a population of 50k disk units
Education
- 1995 PhD degree in physics, University of Hamburg
- 1990 Diplom degree in physics, University of Hamburg
- 1986 Physics and computer science studies at University of Muenster and Hamburg
Current Responsibilities
Currently, I am leading the Analytics and Development section of CERN’s storage group, responsible for the design and evolution of CERN’s high performance disk pools for physics data analysis. I also chair a working group for Infrastructure Analytics in CERN’s IT department.
Other Roles and Memberships
- Part-time lecturer for Advanced Data Analysis at University of Lausanne
- Leader of the LHC Computing Grid (WLCG) project for persistency framework development
- Leader of the WLCG Distributed Database Deployment project
- Organiser of XLDB Europe 2013 and session organiser XLDB Europe 2017
- Program comittee chair of Computing in High Energy Physic (CHEP) 2012
- Invited reviewer at ESA (2001), NIF(2011) and LHC experiment (ATLAS, LHCb, CMS) project reviews
- Ph.D project supervisior or Ph.D thesis supervisor at (Univ. Vienna (2001), Univ. Paris (2006) and Braunschweig Univ. of Technology)
- CERN Summer Student Lecture Program Committee (2007-2013), responsible for computing related lectures
- ACM member and frequent reviewer of storage related publications
Selected Presentations
- Invited speaker at DevDays 2017 (Vilnius), CRUNCH 2016 (Budapest), UseR 2016 (Stanford), Apache BigData 2015 (Budapest), GOTO 2012 (Aarhus)
- Invited as external expert to ISAT Storage Meeting 2016 (Ney York), ReThink Big, Roadmap for European Technologies for Big Data, project meetings (2015)
- Invited lecturer representing the LHC Computing Grid at the first CERN – Thailand Computing School, Bangkok, Thailand 2010.
- Back-end storage - use as a true archive, WLCG Data & Storage Management Jamboree, Amsterdam, June 2010
- Invited CHEP plenary, Distributed Data and Meta Data Management, CHEP 2009, Prague, Czech Republic
- Petabyte Scale Data Management for LHC, Workshop on Data Storage, ESRF Grenoble, June 2008
- Presented CERN’s grid and database activities in a keynote talk by Intel CEO Paul Otellini at the Oracle Open World Conference 2007
- Lecturer at the 1998, 2001 and 2004 CERN School of Computing
- DEXA 2000 - paper on File replica consistency in a Grid environment, 2000
- Invited Talk about ODBMS Data Stores in HEP at the 2000 OMG ObjectWorld conference in Frankfurt, Germany
- Invited tutorial on Petabyte Object Databases at the 1999 ACM SIGMOD/PODS conference - Philadelphia, USA
Publications
- My list of publications (status 2016) is available as PDF from here.
- A more up-to-date / complete list can be otained from Inspire.
- There are also a few links / references at my ResearchGate entry.