HPC @ Uni.lu

High Performance Computing in Luxembourg

The University of Luxembourg operates since 2007 an High Performance Computing platform which is currently featuring a total of nodes (in practice, computing cores) for a cumulative computing power estimated to TFlops.

The total raw storage capacity shared within the clusters is currently estimated to TB (NFS + Lustre).

The effective usage of this complex platform is not an easy task and requires both talent and system skills to understand the impact of our personal workflow on the global performances of the system.

The UL HPC management team, together with leading computational scientists of the UL and HPC technologists will offer instructions and practical sessions on a variety of topics, including:

  • Access to and interaction with the UL HPC infrastructures
  • HPC challenges, especially as regards data and storage management
  • HPC workflow management
  • HPC Programming and Usage of the main softwares available on the platform (Mathlab, R, MPI etc.)
  • Performance analysis, debugging & profiling
  • Scientific visualization

The aim is to cover basic as well as advanced usage of the platform. Whether you are an HPC newbies or an advanced user, don’t miss this unique opportunity to learn more about the efficient usage of the system.

The first edition of the UL HPC School has taken place on:
May 6th and 7th, 2014, on the Kirchberg campus, the “Salle Paul Feidert”


All sessions will take place at the Kirchberg Campus, mainly in the Paul Feidert Room.

Important You are expected to bring your personal laptop for all sessions since there will be no workstation available on site.

All tutorials proposed as practical sessions are available on GitHub.
The detailed program is available here.

Agenda - Day 1 (May 6th, 2014)

May 6th By Title Location
9h00-9H10 S. Varrette Opening P. Feidert
9h10-10h15 S. Varrette Keynote: HPC platforms @ UL: Overview and Usage P. Feidert
10h15-10h30   Coffee break P. Feidert
10h30-11h15 S. Varrette PS1: Getting Started (ssh, scp, rsync, oar, modules, builds) P. Feidert
11h15-12h30 H. Cartiaux PS2: HPC workflow with sequential jobs (C,python,java) P. Feidert
12h30-13h30   LUNCH  
13h30-14h30 S. Varrette PS3: HPC workflow with MPI jobs Ex: OSU MB/HPL * P. Feidert
14h30-16h30 S. Grimonet PS4: Direct, Reverse and parallel Memory debugging with TotalView P. Feidert
16h30-17h30   Roguewave Open discussion and Day 1 Closing P. Feidert

PS = Practical Session using your laptop

*this session have been rescheduled on May 7th

Agenda - Day 2 (May 7th, 2014)

May 7th By Title Location
9h30-10h00 S.Varrette Follow-up Keynote: Last HPC challenges P. Feidert
10h00-10h45   Keynote: Experience reports from top users P. Feidert
  J. Berryman HPC usage in the UL Soft Matter Theory Group P. Feidert
  V. Satagopam HPC@Uni.lu: a Bio-Core user experience P. Feidert
  X. Besseron XDEM Research on UL HPC platform P. Feidert
  J.Muszynski P2P Java experiments on the UL HPC Platform P. Feidert
  F. Pinel Uni.lu HPC usage P. Feidert
10h45-11h00   Coffee break P. Feidert
11h00-11h55 V.Plugaru PS5: Using Matlab on the UL HPC Platform P. Feidert
11h55-12h30 J. Emeras PS6: Using R on the UL HPC Platform P. Feidert
12h30-13h30   LUNCH  
13h30-14h30 V.Plugaru PS7: Bio-informatic softwares on the UL HPC Platform P. Feidert
14h30-16h00 P. Wohlschlegel PS8: Unified profiling and debugging with Allinea P. Feidert
16h00-16h30   Allinea Open discussion P. Feidert
16h30-17h00 S.Varrette (Rescheduled) PS3: HPC workflow with MPI jobs Ex: OSU MB/HP P. Feidert
17h00-17h10 S.Varrette Closing P. Feidert

Practical information


The HPC school will be organized at the campus Kirchberg of the University of Luxembourg.

University of Luxembourg, campus Kirchberg
6, rue Richard Coudenhove - Kalergi,
L-1359, Luxembourg (Kirchberg)
49°37’34.3”N 6°09’30.9”E (49.626201, 6.158596)


By bus, from the airport

Take the bus 16 (every 10/25 minutes), get off at stop Coudenhove-Kalergi

By bus, from the train station

Several choices:

  • Bus 18 (every 8 minutes), get off at stop Université - Campus Kirchberg
  • Bus 16, 192, 120, 1, get off at stop Coudenhove-Kalergi (after the Cocque, the sport center of the Kirchberg plateau).

More information: Mobilitait Zentral

By car

You can park your car on the campus, or more probably at the parking Adenauer

2014 Edition Feedback

Now that the HPC School 2014 took place, we are able to propose a first feedback.

  • 66 participants registered (including 1 external and 1 SnT visitor) distributed as follows:
Institute Number of persons Percentage
FDEF (incl. 4 LSF) 7 10,61 %
FLSHASE 1 1,52 %
FSTC 29 43,94 %
LCSB 17 25,76 %
SnT (incl. 1 visitor) 8 12,12 %
Externals 1 1,52 %
Master Students 3 4,55 %
TOTAL: 66  

UL HPC School 2014 Participants Pie Chart

A satisfactory form has been proposed to the participants for each day and the global feedback is very positive. We now seek a yearly event, and possibly a more frequent session targeting only new users.