The 7th Workshop on
UnConventional High Performance Computing 2014 (UCHPC 2014)
August 25/26, Porto, Portugal

held in conjunction with
Euro-Par 2014, August 25 - August 29, 2014
Porto, Portugal

Important Dates

Call for Papers
in txt format

Previous UCHPC
2013 @ EuroPar'13
2012 @ EuroPar'12
2011 @ EuroPar'11
2010 @ EuroPar'10
2009 @ CF'09
2008 @ ICCSA'08

EuroPar 2014
Conference Home


September 9, 2014
  • Talk slide links in the program
  • Authors: please upload your camera-ready paper to EasyChair until Oct. 3


Recent issues with the power consumption of conventional HPC hardware results in both new interest in accelerator hardware and in usage of mass-market hardware originally not designed for HPC. The most prominent examples are GPUs, but FPGAs, DSPs and embedded designs are also possible candidates to provide higher power efficiency, as they are used in energy-restriced environments, such as smartphones or tablets. The so-called "dark silicon" forecast, i.e. not all transistors may be active at the same time, may lead to even more specialized hardware in future mass-market products. Exploiting this hardware for HPC can be a worthwhile challenge.

As the word "UnConventional" in the title suggests, the workshop focuses on usage of hardware or platforms for HPC, which are not (yet) conventially used today, and may not be designed for HPC in the first place. Reasons for its use can be raw computing power, good performance per watt, or low cost in general. To address this unconventional hardware, often, new programming approaches and paradigms are required to make best use of it. Another focus of the workshop is on innovative, (yet) unconventional new programming models, and algorithms (e.g. Big Data) exploiting unconventional HPC hardware or software.

To this end, UCHPC tries to capture solutions for HPC which are unconventional today but could become conventional and significant tomorrow, and thus provide a glimpse into the future of HPC.


The goal of the workshop is to present latest research in how hardware and software (yet) unconventional for HPC is or can be used to reach goals such as best performance per watt. UCHPC also covers according programming models, compiler techniques, and tools. Thus, suggested topics for papers include, but are not limited to the following:
  • Innovative use of hardware and software unconventional for HPC
  • HPC applications or visualizations in connection with HPC on GPUs (GPGPU), using GPUs embedded on processor dies (as found in AMD Fusion/APUs, NVidia Denver, Intel Ivy Bridge), Intel's MIC and SCC, low power/embedded processors (including DSPs, Adapteva Epiphany), FPGAs (e.g. Convey), Tilera's tile-based many-core processors, IBM Cell BE, accelerators, visualization cards, etc.
  • Cluster/Grid solutions using unconventional hardware, e.g. clusters of game consoles, nodes using GPUs, Low Power/Embedded Processors, MPSoCs, new many-cores from Intel and/or ARM designs, Mac Minis/AppleTVs, FPGAs etc.
  • Heterogeneous computing on hybrid platforms
  • Work on and use of new programming models and paradigms needed to support unconventional hardware, and hybrid/hierarchical combinations with more conventional systems. Examples are OpenACC, OpenCL, Cilk+, and task-based approaches for heterogeneous systems
  • Performance and scalability studies in HPC using unconventional hardware
  • Reconfigurable computing for HPC
  • Performance modeling, analysis and tools for HPC with unconventional hardware
  • New/modified or unconventional programming models for HPC, including e.g. PGAS or task-based concepts
  • Big data and/or deep learning using unconventional HPC hardware or software

Best Paper Award

As last year, we had a best paper award. The winning paper was "On Portability, Performance and Scalability of a MPI OpenCL Lattice Boltzmann Code" (Enrico Calore, Sebastiano F. Schifano and Raffaele Tripiccione). In the picture, Josef (one of the UCHPC organizers) hands out Enrico (who also did the talk) the UCHPC14 trophy. The authors also got a price, a Tegra K1 development board sponsored by NVidia. Congratulations! We hope the price may motivate another UCHPC submission.


The workshop takes place on Tuesday, August 26, 2014, in Room 3 of the computer science building of the University of Porto.

9:00 Opening
Josef Weidendorfer, Jens Breitbart
  Session 1
Chair: Josef Weidendorfer
9:10 Invited Talk
High Performance Computing on ARM Hardware - The Mont-Blanc Project (slides)
Axel Auweter, LRZ, Germany
10:00 Improving Node-level MapReduce Performance using Processing-in-Memory Technologies (slides)
Marko Scrbak, Mahzabeen Islam, Krishna Kavi, Mike Ignatowski and Nuwan Jayasena
10:30 Coffee Break
  Session 2
Chair: Jens Breitbart
11:00 On Portability, Performance and Scalability of a MPI OpenCL Lattice Boltzmann Code (slides)
Enrico Calore, Sebastiano F. Schifano and Raffaele Tripiccione
11:30 Matrix-Free Finite-Element Operator Application on Graphics Processing Units
Karl Ljungkvist
12:00 Dynamic Load Balancing with Pair Potentials (slides)
Jean-Charles Papin, Christophe Denoual, Laurent Colombet and Raymond Namyst
12:30 Lunch
  Session 3
Chair: TBA
14:00 Analysis of Parallel Applications on a High Performance Low Energy Computer (slides)
Florina Ciorba, Thomas Ilsche, Elke Franz, Stefan Pfennig, Christian Scheunert, Ulf Markwardt, Joseph Schuchart, Daniel Hackenberg, Robert Schoene, Andreas Knuepfer and Wolfgang E. Nagel
14:30 Panel
Unconventional Ideas for pressing Challanges in HPC: Easy to adopt? Panel attendees: TBA
15:15 Best Paper Award Ceremony and Workshop Closing

Invited talk

High Performance Computing on ARM Hardware - The Mont-Blanc Project
Axel Auweter from LRZ, Germany

    The ever increasing compute performance of mobile devices make the underlaying technologies interesting for High Performance Computing (HPC) applications. While these systems (of which most are based on ARM technology) have not yet entered the Top500 list, affordable development platforms have sparked interest in the scientific HPC communities.

    In 2011, the FP7-funded Mont-Blanc project set out to build the first fully-integrated ARM-based HPC prototype system. Now, three years into the project, first hardware is available to the team. Time to review the story until today and look at the potential future of HPC based on mobile device technologies.

Paper Submission, Registration, and Publication

Workshop papers must not exceed 12 single-spaced, single-column pages in LNCS style. On acceptance of the submission, at least one author is required to register for workshop attendance at Euro-Par 2014 and present the paper in the workshop.

Login in to the Euro-Par 2014 Workshop submission server (author role), select the track "Seventh Workshop on UnConventional High Performance Computing", and submit your paper in PDF format. It must not be simultaneously submitted to the main conference or any other publication outlet.

For the workshop, we will prepare hand-outs with the revised papers. These will be published after the conference in the workshop proceedings of Euro-Par 2014, part of the LNCS series of Springer.

Important Dates

June 9 May 30, 2014: Submission deadline
July 4, 2014: Author notification of acceptance
July 25, 2014: Early registration deadline
July 31, 2014: Camera ready, revised papers due
August 25/26, 2014: UCHPC'14 Workshop


International Program Committee

Michael Bader, Technische Universität München, DE
Denis Barthou, University of Bordeaux, FR
Alex Bartzas, National Technical University of Athens, GR
Lars Bengtsson, Chalmers University of Technology, SE
Jens Breitbart, Technische Universität München, DE
Giorgos Dimitrakopoulos, Democritus University of Thrace, GR
Karl Fürlinger, Ludwig-Maximilians-Universität München, DE
Dominik Goeddeke, TU Dortmund, DE
Frank Hannig, University of Erlangen-Nuremberg, DE
Anders Hast, Uppsala University, SE
Rainer Keller, Hochschule für Technik, Stuttgart, DE
Gaurav Khanna, University of Massachusetts Dartmouth, US
Harald Köstler, FAU Erlangen-Nuremberg, DE
Dimitar Lukarski, Uppsala University, SE
Manfred Mücke, Sustainable Computing Research, AT
Ioannis Papaefstathiou, Technical University of Crete, GR
Bertil Schmidt, University of Mainz, DE
Ioannis Sourdis, Chalmers University of Technology, SE
Josef Weidendorfer, Technische Universität München, DE
Jan-Philipp Weiss, COMSOL, SE
Stephan Wong, Delft University of Technology, NL
Ren Wu, Baidu, US
Yunquan Zhang, Chinese Academy of Sciences, Beijing, CN
Peter Zinterhof jun., University of Salzburg, AT

UCHPC Steering Committee

Lars Bengtsson, Chalmers University of Technology, SE
Jens Breitbart, Technische Universität München, DE
Anders Hast, Uppsala University, SE
Josef Weidendorfer, Technische Universität München, DE
Jan-Philipp Weiss, COMSOL, SE
Ren Wu, Baidu, US

UCHPC'14 Workshop Organizers

Jens Breitbart, Technische Universität München, DE
Dimitar Lukarski, Uppsala University, SE
Josef Weidendorfer, Technische Universität München, DE