Workshop on Models, Algorithms and Methodologies 

for Hierarchical Parallelism in new HPC Systems


Torun, Poland, September 11-14, 2011



in conjunction with the

9th International Conference on Parallel Processing

and Applied Mathematics PPAM 2011




Chair prof. Giuliano Laccetti Introduces the Workshop



From an architectural point of view, a High Performance Computing system can be described by means of a hierarchical multi-level structure: at the highest level there are several systems connected among them by geographic networks (System level); an intermediate level is composed by the nodes in a single system communicating among them by means of dedicated fast networks or high performance switches (Node level); at the lowest level, finally, there are several computing elements, computing cores as well as graphic accelerators, sharing resources in a single CPU (Core level). These architecture levels have very different features and they require different algorithmic development methodologies. For such a reason, the development of algorithms and scientific software for these system implies a suitable combination of several methodologies to deal with the different kinds of parallelism corresponding to each architectural level. The general aim is then the development of hybrid and hierarchical algorithms, able to be aware of the underlying platform. Main problems in this field are the management of large parallelism degree due to several computing units, the heterogeneity of these devices and the combination of the several kinds of parallelism in a single algorithm. These topics are mainly investigated also to gain the so called exascale performance, and, from another side, the high performance cloud computing.

This workshop focuses specifically on Models, Methodologies, Algorithms and Environments to exploit all forms of parallelism and their combination at the all levels in the emerging HPC multicomputers, with the goal of gathering the current state of knowledge in the field.

The topics include, but are not limited, to:



new (Aug 13): The workshop will be held monday, september 12,  at  3.50 pm



accepted papers


Maciej Cytowski and Marek Niezgódka. (paper 30)

Univ. of Warsaw (Poland)

Increasing efficiency of DaCS programming model for heterogeneous systems



Maciej Zbierski. (paper 72)

Warsaw Univ. of Technology (Poland)

A Simulated Annealing algorithm for GPU clusters



Luisa D'Amore, Livia Marcellino, Valeria Mele and Diego Romano. (paper 76)

Univ.  of Naples Federico II (Italy) and Univ. of Naples Parthenope (Italy)

Deconvolution of 3D Fluorescence Microscopy Images using Graphics Processing Units



Vania Boccia, Luisa Carracciuolo, Giuliano Laccetti and Marco Lapegna. (paper 124)

Univ. of Naples Federico II ( Italy) and ICTP-CNR (Naples, Italy)

HADAB: enabling fault tolerance in parallel applications in distributed environments



Raffaele Montella, Giuseppe Coviello, Giulio Giunta, Giuliano Laccetti, Florin Isaila and Javier Garcia Blas.  (paper 141)

Univ. of Naples Parthenope (Italy) and Univ. of Madrid Carlos III (Spain)

A general-purpose virtualization service for HPC on cloud computing: an application to GPUs



Apolo H. Hernández, Graciela Román-Alonso, Miguel A. Castro-García, Manuel Aguilar Cornejo, Santiago Domínguez-Domínguez and Jorge Buenabad-Chávez. (paper 148)

Univ. Autonoma Metropolitana of Mexico City (Mexico)

A Software Architecture for Parallel List Processing on Grids






Paper Submission and Publication

All rules of paper submission of the PPAM conference apply. In particular:



  • Papers will be refereed and accepted on the basis of their scientific merit and relevance to the
    Workshop topics.

  • Papers presented at the Workshop will be included into the conference proceedings and
    published after the conference by Springer in the LNCS series.

  • Before the Workshop, abstracts of accepted papers will be posted on this site.

  • Authors should submit papers (PDF files)  using the online submission tool:


  • Papers are not to exceed 10 pages (LNCS style)

  • Final camera-ready versions of accepted papers will be required by October 31, 2011.



Submission of Papers: May 15, 2011(extended)
Notification of Acceptance: June 15, 2011
Conference: September 11-14, 2011
Camera-Ready Papers: Oct 31, 2011

Session Organizers

Giuliano Laccetti, University of Naples Federico II, Naples, Italy            Email:
Marco Lapegna, University of Naples Federico II, Naples, Italy              Email:

Raffaele Montella, University of Naples "Parthenope", Naples, Italy      Email:

Scientific Program Committee

Giovanni Aloisio, University of Salento,  Italy, and CMCC, Italy

Alfredo Buttari, CNRS, France
Ian Foster, Argonne National Lab USA and University of Chicago  USA
Florin Isaila, University Carlos III,  Spain

Giuliano Laccetti, University of Naples Federico II, , Italy
Marco Lapegna, University of Naples Federico II, , Italy

Raffaele Montella, University of Naples "Parthenope", , Italy
Almerico Murli, University of Naples Federico II, and SPACI, Italy

Guido Russo, University of Naples Federico II