The European FP7 project PEPPHER is addressing programmability and performance portability for cu... more The European FP7 project PEPPHER is addressing programmability and performance portability for current and emerging heterogeneous many-core archi-tectures. As its main idea, the project proposes a multi-level parallel execution model comprised of potentially ...
Workows are considered to be one of the most relevant programming models for the Grid. In the pas... more Workows are considered to be one of the most relevant programming models for the Grid. In the past many workow languages have been developed. However, most of them are textual- oriented, are based on a self-dened notation, or lack an adequate tool-support. Therefore, there is a need for streamlining the task of Grid worklow specication. In this paper we present
International Journal of Grid and Utility Computing, 2009
... Biographical notes: Sabri Pllana is a Senior Research Scientist at the Department of Scientif... more ... Biographical notes: Sabri Pllana is a Senior Research Scientist at the Department of Scientific Computing, University of Vienna. ... For instance, if the execution of program under study takes several weeks, we do not want to spend for evaluation of the corresponding performance ...
Proceedings of the Fifth International Conference on Grid and Cooperative Computing Workshops, 2006
Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for... more Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for QoS-aware Grid work- flows. Amadeus considers user’s requirements, in terms of QoS constraints, during workflow specification, planning, and execution. Within the Amadeus environment, workflows and the associated QoS constraints are specified at a high- level using an intuitive graphical notation. A set of QoS- aware
We address the issue of the development of performance models for programs that may be executed o... more We address the issue of the development of performance models for programs that may be executed on large-scale computing systems. The commonly used approaches apply non-standard notations for model specification and often require that the software engineer has a thorough understanding of the underlying performance modeling technique. We propose to bridge the gap between the performance modeling and software engineering
The improvement of single-processor performance by increasing clock rate and instructions-per-clo... more The improvement of single-processor performance by increasing clock rate and instructions-per-clock number has reached its technological limits. Increasing instead the number of processing cores per chip is an alternative that can yield better overall system ...
2012 SC Companion: High Performance Computing, Networking Storage and Analysis, 2012
ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhan... more ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhance performance portability and programmability of heterogeneous multi-core systems. Its primary target is single-node heterogeneous systems, where several CPU cores are supported by accelerators such as GPUs. This poster briefly surveys the PEPPHER framework for singlenode systems, and elaborates on the prospectives for leveraging the PEPPHER approach to generate performance-portable code for heterogeneous multi-node systems.
2012 SC Companion: High Performance Computing, Networking Storage and Analysis, 2012
ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhan... more ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhance performance portability and programmability of heterogeneous multi-core systems. Its primary target is single-node heterogeneous systems, where several CPU cores are supported by accelerators such as GPUs. This poster briefly surveys the PEPPHER framework for single-node systems, and elaborates on the prospectives for leveraging the PEPPHER approach to generate performance-portable code for heterogeneous multi-node systems.
First International Conference on Complex, Intelligent and Software Intensive Systems (CISIS'07), 2007
Performance is one of the key features of parallel and distributed computing systems. Therefore, ... more Performance is one of the key features of parallel and distributed computing systems. Therefore, in the past a significant research effort was invested in the development of approaches for performance modeling and prediction of parallel and distributed computing systems. In this paper we identify the trends, contributions, and drawbacks of the state of the art approaches. We describe a wide
2006 Fifth International Conference on Grid and Cooperative Computing Workshops, 2006
Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for... more Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for QoS-aware Grid work- flows. Amadeus considers user’s requirements, in terms of QoS constraints, during workflow specification, planning, and execution. Within the Amadeus environment, workflows and the associated QoS constraints are specified at a high- level using an intuitive graphical notation. A set of QoS- aware
The European FP7 project PEPPHER is addressing programmability and performance portability for cu... more The European FP7 project PEPPHER is addressing programmability and performance portability for current and emerging heterogeneous many-core archi-tectures. As its main idea, the project proposes a multi-level parallel execution model comprised of potentially ...
Workows are considered to be one of the most relevant programming models for the Grid. In the pas... more Workows are considered to be one of the most relevant programming models for the Grid. In the past many workow languages have been developed. However, most of them are textual- oriented, are based on a self-dened notation, or lack an adequate tool-support. Therefore, there is a need for streamlining the task of Grid worklow specication. In this paper we present
International Journal of Grid and Utility Computing, 2009
... Biographical notes: Sabri Pllana is a Senior Research Scientist at the Department of Scientif... more ... Biographical notes: Sabri Pllana is a Senior Research Scientist at the Department of Scientific Computing, University of Vienna. ... For instance, if the execution of program under study takes several weeks, we do not want to spend for evaluation of the corresponding performance ...
Proceedings of the Fifth International Conference on Grid and Cooperative Computing Workshops, 2006
Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for... more Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for QoS-aware Grid work- flows. Amadeus considers user’s requirements, in terms of QoS constraints, during workflow specification, planning, and execution. Within the Amadeus environment, workflows and the associated QoS constraints are specified at a high- level using an intuitive graphical notation. A set of QoS- aware
We address the issue of the development of performance models for programs that may be executed o... more We address the issue of the development of performance models for programs that may be executed on large-scale computing systems. The commonly used approaches apply non-standard notations for model specification and often require that the software engineer has a thorough understanding of the underlying performance modeling technique. We propose to bridge the gap between the performance modeling and software engineering
The improvement of single-processor performance by increasing clock rate and instructions-per-clo... more The improvement of single-processor performance by increasing clock rate and instructions-per-clock number has reached its technological limits. Increasing instead the number of processing cores per chip is an alternative that can yield better overall system ...
2012 SC Companion: High Performance Computing, Networking Storage and Analysis, 2012
ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhan... more ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhance performance portability and programmability of heterogeneous multi-core systems. Its primary target is single-node heterogeneous systems, where several CPU cores are supported by accelerators such as GPUs. This poster briefly surveys the PEPPHER framework for singlenode systems, and elaborates on the prospectives for leveraging the PEPPHER approach to generate performance-portable code for heterogeneous multi-node systems.
2012 SC Companion: High Performance Computing, Networking Storage and Analysis, 2012
ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhan... more ABSTRACT PEPPHER is a 3-year EU FP7 project that develops a novel approach and framework to enhance performance portability and programmability of heterogeneous multi-core systems. Its primary target is single-node heterogeneous systems, where several CPU cores are supported by accelerators such as GPUs. This poster briefly surveys the PEPPHER framework for single-node systems, and elaborates on the prospectives for leveraging the PEPPHER approach to generate performance-portable code for heterogeneous multi-node systems.
First International Conference on Complex, Intelligent and Software Intensive Systems (CISIS'07), 2007
Performance is one of the key features of parallel and distributed computing systems. Therefore, ... more Performance is one of the key features of parallel and distributed computing systems. Therefore, in the past a significant research effort was invested in the development of approaches for performance modeling and prediction of parallel and distributed computing systems. In this paper we identify the trends, contributions, and drawbacks of the state of the art approaches. We describe a wide
2006 Fifth International Conference on Grid and Cooperative Computing Workshops, 2006
Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for... more Abstract In this paper we present Amadeus, which is a holis- tic service-oriented environment for QoS-aware Grid work- flows. Amadeus considers user’s requirements, in terms of QoS constraints, during workflow specification, planning, and execution. Within the Amadeus environment, workflows and the associated QoS constraints are specified at a high- level using an intuitive graphical notation. A set of QoS- aware
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