Dr.-Ing. Gerald Hempel |
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Phone Fax Visitor's Address |
+49 (0)351 463 42440 +49 (0)351 463 39995 Barkhausenbau, BAR III70 Helmholtzstrasse 18 |
Gerald has a background in software development for embedded systems and hardware engineering with a Diploma in Information Systems Technology from TU Dresden. In the past he worked as a research assistant at the Chair for Embedded Systems at TU Dresden. There, he mainly worked on hardware/software co-design and development-tools for FPGA-based embedded systems. In this context, he developed a GCC-based compiler plugin that automatically identifies suitable C-code and generates hardware accelerators for FPGA-SoCs. He joined the Chair for Compiler Construction in April 2016.
Gerald's current research seeks to apply bio-inspired algorithms for problems of software synthesis for heterogeneous multi-core architectures. His work is part of a collaborative project between the Orchestration and the Biological Systems Paths in cfaed.
His current scientific interests include:
- Automatic extraction and integration of hardware accelerators from high-level programming languages
- Polyhedral program analysis for high-level-synthesis
- Alternative embedded programming concepts
- Bio-inspired algorithms and optimizations
2021
- Christian Menard, Andrés Goens, Gerald Hempel, Robert Khasanov, Julian Robledo, Felix Teweleitt, Jeronimo Castrillon, "Mocasin—Rapid Prototyping of Rapid Prototyping Tools: A Framework for Exploring New Approaches in Mapping Software to Heterogeneous Multi-cores", Proceedings of the 2021 Drone Systems Engineering and Rapid Simulation and Performance Evaluation: Methods and Tools, co-located with 16th International Conference on High-Performance and Embedded Architectures and Compilers (HiPEAC), Association for Computing Machinery, pp. 66–73, New York, NY, USA, Jan 2021. (Video Presentation) [doi] [Bibtex & Downloads]
Mocasin—Rapid Prototyping of Rapid Prototyping Tools: A Framework for Exploring New Approaches in Mapping Software to Heterogeneous Multi-cores
×Reference
Christian Menard, Andrés Goens, Gerald Hempel, Robert Khasanov, Julian Robledo, Felix Teweleitt, Jeronimo Castrillon, "Mocasin—Rapid Prototyping of Rapid Prototyping Tools: A Framework for Exploring New Approaches in Mapping Software to Heterogeneous Multi-cores", Proceedings of the 2021 Drone Systems Engineering and Rapid Simulation and Performance Evaluation: Methods and Tools, co-located with 16th International Conference on High-Performance and Embedded Architectures and Compilers (HiPEAC), Association for Computing Machinery, pp. 66–73, New York, NY, USA, Jan 2021. (Video Presentation) [doi]
Abstract
We present Mocasin, an open-source rapid prototyping framework for researching, implementing and validating new algorithms and solutions in the field of mapping software to heterogeneous multi-cores. In contrast to the many existing tools that often specialize for a particular use-case, Mocasin is an open, flexible and generic research environment that abstracts over the approaches taken by other tools. Mocasin is designed to support a wide range of models of computation and input formats, implements manifold mapping strategies and provides an adjustable high-level simulator for performance estimation. This infrastructure serves as a flexible vehicle for exploring new approaches and as a blueprint for building customized tools. We highlight the key design aspects of Mocasin that enable its flexibility and illustrate its capabilities in a case-study showing how Mocasin can be used for building a customized tool for researching runtime mapping strategies in an LTE uplink receiver.
Bibtex
@InProceedings{menard_rapido21,
author = {Christian Menard and Andr\'{e}s Goens and Gerald Hempel and Robert Khasanov and Julian Robledo and Felix Teweleitt and Jeronimo Castrillon},
title = {Mocasin---Rapid Prototyping of Rapid Prototyping Tools: A Framework for Exploring New Approaches in Mapping Software to Heterogeneous Multi-cores},
booktitle = {Proceedings of the 2021 Drone Systems Engineering and Rapid Simulation and Performance Evaluation: Methods and Tools, co-located with 16th International Conference on High-Performance and Embedded Architectures and Compilers (HiPEAC)},
year = {2021},
address = {New York, NY, USA},
month = jan,
publisher = {ACM},
doi = {10.1145/3444950.3447285},
isbn = {9781450389525},
location = {Budapest, Hungary},
pages = {66–73},
publisher = {Association for Computing Machinery},
series = {DroneSE and RAPIDO '21},
url = {https://doi.org/10.1145/3444950.3447285},
abstract = {We present Mocasin, an open-source rapid prototyping framework for researching, implementing and validating new algorithms and solutions in the field of mapping software to heterogeneous multi-cores. In contrast to the many existing tools that often specialize for a particular use-case, Mocasin is an open, flexible and generic research environment that abstracts over the approaches taken by other tools. Mocasin is designed to support a wide range of models of computation and input formats, implements manifold mapping strategies and provides an adjustable high-level simulator for performance estimation. This infrastructure serves as a flexible vehicle for exploring new approaches and as a blueprint for building customized tools. We highlight the key design aspects of Mocasin that enable its flexibility and illustrate its capabilities in a case-study showing how Mocasin can be used for building a customized tool for researching runtime mapping strategies in an LTE uplink receiver.},
numpages = {8},
}Downloads
2101_Menard_RAPIDO [PDF]
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2017
- Gerald Hempel, Andrés Goens, Josefine Asmus, Jeronimo Castrillon, Ivo F. Sbalzarini, "Robust Mapping of Process Networks to Many-Core Systems Using Bio-Inspired Design Centering", Proceedings of the 20th International Workshop on Software and Compilers for Embedded Systems (SCOPES '17), ACM, pp. 21–30, New York, NY, USA, Jun 2017. [doi] [Bibtex & Downloads]
Robust Mapping of Process Networks to Many-Core Systems Using Bio-Inspired Design Centering
×Reference
Gerald Hempel, Andrés Goens, Josefine Asmus, Jeronimo Castrillon, Ivo F. Sbalzarini, "Robust Mapping of Process Networks to Many-Core Systems Using Bio-Inspired Design Centering", Proceedings of the 20th International Workshop on Software and Compilers for Embedded Systems (SCOPES '17), ACM, pp. 21–30, New York, NY, USA, Jun 2017. [doi]
Bibtex
@InProceedings{hempel_scopes17,
author = {Gerald Hempel and Andr\'{e}s Goens and Josefine Asmus and Jeronimo Castrillon and Ivo F. Sbalzarini},
title = {Robust Mapping of Process Networks to Many-Core Systems Using Bio-Inspired Design Centering},
booktitle = {Proceedings of the 20th International Workshop on Software and Compilers for Embedded Systems (SCOPES '17)},
year = {2017},
series = {SCOPES '17},
pages = {21--30},
address = {New York, NY, USA},
month = jun,
publisher = {ACM},
acmid = {3078667},
doi = {10.1145/3078659.3078667},
isbn = {978-1-4503-5039-6},
location = {Sankt Goar, Germany},
numpages = {10},
url = {http://doi.acm.org/10.1145/3078659.3078667}
}Downloads
1706_Hempel_SCOPES [PDF]
Related Paths
Biological Systems Path, Orchestration Path
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2015
- Markus Vogt, Gerald Hempel, Jeronimo Castrillon, Christian Hochberger, "GCC-Plugin for Automated Accelerator Generation and Integration on Hybrid FPGA-SoCs", Proceedings of the Second International Workshop on FPGAs for Software Programmers (FSP), Sep 2015. ([link]) [Bibtex & Downloads]
GCC-Plugin for Automated Accelerator Generation and Integration on Hybrid FPGA-SoCs
×Reference
Markus Vogt, Gerald Hempel, Jeronimo Castrillon, Christian Hochberger, "GCC-Plugin for Automated Accelerator Generation and Integration on Hybrid FPGA-SoCs", Proceedings of the Second International Workshop on FPGAs for Software Programmers (FSP), Sep 2015. ([link])
Abstract
In recent years, architectures combining a reconfigurable fabric and a general purpose processor on a single chip became increasingly popular. Such hybrid architectures allow extending embedded software with application specific hardware accelerators to improve performance and/or energy efficiency. Aiding system designers and programmers at handling the complexity of the required process of hardware/software (HW/SW) partitioning is an important issue. Current methods are often restricted, either to bare-metal systems, to subsets of mainstream programming languages, or require special coding guidelines, e.g., via annotations. These restrictions still represent a high entry barrier for the wider community of programmers that new hybrid architectures are intended for. In this paper we revisit HW/SW partitioning and present a seamless programming flow for unrestricted, legacy C code. It consists of a retargetable GCC plugin that automatically identifies code sections for hardware acceleration and generates code accordingly. The proposed workflow was evaluated on the Xilinx Zynq platform using unmodified code from an embedded benchmark suite.
Bibtex
@InProceedings{vogt15,
Title={GCC-Plugin for Automated Accelerator Generation and Integration on Hybrid FPGA-SoCs},
Author={Vogt , Markus and Hempel, Gerald and Castrillon, Jeronimo and Hochberger, Christian},
Booktitle={Proceedings of the Second International Workshop on FPGAs for Software Programmers (FSP)},
Year={2015},
Month=sep,
Series={FSP 2015},
archivePrefix={arXiv},
arxivId={1509.00025},
eprint={1509.00025},
abstract={In recent years, architectures combining a reconfigurable fabric and a general purpose processor on a single chip became increasingly popular. Such hybrid architectures allow extending embedded software with application specific hardware accelerators to improve performance and/or energy efficiency. Aiding system designers and programmers at handling the complexity of the required process of hardware/software (HW/SW) partitioning is an important issue. Current methods are often restricted, either to bare-metal systems, to subsets of mainstream programming languages, or require special coding guidelines, e.g., via annotations. These restrictions still represent a high entry barrier for the wider community of programmers that new hybrid architectures are intended for. In this paper we revisit HW/SW partitioning and present a seamless programming flow for unrestricted, legacy C code. It consists of a retargetable GCC plugin that automatically identifies code sections for hardware acceleration and generates code accordingly. The proposed workflow was evaluated on the Xilinx Zynq platform using unmodified code from an embedded benchmark suite.},
}Downloads
1509_Vogt_FSP [PDF]
Related Paths
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- Gerald Hempel, Markus Vogt, Jeronimo Castrillon, Christian Hochberger, "Software-Backed Caching and Virtual Addressing for Generated Accelerators in SoC FPGAs", Proceedings of 41st EUROMICRO Conference on Software Engineering and Advanced Applications - Work in Progress Session (Grosspietsch, Erwin and Klöckner, Konrad), SEA-Publications: SEA-SR-44, Funchal, Madeira (Portugal), August 2015. [Bibtex & Downloads]
Software-Backed Caching and Virtual Addressing for Generated Accelerators in SoC FPGAs
×Reference
Gerald Hempel, Markus Vogt, Jeronimo Castrillon, Christian Hochberger, "Software-Backed Caching and Virtual Addressing for Generated Accelerators in SoC FPGAs", Proceedings of 41st EUROMICRO Conference on Software Engineering and Advanced Applications - Work in Progress Session (Grosspietsch, Erwin and Klöckner, Konrad), SEA-Publications: SEA-SR-44, Funchal, Madeira (Portugal), August 2015.
Bibtex
@InProceedings{hempeldsd15,
Title={Software-Backed Caching and Virtual Addressing for Generated Accelerators in SoC FPGAs},
Author={Hempel, Gerald and Vogt, Markus and Castrillon, Jeronimo and Hochberger, Christian},
Booktitle={Proceedings of 41st EUROMICRO Conference on Software Engineering and Advanced Applications - Work in Progress Session},
Year={2015},
Address={Funchal, Madeira (Portugal)},
Editor={Grosspietsch, Erwin and Kl{\"o}ckner, Konrad},
Month={August},
Publisher={SEA-Publications: SEA-SR-44},
Series={DSD/SEAA 2015},
ISBN={978-3-902457-44-8}
}Downloads
1508_Hempel_DSD [PDF]
Related Paths
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