august.ernstsson.se

My research interests are centered around high-level parallel programming of heterogeneous architectures. I have a particular emphasis on programmability and expressiveness aspects and also work on topics such as optimization.

I am the lead developer on the open-source SkePU high-level parallel programming research framework.

In my spare time I like to spend time outdoors with my trusty bike and camera for nature photography, or with my family.

I am a postdoc at the Programming Environments Laboratory (PELAB) at the Department of Computer and Information Science (IDA), Linköping University.

During 2023, I am a visting researcher at the Practical Computer Science Group, Department of Information Systems at University of Münster in Germany.

I am an associate member of research projects GPAI and ASTECC.

• August Ernstsson. SkePU 2: Language Embedding and Compiler Support for Flexible and Type-Safe Skeleton Programming, Linköping University, June 2016. (LiU-EP)

• August Ernstsson, Lu Li, Christoph Kessler. SkePU 2: Flexible and type-safe skeleton programming for heterogeneous parallel systems. Int. Journal of Parallel Programming 46(1):62-80, Feb. 2018 (online: Jan. 2017). doi: 10.1007/s10766-017-0490-5

• August Ernstsson, Christoph Kessler. Extending smart containers for data locality-aware skeleton programming. Concurrency and Computation: Practice and Experience 31(5), March 2019, Wiley. (Online: Oct. 2018) DOI: 10.1002/cpe.5003
• Tomas Öhberg, August Ernstsson, Christoph Kessler. Hybrid CPU-GPU execution support in the skeleton programming framework SkePU. The Journal of Supercomputing, Springer. March 2019 (online). DOI: 10.1007/s11227-019-02824-7 (Open Access)

• August Ernstsson, Christoph Kessler. Multi-variant User Functions for Platform-aware Skeleton Programming. Proc. of ParCo-2019 conference, Prague, Sep. 2019, in: I. Foster et al. (Eds.), Parallel Computing: Technology Trends, series: Advances in Parallel Computing, vol. 36, IOS press, March 2020, pages 475-484. DOI: 10.3233/APC200074.
  PDF (open access)
• Sotirios Panagiotou, August Ernstsson, Johan Ahlqvist, Lazaros Papadopoulos, Christoph Kessler, Dimitrios Soudris. Portable exploitation of parallel and heterogeneous HPC architectures in neural simulation using SkePU. SCOPES '20: Proceedings of the 23th International Workshop on Software and Compilers for Embedded Systems, New York, NY, USA. ACM, May 2020, pages 74-77. DOI: 10.1145/3378678.3391889
• August Ernstsson. Designing a Modern Skeleton Programming Framework for Parallel and Heterogeneous Systems. Linköping Studies in Science and Technology, Licentiate Thesis No. 1886, Linköping University, October 2020. DOI: 10.3384/lic.diva-170194

• August Ernstsson, Johan Ahlqvist, Stavroula Zouzoula, Christoph Kessler. SkePU 3: Portable High-Level Programming of Heterogeneous Systems and HPC Clusters. Int J Parallel Prog 49, 846–866 (2021). DOI: 10.1007/s10766-021-00704-3

• August Ernstsson. Pattern-based Programming Abstractions for Heterogeneous Parallel Computing. Linköping Studies in Science and Technology, Dissertation No. 2205, Linköping University, March 2022. DOI: 10.3384/9789179291969
• Lazaros Papadopoulos, Dimitrios Soudris, Christoph Kessler, August Ernstsson, Johan Ahlqvist, Nikos Vasilas, Athanasios I. Papadopoulos, Panos Seferlis, Charles Prouveur, Matthieu Haefele, Samuel Thibault, Athanasios Salamanis, Theodoros Ioakimidis, Dionysios Kehagias. EXA2PRO: A Framework for High Development Productivity on Heterogeneous Computing Systems. IEEE Transactions on Parallel and Distributed Systems vol. 33, no. 4, pp. 792-804, 1 April 2022. DOI: 10.1109/TPDS.2021.3104257
• August Ernstsson, Nicolas Vandenbergen, Jörg Keller, Christoph Kessler. A Deterministic Portable Parallel Pseudo-Random Number Generator for Pattern-Based Programming of Heterogeneous Parallel Systems. Int J Parallel Prog 50, 319–340 (2022). DOI: 10.1007/s10766-022-00726-5
• Gabriella Andrade, Dalvan Griebler, Rodrigo Santos, Christoph Kessler, August Ernstsson, Luis G. Fernandes Analyzing programming effort model accuracy of high-level parallel programs for stream processing. 2022 48th Euromicro Conference on Software Engineering and Advanced Applications (SEAA), pp. 1–4, 2022. DOI: 10.1109/SEAA56994.2022.00043
• August Ernstsson, Dalvan Griebler, Christoph Kessler. Assessing Application Efficiency and Performance Portability in Single‐Source Programming for Heterogeneous Parallel Systems. Int. Journal of Parallel Programming (2022). DOI: 10.1007/s10766-022-00746-1

• HLPP 2016, Münster, Germany. SkePU 2: Flexible and type-safe skeleton programming for heterogeneous parallel systems
• Excess workshop 2016, Gothenburg, Sweden. SkePU 2: Flexible and type-safe skeleton programming for heterogeneous parallel systems
• MCC 2016, Trondheim, Norway. SkePU 2: Flexible and type-safe skeleton programming for heterogeneous parallel systems
• HiPEAC 2017, Stockholm, Sweden. SkePU 2: Flexible and type-safe skeleton programming for heterogeneous parallel systems
• HLPP 2017, Valladolid, Spain. Extending smart containers for data locality-aware skeleton programming
• MCC 2017, Uppsala, Sweden. Extending smart containers for data locality-aware skeleton programming
• HLPP 2019, Linköping, Sweden. Multi-variant User Functions for Platform-aware Skeleton Programming
• ParCo 2019, Prague, Czech Republic. Multi-variant User Functions for Platform-aware Skeleton Programming
• MCC 2019, Karlskrona, Sweden. Multi-variant User Functions for Platform-aware Skeleton Programming
• HLPP 2020, distance mode. SkePU 3: Portable High-Level Programming of Heterogeneous Systems and HPC Clusters
• Licentiate seminar, distance mode. Designing a Modern Skeleton Programming Framework for Parallel and Heterogeneous Systems
• HLPP 2021, distance mode. A Deterministic Portable Parallel Pseudo-Random Number Generator for Pattern-Based Programming of Heterogeneous Parallel Systems
• Doctoral defense, Linköping, Sweden. Pattern-based Programming Abstractions for Heterogeneous Parallel Computing
• HLPP 2022, Porto, Portugal. Assessing Application Efficiency and Performance Portability in Single‐Source Programming for Heterogeneous Parallel Systems

• Exa2Pro Technical Meeting 2019, Linköping, Sweden (SkePU 2)
• HLPP 2019, Linköping, Sweden (SkePU 2)
• MCC 2019, Karlskrona, Sweden (SkePU 2)
• PPoPP 21, distance mode (SkePU 3)
• EXA2PRO-EoCoE Joint Workshop 2021, distance mode (SkePU 3)
• eScience 21, distance mode (SkePU 3)

• TDDC78 Programming of Parallel Computers: Methods and Tools
  Lab/course assistant 2016,2017,2018,2019,2020,2021,2022 (master's level)
• TDDD56 Multicore and GPU Programming
  Lab/course assistant 2016,2017,2018,2019,2020,2021,2022 (master's level)
• DF00100 Advanced Compiler Construction
  Lab assistant 2021 (PhD level)
• TDDD89 Scientific Method
  Teaching assistant 2021,2022 (master's level)
• TDDC88/TDDC93/725G64 Software Engineering
  Exam construction/correction assistant 2022 (undergraduate)
• Master's thesis project (co)supervision