Institute of Theoretical Informatics, Algorithmics II
Picture of Michael Axtmann

M.Sc. Michael Axtmann

Research Interests

  • Parallel and Distributed Algorithms
  • Sorting
  • Fault Tolerance
  • Big Data
  • Message Passing Interface (MPI)


IPS⁴o - In-place Parallel Super Scalar Samplesort

Range Based MPI Communicators (RBC) and Janus Sort - MPI communicators which support split operations in constant time on continues process ranges.


Lightweight MPI communicators with applications to perfectly balanced quicksort.
Axtmann, M.; Wiebigke, A.; Sanders, P.
2018. 32nd IEEE International Parallel and Distributed Processing Symposium, IPDPS 2018; Vancouver; Canada; 21 May 2018 through 25 May 2018, 254–265, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/IPDPS.2018.00035Full textFull text of the publication as PDF document
In-Place Parallel Super Scalar Samplesort (IPSSSSo).
Axtmann, M.; Witt, S.; Ferizovic, D.; Sanders, P.
2017. 25th European Symposium on Algorithms : (ESA 2017) Vienna, Austria, September 4-6, 2017. Ed.: K. Pruhs, C. Sohler, Art.Nr. 9, Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH (LZI). doi:10.4230/LIPIcs.ESA.2017.9Full textFull text of the publication as PDF document
Robust massively parallel sorting.
Axtmann, M.; Sanders, P.
2017. Proceedings of the Ninteenth Workshop on Algorithm Engineering and Experiments (ALENEX), Barcelona, E, January 17-18, 2017. Ed.: S. Fekete, 83–97, SIAM Publ. doi:10.1137/1.9781611974768.7Full textFull text of the publication as PDF document
Thrill: High-performance algorithmic distributed batch data processing with C++.
Bingmann, T.; Axtmann, M.; Jobstl, E.; Lamm, S.; Nguyen, H. C.; Noe, A.; Schlag, S.; Stumpp, M.; Sturm, T.; Sanders, P.
2016. IEEE International Conference on Big Data (Big Data), Washington DC, USA, 5–8 December 2016, 172–183, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/BigData.2016.7840603Full textFull text of the publication as PDF document
Practical Massively Parallel Sorting.
Axtmann, M.; Bingmann, T.; Sanders, P.; Schulz, C.
2015. Proceedings of the 27th ACM Symposium on Parallelism in Algorithms and Architectures, SPAA 2015, Portland, OR, USA, June 13-15, 2015, 13–23, Association for Computing Machinery (ACM). doi:10.1145/2755573.2755595Full textFull text of the publication as PDF document


Supervised Theses
Title Subject Supervisor Student
MPI Communicator and Distributed Sorting

Michael Axtmann, Peter Sanders

Armin Wiebigke