Chair News

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We congratulate Sebastian Ertel for having successfully defended his PhD on September 4th, 2019.  Sebastian worked with us from May 2015 (check out the announcement from back then) and, while we are sad to see him leave, we wish him all the best for the future. Sebastian presented his work on “Towards Implicit Parallel Programming for Systems” in front of family, friends, colleagues and a jury composed of five university professors. Michel Steuwer, a professor at the School of Computing Science at the University of Glasgow, acted as second reviewer and spent two days visiting the CC Chair. 

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Joonas Multanen, a graduate student at the Laboratory of Pervasive Computing in Tampere University of Technology, presented joint work with the CC Chair on Efficient Instruction Delivery with Domain Wall Memory (SHRIMP). Joonas worked at the CC Chair in the second semester of 2018 in the context of a collaboration between our group and the group of Pekka Jääskeläinen from the Customized Parallel Computing research group.

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Robert Khasanov and Asif Ali Khan from the CC Chair attended the 15th International Summer School on Advanced Computer Architecture and Compilation for High-Performance and Embedded Systems (ACACES) in Fiuggi, Italy. ACACES connects computer architects and tool builders from both academia and industry working on high performance computer architectures and compilation for computing systems. This year's ACACES week included lectures by renowned experts in field, including speakers from AMD, NVIDIA and Micron. Asif and Robert had the opportunity to present their work at the poster session and visit posters from other researchers working in similar domains.

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The Chair for Compiler Construction was represented at this year's International Conference on Embedded Computer Systems: Architectures, Modeling, and Simulation (SAMOS XIX). Andres Goens presented our work on compact mappings to multicore systems.

In a conference which is well-known for its flexible program, allowing plenty of discussions and networking, the paper spawned various discussions after being presented. This fit well into the friendly atmosphere of the SAMOS conference, where our researchers could meet and discuss with top researchers from around the globe; this is depicted well by the Picture of Prof. Yale Patt's beachnote, in the gallery below.

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The CC chair had a strong participation with three papers in this year’s ACM Federated Computing Research Conference (FCRC), a premier international event with 13 conferences and workshops (including PLDI and ISCA). The FCRC had around 2700 attendees over the course of the entire week and featured keynotes by Geoffrey Hinton and Yann LeCun, prominent machine learning researchers.  Asif Khan presented our work on “Optimizing Tensor Contractions for Embedded Devices with Racetrack Memory Scratch-Pads” at the 20th ACM SIGPLAN/SIGBED International Conference on Languages, Compilers, Tools and Theory of Embedded Systems (LCTES) to about 40 attendees. Dr. Norman Rink presented our work on "TeIL: a type-safe imperative Tensor Intermediate Language" at the 6th ACM SIGPLAN International Workshop on Libraries, Languages, and Compilers for Array Programming (ARRAY) to around 30 attendees. Alexander Brauckmann, a student currently working with Sebastian Ertel and Andres Goens, presented our work on  "A case study on machine learning for synthesizing benchmarks" at the 3rd ACM SIGPLAN International Workshop on Machine Learning and Programming Languages (MAPL) also to around 30 attendees. We are very excited with the exchanges that took place during the different events and with the possibilities for future work and collaboration that this publications opened. 

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The Groupement De Recherche System On Chip, Systèmes embarqués et Objets Connectés (GdR-SOC2) in France connects hundred of researchers working at different levels, from devices to systems, for future SOCs. In 2019, the yearly meeting of the GdR-SOC2 took place in Montpellier, hosted by the Polytech Montpellier – Université de Montpellier, from June 19 to June 21. Prof. Castrillon was invited to give a keynote in the design and methods topical area organized by Maxime Pelcat. His talk, entitled “SoC programming in the era of the Internet of Things, machine learning and emerging technologies”, touched upon current research activities in the CC Chair including (i) adaptive execution of embedded dataflow applications (Tetris), (ii) tensor expression languages and their important role for analyzing and optimizing kernels in machine learning (TeIL, TeML), and (iii) how these high level abstractions can be leveraged to optimize for emerging systems with, e.g., racetrack memories. The talk was attended by 170 researchers spawning interesting discussions.

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This year, the chair for Compiler Construction participated at the long night of sciences, 'Lange Nacht der Wissenschaften'. Two of our members, Hasna Bouraoui and Andres Goens presented collaborative efforts from our Transitive Efficient Template Runtime System (TETRiS) project.

With a demo game inspired by the computer game, Tetris (not to be confused with TETRiS), we could explain concepts of mapping multiple applications dynamically to a system-on-chip platform. We had several visits, mostly kids, who wanted to discover how a compiler can play the Tetris game, "Auch ein compiler spielt Tetris". This offered the kids the opportunity  to get to know in a simple way  parts of the world behind multicore compilers, in a funny and short Tetris game.

Our members also presented a demo of energy consumption on an Odroid board, showing how we can save energy while using the TETRiS system on a hetergenous platform.

 

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Five members of the CC Chair participated in the 2019 Rewe Team Challenge Dresden (4x5km). Conny Okuma, Andres Goens, Christian Menard and Jeronimo Castrillon made a mixed team that got place 690 with a total time of 1:45:44. Gerald Hempel joined other cfaed and DCN colleagues in a mixed team that made place 1169 with a total time of 1:51:24. There’s room for improvement for next year!!

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The chair for compiler construction is hosting Amani Younsi and Taher Aouayeb for a short term project with the support of the  German Academic Exchange Service (DAAD). Amani and Taher, are working towards their final graduation project at National School of Computer Science (ENSI) in Tunisia. The internship is planned for 5 months in the context of a collaboration between ENSI with Prof. Chadlia Jerad from the University of Manouba, and the CC chair. Hasna Bouraoui, a Phd Student in CCC, will be helping as an advisor of the students. Amani will be working on performance analysis of a deep learning based speaker/speech recognition algorithm on heterogeneous platform. Taher will be working on the design and development of a compiler for a multi-core platform of FlexPRET machines.  

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On the 21st of January, Prof. Castrillon co-organized and act as program chair for the 10th workshop on Parallel Programming and Run-Time Management Techniques for Many-core Architectures 8th Workshop on Design Tools and Architectures for Multicore Embedded Computing Platforms (PARMA-DITAM’19). The workshop had around 30 attendees and discussed interesting topics from many-core architectures, support for approximate machine learning, and programming models and compilers. Hasna Bouraoui gave the seventh talk at the workshop, on “Comparing Dataflow and OpenMP Programming for Speaker Recognition Applications”, a collaborative work with Prof. Chadlia Jerad from University of Manouba and University of Carthage.