Vacancies
Student Assistant (Studentische Hilfskraft, SHK)
The Linux kernel contains the SCHED_DEADLINE CPU scheduler which is based on the Earliest Deadline First (EDF) and Constant Bandwidth Server (CBS) algorithms. SCHED_DEADLINE allows applications to reserve a budget Q every period P for computation, making this CPU-scheduler ideal for mixed real-time work.
The goal of this task is to port a selection of benchmarks from the PARSEC benchmark suite to take advantage of SCHED_DEADLINE, so that the efficacy of SCHED_DEADLINE can be evaluated and compared against the ATLAS [1] scheduler developed at the operating systems group. The comparison is strictly an optional part of this task.
Contact: Michael Roitzsch
"App-Store": Web-Based Front End for JUPITER (Student Assistant/Studentische Hilfskraft/SHK)
JUPITER is the name of one of our current research projects. The goal of JUPITER is the safe and isolated execution of value-added services. We're looking for an SHK to implement the web-based front end where users can install/uninstall, check, start, and stop services.
We're also looking for an SHK to integrate the web-based front end with the back end. This can be done by the same SHK that develops the front end, but this task is slightly more involved than simply developing a front end. We're using virtualisation to isolate services in the back end. The back end is supposed to rely on libvirt to start and stop virtual machine and hence services.
Contact: Jan Bierbaum, Adam Lackorzynski
Linux Network Device Driver Optimization (Student Assistant/SHK)
RoCEv2 is a Remote Direct Memory Access (RDMA) protocol, widely used in high-performance and cloud setting. Typically, RoCEv2 is implemented as part of specialised circuitry of RDMA network adapters. In contrast, SoftRoCE, the software-based RoCEv2 implementation, requires no specialised hardware. SoftRoCE simplifies development and testing of RDMA-applications in exchange for significantly lower performance. The goal of this project is to restructure the SoftRoCE driver to improve overall communication performance of the network driver.
We are looking for a student to utilise various opportunities for performance improvement. The student is expected to have general understanding of Linux-based OSs, good command in C and bash, successfully complete the Operating Systems (Betriebssysteme or Sicherheit) course (or similar). Prior experience with kernel programming is preferable, but not necessary. The student must be motivated to learn principles of kernel programming.
We offer guidance and teaching in kernel programming and specific advice in optimisation approaches, including performance analysis. The student will gain general experience in low-level programming and learn multiple subsystems of the Linux kernel, including RDMA network infrastructure, concurrency paradigms, memory management.
Contact: Maksym Planeta