Lars Wrenger (M.Sc.)

Wissenschaftlicher Mitarbeiter


Telefon
0511 762 19729

E-mail
wrenger@sra.uni-hannover.de

Adresse
30167 Hannover
Appelstraße 4

Raum
Raum 119

Projects

ParPerOS: Parallel Persistency OS (DFG: LO 1719/8-1 and DI 2840/2-1)
In ParPerOS, we examine new abstractions for unified but efficient and optionally crash-consistent low-level memory management for data objects in heterogeneous memory systems that consist of volatile, persistent, distributed and other types of main memory.

Publications

ARCS Conference Best Paper Award
TOSTING: Investigating Total Store Ordering on ARM
Lars Wrenger, Dominik Töllner, Daniel LohmannProceedings of the 36th GI/ITG International Conference on Architecture of Computing Systems (ARCS 23)Springer International Publishing2023Best Paper Award.
PDF Details Slides [BibTex]
USENIX Conference A Distinguished Artifact Award
LLFree: Scalable and Optionally-Persistent Page-Frame Allocation
Lars Wrenger, Florian Rommel, Alexander Halbuer, Christian Dietrich, Daniel Lohmann2023 USENIX Annual Technical Conference (USENIX '23)USENIX Association2023Distinguished Artifact Award.
PDF Details Slides [BibTex]

Teaching

Supervised Student Theses

Running Theses

Fast Memory Ballooning for Virtual Machines with LLFree

Implementing hypervisor memory overcommitment with shared LLFree allocators.

 
Typ
Masterarbeit

 
Status
reserviert

 
Supervisors
Lars Wrenger
Daniel Lohmann

 
Project
ParPerOS

Integrate LLFree-C in Operating Systems

Integrate the C-based LLFree implementation into FreeBSD, DragonflyBSD or L4

 
Typ
Bachelorarbeit

 
Status
reserviert

 
Supervisors
Lars Wrenger
Daniel Lohmann

 
Project
ParPerOS

Investigating Suspend to Disk in Linux

Researching and optionally extending the Linux Suspend to Disk Mechanism.

 
Typ
Bachelorarbeit

 
Status
laufend

 
Supervisors
Lars Wrenger
Daniel Lohmann

 
Project
ParPerOS

Investigating Total Store Ordering on the ARM M1

Analyzing the performance impact of Total Store Ordering on the M1 ARM Processor.

 
Typ
Masterarbeit

 
Status
laufend

 
Supervisors
Lars Wrenger
Dominik Töllner
Daniel Lohmann

 
Project
ParPerOS

Finished Theses

Primitives and Abstractions for Self-Contained Virtual-Memory Areas in the Linux kernel

Implement the basic abstraction for self-contained virtual-address-space areas in Linux, by which we want to ease the allocation, the sharing, and the management of huge amounts of memory. [PDF]

 
Typ
Masterarbeit

 
Status
abgeschlossen

 
Supervisors
Lars Wrenger
Florian Rommel
Christian Dietrich
Daniel Lohmann

 
Project
ParPerOS

 
Bearbeiter
Alexander Halbuer (abgegeben: 16. Nov 2022)

Fast Memory Compaction for Page Allocators

Active memory defragmentation for page allocators.

 
Typ
Bachelorarbeit

 
Status
abgeschlossen

 
Supervisors
Lars Wrenger
Daniel Lohmann

 
Project
ParPerOS

LLC: DeRUSTing the Lo(ck|g)-Free Allocator for a C-Based OS Integration

Porting the LLFree concept from Rust to C, to simplify the integration into C-based OSs.

 
Typ
Bachelorarbeit

 
Status
abgeschlossen

 
Supervisors
Lars Wrenger
Daniel Lohmann

 
Project
ParPerOS

Own Thesis

Lo(ck|g)-free Page Allocator for Non-Volatile Memory in the Linux Kernel

Designing and implementing a lock-free and log-free page allocator for morsels, a new abstraction for the management of non-volatile memory in the linux kernel [PDF]

 
Typ
Masterarbeit

 
Status
abgeschlossen

 
Supervisors
Florian Rommel
Christian Dietrich
Daniel Lohmann

 
Project
ParPerOS

 
Bearbeiter
Lars Wrenger (abgegeben: 04. Apr 2022)

How to trust the Snake: Extending the Chain of Trust to Interpreted Languages on Highly Embedded Systems

Extend Micropython so, that it can decide whether or not the code was put in place by the developer, not a hacker. Also the integrity of the code needs to be proven during execution.

 
Typ
Bachelorarbeit

 
Status
abgeschlossen

 
Supervisors
Stefan Naumann
Daniel Lohmann

 
Project
CADOS

 
Bearbeiter
Lars Wrenger