Optimization-Aware Compiler-Level Event Profiling

Compiler Optimization of Value Communication for Thread-Level Speculation

In the context of Thread-Level Speculation (TLS), inter-thread value communication is the key to efficient parallel execution. From the compiler’s perspective, TLS supports two forms of inter-thread value communication: speculation and synchronization. Speculation allows for maximum parallel overlap when it succeeds, but becomes costly when it fails. Synchronization, on the other hand, introduc...

Cost-Aware Query Optimization during Cloud-Based Complex Event Processing

Complex Event Processing describes the problem of timely and continuous processing of event streams. The load of Complex Event Processing systems can vary (e.g., event rates). Static resource provision leads to higher monetary costs because enough resources have to be provided to efficiently handle peak loads. Therefore, most of the time the resources will not be fully utilized. One way to achi...

A Retargetable Framework for Multi-objective WCET-aware High-level Compiler Optimizations

The worst-case execution time (WCET) is a key parameter in the domain of real-time systems and its automatic compiler-based minimization becomes a challenging research area. Although today’s embedded system applications are written in a high-level language, most published works consider low-level optimizations which complicate their portability to other processors. In this work, we present a fr...

Heap Profiling of a Lazy Functional Compiler

Compiler-Directed I/O Optimization

Despite continued innovations in design of I/O systems, I/O performance has not kept pace with the progress in processor and communication technology. This paper addresses this I/O problem from a compiler’s perspective, and presents an I/O optimization strategy based on access pattern and storage form (file layout) detection. The objective of our optimization strategy is to determine storage fo...