Virtual machines face significant performance challenges beyond those confronted by
traditional static optimizers. First, portable program representations and dynamic language …

Java performance is far from being trivial to benchmark because it is affected by various
factors such as the Java application, its input, the virtual machine, the garbage collector, the …

Heterogeneous multiprocessors are increasingly important in the multi-core era due to their
potential for high performance and energy efficiency. In order for software to fully realize this …

Dynamic optimization is emerging as a promising approach to overcome many of the
obstacles of traditional static compilation. But while there are a number of compiler …

This thesis addresses the challenges of building a software system for general-purpose
runtime code manipulation. Modern applications, with dynamically-loaded modules and …

Modern Java programs, such as middleware and application servers, include many complex
software components. Improving the performance of these Java applications requires a …

We introduce program shepherding, a method for monitoring control flow transfers during
program execution to enforce a security policy. Program shepherding provides three …

Most high-performance dynamic language virtual machines duplicate language semantics
in the interpreter, compiler, and runtime system. This violates the principle to not repeat …

This dissertation presents an automated system to generate highly efficient, platform-
adapted implementations of sparse matrix kernels. We show that conventional …

Version 6 of Sun Microsystems' Java HotSpot™ VM ships with a redesigned version of the
client just-in-time compiler that includes several research results of the last years. The client …