This paper describes an approach for adaptive dynamic instruction set extension, tuning embedded processors to specific applications which are going to be executed in their life-time. These new instructions are generated after production. The processor has two modes: training mode and normal mode. Training mode can be done offline or online. The applicationspecific instructions are extracted fr...

This paper describes a non-blocking checkpointing mode in support of optimistic parallel discrete event simulation. This mode allows real concurrency in the execution of state saving and other simulation specific operations (e.g. event list update, event execution), with the aim at removing the cost of recording state information from the completion time of the parallel simulation application. ...

Sensor nodes usually work under dynamic changing, hard-to-predict environments and have limited lifetime. We use a novel adaptive online energy saving (AOES) algorithm to save total energy consumption for heterogeneous sensor networks. Due to the uncertainties in execution time of some tasks and multiple working mode of each node, this paper models each varied execution time as a probabilistic ...

The Giotto model is a semantic model that describes the communication between periodic time triggered components. It was developed by Thomas Henzinger and his group. It was designed for deterministic and safety critical applications. The main points about the Giotto model are: 1. A Giotto model is composed of one or more modes and each mode is composed of several tasks. 2. For every task, the d...

Negative bias temperature instability (NBTI) has become a critical reliability phenomena in advanced CMOS technology. In this paper, we propose an analytical temperature-aware dynamic NBTI model, which can be used in two circuit operation cases: executing tasks with different temperatures, and switching between active and standby mode. A PMOS Vth degradation model and a digital circuits’ tempor...

The Integration Rules (IRules) project is investigating the use of active rules for supporting event-driven activity in applications involving distributed component integration. Integration rules respond to events that are raised during the execution of distributed transactions to evaluate conditions and trigger actions over distributed components that are implemented using the Enterprise Java ...

In this thesis we describe techniques for code generation and global optimization for a PRAM-NUMA multicore architecture. We specifically focus on the REPLICA architecture which is a family massively multithreaded very long instruction word (VLIW) chip multiprocessors with chained functional units that has a reconfigurable emulated shared on-chip memory. The on-ship memory system supports two e...

This study explored the neurophysiological mechanisms underlying the planning and execution of an overt goal-related handle rotation task. More specifically, we studied the neural basis of motor actions concerning the influence of the grasp choice. The aim of the present study was to differentiate cerebral activity between grips executed in a habitual and a non-habitual mode, and between specif...