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When timing matters: enabling time accurate & scalable simulation of sensor network applications.
| Content Provider | CiteSeerX |
|---|---|
| Author | Landsiedel, Olaf Alizai, Hamad Wehrle, Klaus |
| Abstract | The raising complexity of data processing algorithms in sensor networks combined with the severely limited computing power of sensor nodes make a deep understanding of the timely behavior of implementations a necessity. However, only cycle accurate emulation and test-beds provide a detailed and accurate insight into the timely behavior of sensor networks. In this paper we introduce automated instrumentation of simulation models with detailed timing information derived from the sensor node and application binary to provide detailed timing information. The presented approach bridges the gap between scalable but abstracting simulation and cycle accurate emulation for sensor network evaluation. By mapping device specific code with simulation models, we can derive the timing of each source code line on a sensor node. As a result of such a mapping it is possible to determine the time and duration a certain code line gets executed. Hence, eliminating the need to use expensive instruction level emulators with limited speed, restricted scalability and portability. Furthermore, the proposed design is not bound to a specific hardware platform, a major advantage compared to existing emulators. Our evaluation shows, that the proposed technique achieves a timing accuracy of 99 % compared to emulation while adding only a limited overhead. Concluding, it combines essential properties like accuracy, speed and scalability on a single simulation platform. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Enabling Time Accurate Scalable Simulation Device Specific Code Evaluation Show Timing Accuracy Sensor Network Evaluation Certain Code Line Major Advantage Application Binary Deep Understanding Source Code Line Expensive Instruction Level Emulator Sensor Node Cycle Accurate Emulation Detailed Timing Information Specific Hardware Platform Single Simulation Platform Timely Behavior Limited Overhead Limited Speed Sensor Network Application Accurate Insight Presented Approach Sensor Network Simulation Model Automated Instrumentation Essential Property |
| Content Type | Text |
| Resource Type | Article |
