RTTM: real-time transactional memory

Hardware transactional memory is a promising synchronization technology for chip-multiprocessors. It simplifies programming of concurrent applications and allows for higher concurrency than lock based synchronization. Standard transactional memory is optimized for average case throughput, but for real-time systems we are interested in worst-case execution times. We propose real-time transactional memory (RTTM) as a time-predictable synchronization solution for chip-multiprocessors in real-time systems. We define the hardware for time-predictable transactions and provide a bound for the maximum transaction retries. The proposed RTTM is evaluated with a simulation of a Java chip-multiprocessor. Categories and Subject Descriptors

• Type: Conference
• Year: 2010
• Where: SAC
• Authors: Martin Schoeberl, Florian Brandner, Jan Vitek
• Keywords: Applied Computing, Hardware Transactional Memory, Real-time Systems, SAC 2010, Transactional Memory