Analysis of performance bottlenecks in multithreaded multiprocessor systems
The performance of modern multiprocessor systems is often limited by the delays of interconnections or long latencies of memory subsystems. Instruction-level multithreading is a technique to tolerate such long latencies by switching from one instruction thread to another and continuing instruction execution concurrently with the long-latency operations. Using timed Petri net models, the paper analyzes performance limitations introduced by different components of distributed-memory multithreaded multiprocessor systems. Simulation results are used to compare performance improvements obtained by replicating critical components of the system to those obtained using components with better performance characteristics.
performance bottlenecks instruction-level multithreading timed petri nets distributed-memory multiprocessor systems performance analysis event-driven simulation