Simultaneous multithreading: maximizing on-chip parallelism
ISCA '95 Proceedings of the 22nd annual international symposium on Computer architecture
ISCA '96 Proceedings of the 23rd annual international symposium on Computer architecture
Symbiotic jobscheduling for a simultaneous multithreaded processor
ASPLOS IX Proceedings of the ninth international conference on Architectural support for programming languages and operating systems
An analysis of operating system behavior on a simultaneous multithreaded architecture
ASPLOS IX Proceedings of the ninth international conference on Architectural support for programming languages and operating systems
Improving server software support for simultaneous multithreaded processors
Proceedings of the ninth ACM SIGPLAN symposium on Principles and practice of parallel programming
Initial Observations of the Simultaneous Multithreading Pentium 4 Processor
Proceedings of the 12th International Conference on Parallel Architectures and Compilation Techniques
Evaluating the impact of simultaneous multithreading on network servers using real hardware
SIGMETRICS '05 Proceedings of the 2005 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Performance of multithreaded chip multiprocessors and implications for operating system design
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
Hyper-threading aware process scheduling heuristics
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
Enhancements for hyper-threading technology in the operating system: seeking the optimal scheduling
WIESS'02 Proceedings of the 2nd conference on Industrial Experiences with Systems Software - Volume 2
| Hi-index | 0.00 |
The availability of Simultaneous Multithreading (SMT) in commodity processors such as the Pentium 4 (P4) has raised interest among OS researchers. While earlier simulation studies of SMT suggested exciting performance potential, observed improvement on the P4 has been much more restrained, raising the hope that OS research can help bridge the gap. We argue that OS research for current commodity Simultaneous Multithreading (SMT) processors is unlikely to yield significant benefits. In general, we find that SMT processor simulations were optimistic about cache and memory performance characteristics, while overlooking the OS overheads of SMT kernels versus uniprocessor kernels. Using measurement and analysis on actual hardware, we find that little opportunity exists for realistic performance gains on commodity SMT beyond what is currently achieved.