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Communications of the ACM
Symbiotic jobscheduling for a simultaneous multithreaded processor
ASPLOS IX Proceedings of the ninth international conference on Architectural support for programming languages and operating systems
Symbiotic jobscheduling with priorities for a simultaneous multithreading processor
SIGMETRICS '02 Proceedings of the 2002 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Law of Internet Security and Privacy
Law of Internet Security and Privacy
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
Soft Real- Time Scheduling on Simultaneous Multithreaded Processors
RTSS '02 Proceedings of the 23rd IEEE Real-Time Systems Symposium
A pipelined memory architecture for high throughput network processors
Proceedings of the 30th annual international symposium on Computer architecture
A case for run-time adaptation in packet processing systems
ACM SIGCOMM Computer Communication Review
Single-ISA Heterogeneous Multi-Core Architectures for Multithreaded Workload Performance
Proceedings of the 31st annual international symposium on Computer architecture
Architectural Support for Enhanced SMT Job Scheduling
Proceedings of the 13th International Conference on Parallel Architectures and Compilation Techniques
Predicting Inter-Thread Cache Contention on a Chip Multi-Processor Architecture
HPCA '05 Proceedings of the 11th International Symposium on High-Performance Computer Architecture
Proceedings of the 2003 ACM/IEEE conference on Supercomputing
Scheduling Algorithms for Effective Thread Pairing on Hybrid Multiprocessors
IPDPS '05 Proceedings of the 19th IEEE International Parallel and Distributed Processing Symposium (IPDPS'05) - Papers - Volume 01
Design considerations for network processor operating systems
Proceedings of the 2005 ACM symposium on Architecture for networking and communications systems
An Application of Extreme Value Theory for Measuring Financial Risk
Computational Economics
Performance of multithreaded chip multiprocessors and implications for operating system design
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
Thread clustering: sharing-aware scheduling on SMP-CMP-SMT multiprocessors
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
Evaluating the effect of replacing CNK with linux on the compute-nodes of blue gene/l
Proceedings of the 22nd annual international conference on Supercomputing
Analysis and approximation of optimal co-scheduling on chip multiprocessors
Proceedings of the 17th international conference on Parallel architectures and compilation techniques
Per-thread cycle accounting in SMT processors
Proceedings of the 14th international conference on Architectural support for programming languages and operating systems
HASS: a scheduler for heterogeneous multicore systems
ACM SIGOPS Operating Systems Review
Characterizing the resource-sharing levels in the UltraSPARC T2 processor
Proceedings of the 42nd Annual IEEE/ACM International Symposium on Microarchitecture
Thread to Core Assignment in SMT On-Chip Multiprocessors
SBAC-PAD '09 Proceedings of the 2009 21st International Symposium on Computer Architecture and High Performance Computing
Thread to strand binding of parallel network applications in massive multi-threaded systems
Proceedings of the 15th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming
Probabilistic job symbiosis modeling for SMT processor scheduling
Proceedings of the fifteenth edition of ASPLOS on Architectural support for programming languages and operating systems
Exploiting unbalanced thread scheduling for energy and performance on a CMP of SMT processors
IPDPS'06 Proceedings of the 20th international conference on Parallel and distributed processing
Compatible phase co-scheduling on a CMP of multi-threaded processors
IPDPS'06 Proceedings of the 20th international conference on Parallel and distributed processing
Kernel Partitioning of Streaming Applications: A Statistical Approach to an NP-complete Problem
MICRO-45 Proceedings of the 2012 45th Annual IEEE/ACM International Symposium on Microarchitecture
Runtime resource allocation for software pipelines
Proceedings of the 16th International Workshop on Software and Compilers for Embedded Systems
Optimizations for configuring and mapping software pipelines in many core systems
Proceedings of the 50th Annual Design Automation Conference
ACM Transactions on Architecture and Code Optimization (TACO)
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The introduction of massively multithreaded (MMT) processors, comprised of a large number of cores with many shared resources, has made task scheduling, in particular task to hardware thread assignment, one of the most promising ways to improve system performance. However, finding an optimal task assignment for a workload running on MMT processors is an NP-complete problem. Due to the fact that the performance of the best possible task assignment is unknown, the room for improvement of current task-assignment algorithms cannot be determined. This is a major problem for the industry because it could lead to: (1)~A waste of resources if excessive effort is devoted to improving a task assignment algorithm that already provides a performance that is close to the optimal one, or (2)~significant performance loss if insufficient effort is devoted to improving poorly-performing task assignment algorithms. In this paper, we present a method based on Extreme Value Theory that allows the prediction of the performance of the optimal task assignment in MMT processors. We further show that executing a sample of several hundred or several thousand random task assignments is enough to obtain, with very high confidence, an assignment with a performance that is close to the optimal one. We validate our method with an industrial case study for a set of multithreaded network applications running on an UltraSPARC~T2 processor.