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Characterizing the resource-sharing levels of the UltraSparc T2 processor
Cakarevic, Vladimir; Radojkovic, Petar; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo
Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d´Altes Prestacions
Thread level parallelism (TLP) has become a popular trend to improve processor performance, overcoming the limitations of extracting instruction level parallelism. Each TLP paradigm, such as Simultaneous Multithreading or Chip-Multiprocessors, provides di erent bene ts, which has motivated processor vendors to combine several TLP paradigms in each chip design. Even if most of these combined-TLP designs are homogeneous, they present di erent levels of hardware resource sharing, which introduces complexities on the operating system scheduling and load balancing. Commonly, processor designs provide two levels of resource sharing: Inter-core in which only the highest levels of the cache hierarchy are shared, and Intracore in which most of the hardware resources of the core are shared . Recently, Sun Microsystems has released the UltraSPARC T2, a processor with three levels of hardware resource sharing: InterCore, IntraCore, and IntraPipe. In this work, we provide the rst characterization of a three-level resource sharing processor, the UltraSPARC T2, and we show how multi-level resource sharing a ects the operating system design. We further identify the most critical hardware resources in the T2 and the characteristics of applications that are not sensitive to resource sharing. Finally, we present a case study in which we run a real multithreaded network application, showing that a resource sharing aware scheduler can improve the system throughput up to 55%.
Peer Reviewed
Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors::Arquitectures paral·leles
Simultaneous multithreading processors
Sun Nigara T2
UltraSPARC T2
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info:eu-repo/semantics/conferenceObject
Association for Computing Machinery (ACM)
         

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Radojkovic, Petar; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo
Cakarevic, Vladimir; Radojkovic, Petar; Cazorla Almeida, Francisco Javier; Gioiosa, Roberto; Nemirovsky, Mario; Valero Cortés, Mateo; Pajuelo González, Manuel Alejandro; Verdú Mulà, Javier
Radojkovic, Petar; Cakarevic, Vladimir; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Gioiosa, Roberto; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo
Cakarevic, Vladimir; Radojkovic, Petar; Verdú Mulà, Javier; Pajuelo González, Manuel Alejandro; Gioiosa, Roberto; Cazorla Almeida, Francisco Javier; Nemirovsky, Mario; Valero Cortés, Mateo
Cakarevic, Vladimir; Radojkovic, Petar; Verdú Mulà, Javier; Cazorla Almeida, Francisco Javier; Gioiosa, Roberto; Pajuelo González, Manuel Alejandro; Nemirovsky, Mario; Valero Cortés, Mateo