Título:
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ITCA: inter-task conflict-aware CPU accounting for CMPs
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Autor/a:
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Luque, Carlos; Moreto Planas, Miquel; Cazorla Almeida, Francisco Javier; Gioiosa, Roberto; Buyuktosunoglu, Alper; Valero Cortés, Mateo
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions |
Abstract:
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Chip-MultiProcessor (CMP) architectures are becoming
more and more popular as an alternative to the
traditional processors that only extract instruction-level parallelism
from an application. CMPs introduce complexities when
accounting CPU utilization. This is due to the fact that the
progress done by an application during an interval of time
highly depends on the activity of the other applications it is
co-scheduled with.
In this paper, we identify how an inaccurate measurement
of the CPU utilization affects several key aspects of the system
like the application scheduling or the charging mechanism in
data centers. We propose a new hardware CPU accounting
mechanism to improve the accuracy when measuring the
CPU utilization in CMPs and compare it with the previous
accounting mechanisms. Our results show that currently known
mechanisms lead to a 19% average error when it comes to CPU
utilization accounting. Our proposal reduces this error to less
than 1% in a modeled 4-core processor system. |
Materia(s):
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-Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors -Multiprocessors -Cache memory -System design -Cycle accounting -Chip-Multiprocessor -Cache partitioning algorithms -Fairness -ATD -Multiprocessadors -Memòria ràpida de treball (Informàtica) -Disseny de sistemes |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Objeto de conferencia |
Editor:
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IEEE Computer Society Publications
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