An Analyzable Memory Controller for Hard Real-Time CMPs

  • Authors:
  • M. Paolieri;E. Quinones;F. J. Cazorla;M. Valero

  • Affiliations:
  • Barcelona Supercomput. Center, Barcelona, Spain;-;-;-

  • Venue:
  • IEEE Embedded Systems Letters
  • Year:
  • 2009

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Abstract

Multicore processors (CMPs) represent a good solution to provide the performance required by current and future hard real-time systems. However, it is difficult to compute a tight WCET estimation for CMPs due to interferences that tasks suffer when accessing shared hardware resources. We propose an analyzable JEDEC-compliant DDRx SDRAM memory controller (AMC) for hard real-time CMPs, that reduces the impact of memory interferences caused by other tasks on WCET estimation, providing a predictable memory access time and allowing the computation of tight WCET estimations.