NEDA: NOP Exploitation with Dependency Awareness for Reliable VLIW Processors - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2017

NEDA: NOP Exploitation with Dependency Awareness for Reliable VLIW Processors

Abstract

Critical applications require reliable processors that combine performance with low cost and energy consumption. Very Long Instruction Word (VLIW) processors have inherent resource redundancy not constantly used due to application's fluctuating Instruction Level Parallelism (ILP). Reliability through idle slots utilization is explored either at compile-time, increasing code size and storage requirements, or at run-time only inside the current instruction bundle, adding unnecessary time slots and degrading performance. To address this issue, we propose a technique to explore the idle slots inside and across original and replicated instruction bundles reclaiming more efficiently the idle slots and creating a compact schedule. To achieve this, a dependency analysis is applied at run-time. The execution of both original and replicated instructions is allowed at any adequate function unit, providing higher flexibility on instruction scheduling. The proposed technique achieves up to 26% reduction in performance degradation over existing approaches.
Fichier principal
Vignette du fichier
NEDA - NOP Exploitation with DependencyAwareness for Reliable VLIW Processors.pdf (1.4 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01633770 , version 1 (14-11-2017)

Identifiers

Cite

Rafail Psiakis, Angeliki Kritikakou, Olivier Sentieys. NEDA: NOP Exploitation with Dependency Awareness for Reliable VLIW Processors. ISVLSI 2017 - IEEE Computer Society Annual Symposium on VLSI, May 2017, Bochum, Germany. pp.391-396, ⟨10.1109/ISVLSI.2017.75⟩. ⟨hal-01633770⟩
507 View
223 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More