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  4. Acceleration of Control Intensive Applications on Coarse-Grained Reconfigurable Arrays for Embedded Systems
 
research article

Acceleration of Control Intensive Applications on Coarse-Grained Reconfigurable Arrays for Embedded Systems

Denkinger, Benoît Walter  
•
Peon Quiros, Miguel  
•
Konijnenburg, Mario
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March 17, 2023
Transactions on Computers

Embedded systems confront two opposite goals: low-power operation and high performance. The current trend to reach these goals is toward heterogeneous platforms, including multi-core architectures with heterogeneous cores and hardware accelerators. The latter can be divided into custom accelerators (e.g., ASICs) and programmable domain-specific cores (e.g., DSIPs). VWR2A [1] is a programmable architecture that integrates high computational density and low power memory structures. The flexibility of VWR2A allows a large portion of applications to be covered, resulting in better performance and energy efficiency than ASICs and general-purpose processors. However, while this has been well studied for data-intensive kernels, this is not the case for control-intensive kernels —code with complex if-else and nested loop structures. Traditionally, control-intensive code is left to be executed by the host processor. This situation unnecessarily restricts the potential impact of energy-efficient acceleration, especially at the application level. In this paper, we evaluate the performance and energy consumption of VWR2A for control-intensive code and compare it with an ARM Cortex-M4 processor and a RISC-V Ibex processor. The performance and energy consumption are evaluated at the kernel and application levels. Our results confirm that VWR2A is faster and more energy-efficient than the two considered general-purpose processors also for control-intensive code.

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Type
research article
DOI
10.1109/TC.2023.3257504
Author(s)
Denkinger, Benoît Walter  
Peon Quiros, Miguel  
Konijnenburg, Mario
Atienza Alonso, David  
Catthoor, Francky
Date Issued

2023-03-17

Published in
Transactions on Computers
Volume

14

Issue

8

Start page

1

End page

13

Subjects

programmable cores

•

CGRA

•

reconfigurable architecture

•

accelerators

•

low-power

•

embedded systems

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
ESL  
FunderGrant Number

FNS

200020 182009

Other foundations

REG-19-019

EU funding

25657

Available on Infoscience
March 17, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/196220
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